/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-pr-ci_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 08:55:03,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 08:55:03,712 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 08:55:03,716 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 08:55:03,717 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 08:55:03,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 08:55:03,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 08:55:03,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 08:55:03,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 08:55:03,749 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 08:55:03,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 08:55:03,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 08:55:03,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 08:55:03,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 08:55:03,752 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 08:55:03,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 08:55:03,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 08:55:03,753 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 08:55:03,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 08:55:03,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 08:55:03,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 08:55:03,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 08:55:03,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 08:55:03,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 08:55:03,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 08:55:03,756 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 08:55:03,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 08:55:03,756 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 08:55:03,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 08:55:03,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 08:55:03,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 08:55:03,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 08:55:03,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:55:03,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 08:55:03,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 08:55:03,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 08:55:03,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 08:55:03,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 08:55:03,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 08:55:03,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 08:55:03,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 08:55:03,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 08:55:03,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 08:55:03,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 08:55:04,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 08:55:04,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 08:55:04,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 08:55:04,045 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 08:55:04,045 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 08:55:04,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i [2023-12-19 08:55:05,234 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 08:55:05,437 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 08:55:05,438 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i [2023-12-19 08:55:05,461 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c1401e0/6ae7aa89ce3c42ec813e6bd9fca1d1c0/FLAG32070e764 [2023-12-19 08:55:05,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c1401e0/6ae7aa89ce3c42ec813e6bd9fca1d1c0 [2023-12-19 08:55:05,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 08:55:05,482 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 08:55:05,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 08:55:05,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 08:55:05,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 08:55:05,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:05,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6416ff61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05, skipping insertion in model container [2023-12-19 08:55:05,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:05,532 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 08:55:05,692 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-pr-ci_file-34.i[919,932] [2023-12-19 08:55:05,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:55:05,773 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 08:55:05,784 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-pr-ci_file-34.i[919,932] [2023-12-19 08:55:05,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:55:05,838 INFO L206 MainTranslator]: Completed translation [2023-12-19 08:55:05,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05 WrapperNode [2023-12-19 08:55:05,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 08:55:05,841 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 08:55:05,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 08:55:05,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 08:55:05,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:05,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:05,917 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 229 [2023-12-19 08:55:05,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 08:55:05,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 08:55:05,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 08:55:05,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 08:55:05,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:05,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:05,945 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:05,973 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 08:55:05,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:05,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:05,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:05,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:06,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:06,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:06,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 08:55:06,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 08:55:06,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 08:55:06,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 08:55:06,015 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (1/1) ... [2023-12-19 08:55:06,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:55:06,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:06,054 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 08:55:06,079 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 08:55:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 08:55:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 08:55:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 08:55:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 08:55:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 08:55:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 08:55:06,229 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 08:55:06,233 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 08:55:06,671 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 08:55:06,713 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 08:55:06,714 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 08:55:06,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:55:06 BoogieIcfgContainer [2023-12-19 08:55:06,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 08:55:06,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 08:55:06,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 08:55:06,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 08:55:06,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:55:05" (1/3) ... [2023-12-19 08:55:06,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67aa219e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:55:06, skipping insertion in model container [2023-12-19 08:55:06,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:55:05" (2/3) ... [2023-12-19 08:55:06,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67aa219e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:55:06, skipping insertion in model container [2023-12-19 08:55:06,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:55:06" (3/3) ... [2023-12-19 08:55:06,730 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i [2023-12-19 08:55:06,743 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 08:55:06,743 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 08:55:06,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 08:55:06,789 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;@24f7dc92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 08:55:06,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 08:55:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 60 states have (on average 1.6) internal successors, (96), 61 states have internal predecessors, (96), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 08:55:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-19 08:55:06,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:55:06,803 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:06,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:55:06,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:55:06,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1457782391, now seen corresponding path program 1 times [2023-12-19 08:55:06,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:55:06,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939150531] [2023-12-19 08:55:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:06,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:55:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:07,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:55:07,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939150531] [2023-12-19 08:55:07,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 08:55:07,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106621098] [2023-12-19 08:55:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:07,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:55:07,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:07,075 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 08:55:07,104 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 08:55:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:07,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 08:55:07,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:55:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-12-19 08:55:07,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:55:07,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106621098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:55:07,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:55:07,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 08:55:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620897751] [2023-12-19 08:55:07,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:55:07,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 08:55:07,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:55:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 08:55:07,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:55:07,363 INFO L87 Difference]: Start difference. First operand has 83 states, 60 states have (on average 1.6) internal successors, (96), 61 states have internal predecessors, (96), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-19 08:55:07,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:55:07,422 INFO L93 Difference]: Finished difference Result 163 states and 290 transitions. [2023-12-19 08:55:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 08:55:07,426 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 137 [2023-12-19 08:55:07,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:55:07,432 INFO L225 Difference]: With dead ends: 163 [2023-12-19 08:55:07,432 INFO L226 Difference]: Without dead ends: 81 [2023-12-19 08:55:07,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 136 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 08:55:07,437 INFO L413 NwaCegarLoop]: 127 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, 127 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 08:55:07,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:55:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-19 08:55:07,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-12-19 08:55:07,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 59 states have internal predecessors, (90), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 08:55:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 130 transitions. [2023-12-19 08:55:07,478 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 130 transitions. Word has length 137 [2023-12-19 08:55:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:55:07,479 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 130 transitions. [2023-12-19 08:55:07,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-19 08:55:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 130 transitions. [2023-12-19 08:55:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-19 08:55:07,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:55:07,495 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:07,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 08:55:07,704 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 08:55:07,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:55:07,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:55:07,705 INFO L85 PathProgramCache]: Analyzing trace with hash 986317253, now seen corresponding path program 1 times [2023-12-19 08:55:07,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:55:07,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433006445] [2023-12-19 08:55:07,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:07,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:55:07,767 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:55:07,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429613395] [2023-12-19 08:55:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:07,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:55:07,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:07,772 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 08:55:07,776 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 08:55:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:07,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 08:55:07,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:55:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:55:08,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:55:08,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:55:08,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433006445] [2023-12-19 08:55:08,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:55:08,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429613395] [2023-12-19 08:55:08,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429613395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:55:08,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:55:08,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:55:08,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679127733] [2023-12-19 08:55:08,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:55:08,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:55:08,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:55:08,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:55:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:55:08,187 INFO L87 Difference]: Start difference. First operand 81 states and 130 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:55:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:55:08,477 INFO L93 Difference]: Finished difference Result 240 states and 384 transitions. [2023-12-19 08:55:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 08:55:08,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 137 [2023-12-19 08:55:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:55:08,484 INFO L225 Difference]: With dead ends: 240 [2023-12-19 08:55:08,484 INFO L226 Difference]: Without dead ends: 160 [2023-12-19 08:55:08,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 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 08:55:08,487 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 151 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:55:08,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 453 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:55:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-19 08:55:08,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 83. [2023-12-19 08:55:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 61 states have internal predecessors, (92), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 08:55:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 132 transitions. [2023-12-19 08:55:08,513 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 132 transitions. Word has length 137 [2023-12-19 08:55:08,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:55:08,515 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 132 transitions. [2023-12-19 08:55:08,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:55:08,516 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 132 transitions. [2023-12-19 08:55:08,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 08:55:08,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:55:08,517 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:08,524 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 08:55:08,721 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 08:55:08,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:55:08,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:55:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash -40434886, now seen corresponding path program 1 times [2023-12-19 08:55:08,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:55:08,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737739653] [2023-12-19 08:55:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:08,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:55:08,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:55:08,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365726066] [2023-12-19 08:55:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:08,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:55:08,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:08,761 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 08:55:08,784 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 08:55:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:08,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 08:55:08,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:55:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:55:09,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:55:09,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:55:09,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737739653] [2023-12-19 08:55:09,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:55:09,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365726066] [2023-12-19 08:55:09,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365726066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:55:09,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:55:09,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:55:09,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670989210] [2023-12-19 08:55:09,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:55:09,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:55:09,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:55:09,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:55:09,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:55:09,079 INFO L87 Difference]: Start difference. First operand 83 states and 132 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:55:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:55:09,195 INFO L93 Difference]: Finished difference Result 286 states and 456 transitions. [2023-12-19 08:55:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 08:55:09,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 138 [2023-12-19 08:55:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:55:09,201 INFO L225 Difference]: With dead ends: 286 [2023-12-19 08:55:09,201 INFO L226 Difference]: Without dead ends: 204 [2023-12-19 08:55:09,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 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 08:55:09,203 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 149 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:55:09,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 424 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:55:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-19 08:55:09,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 173. [2023-12-19 08:55:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 130 states have (on average 1.523076923076923) internal successors, (198), 130 states have internal predecessors, (198), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-19 08:55:09,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 278 transitions. [2023-12-19 08:55:09,230 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 278 transitions. Word has length 138 [2023-12-19 08:55:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:55:09,230 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 278 transitions. [2023-12-19 08:55:09,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:55:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 278 transitions. [2023-12-19 08:55:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:55:09,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:55:09,232 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:09,244 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 08:55:09,440 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 08:55:09,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:55:09,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:55:09,441 INFO L85 PathProgramCache]: Analyzing trace with hash 677696352, now seen corresponding path program 1 times [2023-12-19 08:55:09,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:55:09,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906436779] [2023-12-19 08:55:09,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:09,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:55:09,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:55:09,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788962686] [2023-12-19 08:55:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:09,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:55:09,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:09,492 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 08:55:09,511 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 08:55:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:09,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 08:55:09,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:55:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 159 proven. 51 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-12-19 08:55:10,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:55:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:55:10,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:55:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906436779] [2023-12-19 08:55:10,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:55:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788962686] [2023-12-19 08:55:10,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788962686] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:55:10,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:55:10,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-12-19 08:55:10,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798657521] [2023-12-19 08:55:10,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:55:10,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 08:55:10,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:55:10,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 08:55:10,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-19 08:55:10,586 INFO L87 Difference]: Start difference. First operand 173 states and 278 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:55:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:55:11,286 INFO L93 Difference]: Finished difference Result 574 states and 906 transitions. [2023-12-19 08:55:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 08:55:11,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2023-12-19 08:55:11,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:55:11,291 INFO L225 Difference]: With dead ends: 574 [2023-12-19 08:55:11,291 INFO L226 Difference]: Without dead ends: 402 [2023-12-19 08:55:11,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:55:11,293 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 321 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:55:11,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 617 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 08:55:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-19 08:55:11,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 285. [2023-12-19 08:55:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 226 states have (on average 1.5575221238938053) internal successors, (352), 228 states have internal predecessors, (352), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 08:55:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 460 transitions. [2023-12-19 08:55:11,333 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 460 transitions. Word has length 139 [2023-12-19 08:55:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:55:11,334 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 460 transitions. [2023-12-19 08:55:11,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:55:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 460 transitions. [2023-12-19 08:55:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:55:11,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:55:11,336 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:11,347 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 08:55:11,544 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 08:55:11,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:55:11,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:55:11,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1995674993, now seen corresponding path program 1 times [2023-12-19 08:55:11,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:55:11,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935975562] [2023-12-19 08:55:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:11,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:55:11,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:55:11,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541062387] [2023-12-19 08:55:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:11,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:55:11,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:11,583 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 08:55:11,601 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 08:55:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:11,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 08:55:11,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:55:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 438 proven. 111 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-12-19 08:55:13,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:55:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 81 proven. 129 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-12-19 08:55:14,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:55:14,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935975562] [2023-12-19 08:55:14,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:55:14,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541062387] [2023-12-19 08:55:14,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541062387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:55:14,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:55:14,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 37 [2023-12-19 08:55:14,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625100178] [2023-12-19 08:55:14,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:55:14,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-19 08:55:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:55:14,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-19 08:55:14,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=924, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 08:55:14,329 INFO L87 Difference]: Start difference. First operand 285 states and 460 transitions. Second operand has 37 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 35 states have internal predecessors, (93), 10 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-19 08:55:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:55:20,530 INFO L93 Difference]: Finished difference Result 1735 states and 2733 transitions. [2023-12-19 08:55:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-19 08:55:20,531 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 35 states have internal predecessors, (93), 10 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 139 [2023-12-19 08:55:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:55:20,540 INFO L225 Difference]: With dead ends: 1735 [2023-12-19 08:55:20,540 INFO L226 Difference]: Without dead ends: 1451 [2023-12-19 08:55:20,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4967 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3706, Invalid=7214, Unknown=0, NotChecked=0, Total=10920 [2023-12-19 08:55:20,545 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 2709 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 08:55:20,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 1578 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 08:55:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2023-12-19 08:55:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 817. [2023-12-19 08:55:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 661 states have (on average 1.5431164901664145) internal successors, (1020), 667 states have internal predecessors, (1020), 134 states have call successors, (134), 21 states have call predecessors, (134), 21 states have return successors, (134), 128 states have call predecessors, (134), 134 states have call successors, (134) [2023-12-19 08:55:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1288 transitions. [2023-12-19 08:55:20,624 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1288 transitions. Word has length 139 [2023-12-19 08:55:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:55:20,624 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1288 transitions. [2023-12-19 08:55:20,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 35 states have internal predecessors, (93), 10 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-19 08:55:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1288 transitions. [2023-12-19 08:55:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:55:20,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:55:20,627 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:20,634 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 08:55:20,834 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 08:55:20,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:55:20,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:55:20,836 INFO L85 PathProgramCache]: Analyzing trace with hash 811709858, now seen corresponding path program 1 times [2023-12-19 08:55:20,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:55:20,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107504711] [2023-12-19 08:55:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:20,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:55:20,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:55:20,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471460166] [2023-12-19 08:55:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:20,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:55:20,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:20,882 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 08:55:20,885 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 08:55:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:21,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 08:55:21,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:55:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 393 proven. 24 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-12-19 08:55:21,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:55:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-19 08:55:21,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:55:21,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107504711] [2023-12-19 08:55:21,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:55:21,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471460166] [2023-12-19 08:55:21,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471460166] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:55:21,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:55:21,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 08:55:21,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47176831] [2023-12-19 08:55:21,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:55:21,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 08:55:21,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:55:21,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 08:55:21,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 08:55:21,244 INFO L87 Difference]: Start difference. First operand 817 states and 1288 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 08:55:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:55:21,654 INFO L93 Difference]: Finished difference Result 1182 states and 1828 transitions. [2023-12-19 08:55:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 08:55:21,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 139 [2023-12-19 08:55:21,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:55:21,659 INFO L225 Difference]: With dead ends: 1182 [2023-12-19 08:55:21,659 INFO L226 Difference]: Without dead ends: 765 [2023-12-19 08:55:21,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 269 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 08:55:21,661 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 241 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:55:21,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 555 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 08:55:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2023-12-19 08:55:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 733. [2023-12-19 08:55:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 578 states have (on average 1.4844290657439447) internal successors, (858), 583 states have internal predecessors, (858), 129 states have call successors, (129), 25 states have call predecessors, (129), 25 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-19 08:55:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1116 transitions. [2023-12-19 08:55:21,733 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1116 transitions. Word has length 139 [2023-12-19 08:55:21,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:55:21,734 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1116 transitions. [2023-12-19 08:55:21,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-19 08:55:21,734 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1116 transitions. [2023-12-19 08:55:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:55:21,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:55:21,736 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:21,748 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 08:55:21,943 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 08:55:21,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:55:21,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:55:21,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1234411684, now seen corresponding path program 1 times [2023-12-19 08:55:21,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:55:21,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305575249] [2023-12-19 08:55:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:21,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:55:21,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:55:21,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127612903] [2023-12-19 08:55:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:21,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:55:21,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:21,986 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 08:55:22,005 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 08:55:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:22,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 08:55:22,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:55:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 460 proven. 129 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-19 08:55:23,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:55:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 66 proven. 96 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-19 08:55:25,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:55:25,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305575249] [2023-12-19 08:55:25,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:55:25,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127612903] [2023-12-19 08:55:25,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127612903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:55:25,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:55:25,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 33 [2023-12-19 08:55:25,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007001316] [2023-12-19 08:55:25,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:55:25,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 08:55:25,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:55:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 08:55:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 08:55:25,021 INFO L87 Difference]: Start difference. First operand 733 states and 1116 transitions. Second operand has 33 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 10 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-19 08:55:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:55:30,333 INFO L93 Difference]: Finished difference Result 2760 states and 4201 transitions. [2023-12-19 08:55:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-19 08:55:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 10 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 139 [2023-12-19 08:55:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:55:30,345 INFO L225 Difference]: With dead ends: 2760 [2023-12-19 08:55:30,345 INFO L226 Difference]: Without dead ends: 2087 [2023-12-19 08:55:30,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1544, Invalid=5428, Unknown=0, NotChecked=0, Total=6972 [2023-12-19 08:55:30,351 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1741 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 4129 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 4562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 4129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:55:30,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 2327 Invalid, 4562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 4129 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 08:55:30,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2023-12-19 08:55:30,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 1187. [2023-12-19 08:55:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 960 states have (on average 1.4854166666666666) internal successors, (1426), 965 states have internal predecessors, (1426), 189 states have call successors, (189), 37 states have call predecessors, (189), 37 states have return successors, (189), 184 states have call predecessors, (189), 189 states have call successors, (189) [2023-12-19 08:55:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1804 transitions. [2023-12-19 08:55:30,515 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1804 transitions. Word has length 139 [2023-12-19 08:55:30,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:55:30,516 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1804 transitions. [2023-12-19 08:55:30,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 10 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-19 08:55:30,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1804 transitions. [2023-12-19 08:55:30,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:55:30,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:55:30,518 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:30,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 08:55:30,725 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 08:55:30,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:55:30,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:55:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1453266402, now seen corresponding path program 1 times [2023-12-19 08:55:30,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:55:30,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745980933] [2023-12-19 08:55:30,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:30,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:55:30,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:55:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913646696] [2023-12-19 08:55:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:30,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:55:30,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:30,768 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 08:55:30,800 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 08:55:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:31,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 08:55:31,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:55:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:55:33,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:55:33,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:55:33,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745980933] [2023-12-19 08:55:33,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:55:33,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913646696] [2023-12-19 08:55:33,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913646696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:55:33,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:55:33,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 08:55:33,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729618072] [2023-12-19 08:55:33,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:55:33,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 08:55:33,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:55:33,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 08:55:33,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 08:55:33,561 INFO L87 Difference]: Start difference. First operand 1187 states and 1804 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:55:35,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:55:35,294 INFO L93 Difference]: Finished difference Result 2333 states and 3556 transitions. [2023-12-19 08:55:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 08:55:35,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2023-12-19 08:55:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:55:35,305 INFO L225 Difference]: With dead ends: 2333 [2023-12-19 08:55:35,305 INFO L226 Difference]: Without dead ends: 1843 [2023-12-19 08:55:35,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-12-19 08:55:35,308 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 562 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:55:35,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 877 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 08:55:35,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-19 08:55:35,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1765. [2023-12-19 08:55:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1426 states have (on average 1.490883590462833) internal successors, (2126), 1434 states have internal predecessors, (2126), 284 states have call successors, (284), 54 states have call predecessors, (284), 54 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-19 08:55:35,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2694 transitions. [2023-12-19 08:55:35,471 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2694 transitions. Word has length 139 [2023-12-19 08:55:35,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:55:35,472 INFO L495 AbstractCegarLoop]: Abstraction has 1765 states and 2694 transitions. [2023-12-19 08:55:35,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:55:35,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2694 transitions. [2023-12-19 08:55:35,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:55:35,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:55:35,474 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:35,485 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 08:55:35,682 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 08:55:35,683 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:55:35,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:55:35,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1510524704, now seen corresponding path program 1 times [2023-12-19 08:55:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:55:35,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889079257] [2023-12-19 08:55:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:55:35,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:55:35,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206556228] [2023-12-19 08:55:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:35,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:55:35,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:35,717 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 08:55:35,724 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 08:55:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:35,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:55:35,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:55:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:55:40,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:55:40,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:55:40,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889079257] [2023-12-19 08:55:40,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:55:40,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206556228] [2023-12-19 08:55:40,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206556228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:55:40,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:55:40,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:55:40,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24566580] [2023-12-19 08:55:40,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:55:40,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:55:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:55:40,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:55:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:55:40,239 INFO L87 Difference]: Start difference. First operand 1765 states and 2694 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:55:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:55:45,673 INFO L93 Difference]: Finished difference Result 2581 states and 3938 transitions. [2023-12-19 08:55:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:55:45,674 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2023-12-19 08:55:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:55:45,683 INFO L225 Difference]: With dead ends: 2581 [2023-12-19 08:55:45,683 INFO L226 Difference]: Without dead ends: 1843 [2023-12-19 08:55:45,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:55:45,689 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 475 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:55:45,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 922 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 08:55:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-19 08:55:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1772. [2023-12-19 08:55:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1433 states have (on average 1.490579204466155) internal successors, (2136), 1441 states have internal predecessors, (2136), 284 states have call successors, (284), 54 states have call predecessors, (284), 54 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-19 08:55:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2704 transitions. [2023-12-19 08:55:45,943 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2704 transitions. Word has length 139 [2023-12-19 08:55:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:55:45,943 INFO L495 AbstractCegarLoop]: Abstraction has 1772 states and 2704 transitions. [2023-12-19 08:55:45,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:55:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2704 transitions. [2023-12-19 08:55:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:55:45,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:55:45,946 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:45,959 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 08:55:46,154 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 08:55:46,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:55:46,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:55:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash 643919776, now seen corresponding path program 1 times [2023-12-19 08:55:46,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:55:46,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136682349] [2023-12-19 08:55:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:46,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:55:46,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:55:46,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810846351] [2023-12-19 08:55:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:55:46,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:55:46,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:55:46,193 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 08:55:46,216 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 08:55:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:55:46,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 08:55:46,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:55:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 159 proven. 51 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-12-19 08:55:47,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:56:05,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:56:05,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136682349] [2023-12-19 08:56:05,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:56:05,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810846351] [2023-12-19 08:56:05,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810846351] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 08:56:05,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:56:05,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-19 08:56:05,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294424209] [2023-12-19 08:56:05,873 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 08:56:05,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 08:56:05,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:56:05,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 08:56:05,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=347, Unknown=2, NotChecked=0, Total=420 [2023-12-19 08:56:05,874 INFO L87 Difference]: Start difference. First operand 1772 states and 2704 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-19 08:56:08,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:56:08,974 INFO L93 Difference]: Finished difference Result 3258 states and 5012 transitions. [2023-12-19 08:56:08,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 08:56:08,975 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 139 [2023-12-19 08:56:08,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:56:08,981 INFO L225 Difference]: With dead ends: 3258 [2023-12-19 08:56:08,982 INFO L226 Difference]: Without dead ends: 1909 [2023-12-19 08:56:08,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=304, Invalid=1176, Unknown=2, NotChecked=0, Total=1482 [2023-12-19 08:56:08,986 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 358 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:56:08,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 655 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 08:56:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2023-12-19 08:56:09,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1831. [2023-12-19 08:56:09,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1492 states have (on average 1.4919571045576407) internal successors, (2226), 1500 states have internal predecessors, (2226), 284 states have call successors, (284), 54 states have call predecessors, (284), 54 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-19 08:56:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2794 transitions. [2023-12-19 08:56:09,219 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2794 transitions. Word has length 139 [2023-12-19 08:56:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:56:09,220 INFO L495 AbstractCegarLoop]: Abstraction has 1831 states and 2794 transitions. [2023-12-19 08:56:09,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-19 08:56:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2794 transitions. [2023-12-19 08:56:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:56:09,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:56:09,223 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:09,233 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 08:56:09,430 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 08:56:09,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:56:09,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:56:09,431 INFO L85 PathProgramCache]: Analyzing trace with hash 701178078, now seen corresponding path program 1 times [2023-12-19 08:56:09,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:56:09,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951259811] [2023-12-19 08:56:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:56:09,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:56:09,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:56:09,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951922959] [2023-12-19 08:56:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:56:09,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:56:09,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:56:09,452 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 08:56:09,454 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 08:56:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:56:09,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:56:09,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:56:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:56:14,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:56:14,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:56:14,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951259811] [2023-12-19 08:56:14,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:56:14,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951922959] [2023-12-19 08:56:14,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951922959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:56:14,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:56:14,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:56:14,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810739271] [2023-12-19 08:56:14,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:56:14,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:56:14,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:56:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:56:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:56:14,638 INFO L87 Difference]: Start difference. First operand 1831 states and 2794 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:56:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:56:22,138 INFO L93 Difference]: Finished difference Result 2659 states and 4056 transitions. [2023-12-19 08:56:22,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:56:22,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2023-12-19 08:56:22,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:56:22,145 INFO L225 Difference]: With dead ends: 2659 [2023-12-19 08:56:22,145 INFO L226 Difference]: Without dead ends: 1914 [2023-12-19 08:56:22,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:56:22,148 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 344 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:56:22,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1027 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 08:56:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2023-12-19 08:56:22,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1829. [2023-12-19 08:56:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1490 states have (on average 1.4919463087248321) internal successors, (2223), 1498 states have internal predecessors, (2223), 284 states have call successors, (284), 54 states have call predecessors, (284), 54 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-19 08:56:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2791 transitions. [2023-12-19 08:56:22,340 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2791 transitions. Word has length 139 [2023-12-19 08:56:22,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:56:22,341 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2791 transitions. [2023-12-19 08:56:22,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:56:22,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2791 transitions. [2023-12-19 08:56:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:56:22,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:56:22,342 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:22,351 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 08:56:22,551 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 08:56:22,552 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:56:22,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:56:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1220104943, now seen corresponding path program 1 times [2023-12-19 08:56:22,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:56:22,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115179326] [2023-12-19 08:56:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:56:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:56:22,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:56:22,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311215722] [2023-12-19 08:56:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:56:22,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:56:22,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:56:22,590 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 08:56:22,609 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 08:56:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:56:23,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 08:56:23,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:56:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 408 proven. 81 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-19 08:56:24,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:56:29,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:56:29,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115179326] [2023-12-19 08:56:29,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:56:29,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311215722] [2023-12-19 08:56:29,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311215722] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 08:56:29,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:56:29,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-19 08:56:29,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649960924] [2023-12-19 08:56:29,870 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 08:56:29,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 08:56:29,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:56:29,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 08:56:29,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2023-12-19 08:56:29,871 INFO L87 Difference]: Start difference. First operand 1829 states and 2791 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 3 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-19 08:56:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:56:31,282 INFO L93 Difference]: Finished difference Result 3387 states and 5184 transitions. [2023-12-19 08:56:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 08:56:31,283 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 3 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 139 [2023-12-19 08:56:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:56:31,289 INFO L225 Difference]: With dead ends: 3387 [2023-12-19 08:56:31,289 INFO L226 Difference]: Without dead ends: 2010 [2023-12-19 08:56:31,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 08:56:31,293 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 362 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:56:31,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 629 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 08:56:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2023-12-19 08:56:31,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1888. [2023-12-19 08:56:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1549 states have (on average 1.4887023886378308) internal successors, (2306), 1557 states have internal predecessors, (2306), 284 states have call successors, (284), 54 states have call predecessors, (284), 54 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-19 08:56:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2874 transitions. [2023-12-19 08:56:31,474 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2874 transitions. Word has length 139 [2023-12-19 08:56:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:56:31,474 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 2874 transitions. [2023-12-19 08:56:31,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 3 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-19 08:56:31,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2874 transitions. [2023-12-19 08:56:31,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:56:31,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:56:31,476 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:31,484 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 08:56:31,683 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 08:56:31,683 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:56:31,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:56:31,684 INFO L85 PathProgramCache]: Analyzing trace with hash 173402724, now seen corresponding path program 1 times [2023-12-19 08:56:31,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:56:31,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758273325] [2023-12-19 08:56:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:56:31,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:56:31,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:56:31,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115704190] [2023-12-19 08:56:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:56:31,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:56:31,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:56:31,706 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 08:56:31,724 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 08:56:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:56:32,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 08:56:32,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:56:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:56:32,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:56:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:56:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758273325] [2023-12-19 08:56:32,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:56:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115704190] [2023-12-19 08:56:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115704190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:56:32,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:56:32,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:56:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427468606] [2023-12-19 08:56:32,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:56:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:56:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:56:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:56:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:56:32,260 INFO L87 Difference]: Start difference. First operand 1888 states and 2874 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:56:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:56:32,555 INFO L93 Difference]: Finished difference Result 3267 states and 5020 transitions. [2023-12-19 08:56:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 08:56:32,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2023-12-19 08:56:32,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:56:32,563 INFO L225 Difference]: With dead ends: 3267 [2023-12-19 08:56:32,563 INFO L226 Difference]: Without dead ends: 1636 [2023-12-19 08:56:32,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 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 08:56:32,568 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 80 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:56:32,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 367 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:56:32,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-12-19 08:56:32,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1606. [2023-12-19 08:56:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1329 states have (on average 1.5063957863054929) internal successors, (2002), 1335 states have internal predecessors, (2002), 234 states have call successors, (234), 42 states have call predecessors, (234), 42 states have return successors, (234), 228 states have call predecessors, (234), 234 states have call successors, (234) [2023-12-19 08:56:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2470 transitions. [2023-12-19 08:56:32,724 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2470 transitions. Word has length 139 [2023-12-19 08:56:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:56:32,725 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2470 transitions. [2023-12-19 08:56:32,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:56:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2470 transitions. [2023-12-19 08:56:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:56:32,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:56:32,727 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:32,736 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 08:56:32,934 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 08:56:32,934 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:56:32,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:56:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash -774873758, now seen corresponding path program 1 times [2023-12-19 08:56:32,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:56:32,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268795741] [2023-12-19 08:56:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:56:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:56:32,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:56:32,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712853745] [2023-12-19 08:56:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:56:32,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:56:32,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:56:32,965 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 08:56:32,966 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 08:56:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:56:33,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 08:56:33,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:56:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 402 proven. 108 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-19 08:56:37,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:56:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:56:50,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:56:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268795741] [2023-12-19 08:56:50,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:56:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712853745] [2023-12-19 08:56:50,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712853745] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:56:50,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:56:50,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2023-12-19 08:56:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362679743] [2023-12-19 08:56:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:56:50,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 08:56:50,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:56:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 08:56:50,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=520, Unknown=1, NotChecked=0, Total=650 [2023-12-19 08:56:50,727 INFO L87 Difference]: Start difference. First operand 1606 states and 2470 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:01,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:01,523 INFO L93 Difference]: Finished difference Result 3405 states and 5214 transitions. [2023-12-19 08:57:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 08:57:01,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2023-12-19 08:57:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:01,532 INFO L225 Difference]: With dead ends: 3405 [2023-12-19 08:57:01,532 INFO L226 Difference]: Without dead ends: 2056 [2023-12-19 08:57:01,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=203, Invalid=918, Unknown=1, NotChecked=0, Total=1122 [2023-12-19 08:57:01,536 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 340 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:01,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 555 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-19 08:57:01,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2023-12-19 08:57:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1481. [2023-12-19 08:57:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1215 states have (on average 1.4641975308641975) internal successors, (1779), 1217 states have internal predecessors, (1779), 214 states have call successors, (214), 51 states have call predecessors, (214), 51 states have return successors, (214), 212 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-19 08:57:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2207 transitions. [2023-12-19 08:57:01,674 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2207 transitions. Word has length 139 [2023-12-19 08:57:01,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:01,675 INFO L495 AbstractCegarLoop]: Abstraction has 1481 states and 2207 transitions. [2023-12-19 08:57:01,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2207 transitions. [2023-12-19 08:57:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:57:01,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:01,676 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:01,683 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 08:57:01,877 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 08:57:01,878 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:01,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:01,878 INFO L85 PathProgramCache]: Analyzing trace with hash -717615456, now seen corresponding path program 1 times [2023-12-19 08:57:01,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:01,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732533622] [2023-12-19 08:57:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:01,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:01,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:01,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996092959] [2023-12-19 08:57:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:01,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:01,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:01,894 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 08:57:01,896 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 08:57:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:02,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:57:02,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:57:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:57:06,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:57:06,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:57:06,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732533622] [2023-12-19 08:57:06,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:57:06,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996092959] [2023-12-19 08:57:06,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996092959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:57:06,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:57:06,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:57:06,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274651360] [2023-12-19 08:57:06,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:57:06,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:57:06,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:57:06,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:57:06,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:57:06,253 INFO L87 Difference]: Start difference. First operand 1481 states and 2207 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:11,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:11,674 INFO L93 Difference]: Finished difference Result 2786 states and 4178 transitions. [2023-12-19 08:57:11,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:57:11,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2023-12-19 08:57:11,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:11,682 INFO L225 Difference]: With dead ends: 2786 [2023-12-19 08:57:11,682 INFO L226 Difference]: Without dead ends: 1582 [2023-12-19 08:57:11,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:57:11,685 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 386 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:11,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 730 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 08:57:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2023-12-19 08:57:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1484. [2023-12-19 08:57:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1218 states have (on average 1.4638752052545156) internal successors, (1783), 1220 states have internal predecessors, (1783), 214 states have call successors, (214), 51 states have call predecessors, (214), 51 states have return successors, (214), 212 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-19 08:57:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 2211 transitions. [2023-12-19 08:57:11,811 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 2211 transitions. Word has length 139 [2023-12-19 08:57:11,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:11,812 INFO L495 AbstractCegarLoop]: Abstraction has 1484 states and 2211 transitions. [2023-12-19 08:57:11,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:11,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 2211 transitions. [2023-12-19 08:57:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 08:57:11,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:11,813 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:11,820 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 08:57:12,015 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 08:57:12,015 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:12,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1526962082, now seen corresponding path program 1 times [2023-12-19 08:57:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931482207] [2023-12-19 08:57:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:12,044 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582914557] [2023-12-19 08:57:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:12,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:12,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:12,046 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 08:57:12,058 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 08:57:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:12,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:57:12,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:57:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:57:17,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:57:17,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:57:17,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931482207] [2023-12-19 08:57:17,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:57:17,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582914557] [2023-12-19 08:57:17,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582914557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:57:17,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:57:17,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:57:17,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170940428] [2023-12-19 08:57:17,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:57:17,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:57:17,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:57:17,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:57:17,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:57:17,756 INFO L87 Difference]: Start difference. First operand 1484 states and 2211 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:23,594 INFO L93 Difference]: Finished difference Result 2784 states and 4174 transitions. [2023-12-19 08:57:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:57:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2023-12-19 08:57:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:23,599 INFO L225 Difference]: With dead ends: 2784 [2023-12-19 08:57:23,600 INFO L226 Difference]: Without dead ends: 1573 [2023-12-19 08:57:23,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:57:23,603 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 291 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:23,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 867 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 08:57:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-12-19 08:57:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1482. [2023-12-19 08:57:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1216 states have (on average 1.4638157894736843) internal successors, (1780), 1218 states have internal predecessors, (1780), 214 states have call successors, (214), 51 states have call predecessors, (214), 51 states have return successors, (214), 212 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-19 08:57:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2208 transitions. [2023-12-19 08:57:23,779 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2208 transitions. Word has length 139 [2023-12-19 08:57:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:23,780 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 2208 transitions. [2023-12-19 08:57:23,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2208 transitions. [2023-12-19 08:57:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 08:57:23,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:23,781 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:23,792 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 08:57:23,988 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 08:57:23,988 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:23,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:23,988 INFO L85 PathProgramCache]: Analyzing trace with hash 692343688, now seen corresponding path program 1 times [2023-12-19 08:57:23,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:23,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631114644] [2023-12-19 08:57:23,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:23,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:24,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:24,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367121013] [2023-12-19 08:57:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:24,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:24,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:24,010 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 08:57:24,021 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 08:57:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:24,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 08:57:24,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:57:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:57:25,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:57:25,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:57:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631114644] [2023-12-19 08:57:25,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:57:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367121013] [2023-12-19 08:57:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367121013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:57:25,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:57:25,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 08:57:25,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111241621] [2023-12-19 08:57:25,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:57:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 08:57:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:57:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 08:57:25,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 08:57:25,619 INFO L87 Difference]: Start difference. First operand 1482 states and 2208 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:26,503 INFO L93 Difference]: Finished difference Result 2094 states and 3104 transitions. [2023-12-19 08:57:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:57:26,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2023-12-19 08:57:26,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:26,511 INFO L225 Difference]: With dead ends: 2094 [2023-12-19 08:57:26,512 INFO L226 Difference]: Without dead ends: 1624 [2023-12-19 08:57:26,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 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 08:57:26,514 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 229 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:26,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 727 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 08:57:26,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2023-12-19 08:57:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1482. [2023-12-19 08:57:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1216 states have (on average 1.4638157894736843) internal successors, (1780), 1218 states have internal predecessors, (1780), 214 states have call successors, (214), 51 states have call predecessors, (214), 51 states have return successors, (214), 212 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-19 08:57:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2208 transitions. [2023-12-19 08:57:26,666 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2208 transitions. Word has length 140 [2023-12-19 08:57:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:26,666 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 2208 transitions. [2023-12-19 08:57:26,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2208 transitions. [2023-12-19 08:57:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 08:57:26,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:26,668 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:26,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-19 08:57:26,879 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 08:57:26,879 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:26,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash 749601990, now seen corresponding path program 1 times [2023-12-19 08:57:26,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:26,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076406631] [2023-12-19 08:57:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:26,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:26,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:26,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404983413] [2023-12-19 08:57:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:26,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:26,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:26,900 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 08:57:26,920 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 08:57:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:27,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 08:57:27,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:57:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:57:28,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:57:28,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:57:28,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076406631] [2023-12-19 08:57:28,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:57:28,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404983413] [2023-12-19 08:57:28,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404983413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:57:28,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:57:28,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:57:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277884520] [2023-12-19 08:57:28,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:57:28,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:57:28,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:57:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:57:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:57:28,262 INFO L87 Difference]: Start difference. First operand 1482 states and 2208 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:29,907 INFO L93 Difference]: Finished difference Result 2641 states and 3921 transitions. [2023-12-19 08:57:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 08:57:29,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2023-12-19 08:57:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:29,917 INFO L225 Difference]: With dead ends: 2641 [2023-12-19 08:57:29,917 INFO L226 Difference]: Without dead ends: 2145 [2023-12-19 08:57:29,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 08:57:29,920 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 530 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:29,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1080 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 08:57:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2023-12-19 08:57:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 1907. [2023-12-19 08:57:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1559 states have (on average 1.4611930724823605) internal successors, (2278), 1562 states have internal predecessors, (2278), 281 states have call successors, (281), 66 states have call predecessors, (281), 66 states have return successors, (281), 278 states have call predecessors, (281), 281 states have call successors, (281) [2023-12-19 08:57:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2840 transitions. [2023-12-19 08:57:30,093 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2840 transitions. Word has length 140 [2023-12-19 08:57:30,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:30,094 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2840 transitions. [2023-12-19 08:57:30,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2840 transitions. [2023-12-19 08:57:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 08:57:30,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:30,095 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:30,102 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 08:57:30,302 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 08:57:30,302 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:30,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash 339475464, now seen corresponding path program 1 times [2023-12-19 08:57:30,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:30,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136490076] [2023-12-19 08:57:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:30,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:30,317 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:30,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410347527] [2023-12-19 08:57:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:30,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:30,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:30,319 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 08:57:30,346 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 08:57:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:30,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 08:57:30,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:57:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:57:31,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:57:31,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:57:31,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136490076] [2023-12-19 08:57:31,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:57:31,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410347527] [2023-12-19 08:57:31,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410347527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:57:31,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:57:31,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 08:57:31,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048673323] [2023-12-19 08:57:31,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:57:31,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 08:57:31,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:57:31,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 08:57:31,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 08:57:31,516 INFO L87 Difference]: Start difference. First operand 1907 states and 2840 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:32,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:32,495 INFO L93 Difference]: Finished difference Result 2905 states and 4342 transitions. [2023-12-19 08:57:32,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:57:32,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2023-12-19 08:57:32,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:32,502 INFO L225 Difference]: With dead ends: 2905 [2023-12-19 08:57:32,502 INFO L226 Difference]: Without dead ends: 2070 [2023-12-19 08:57:32,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 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 08:57:32,505 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 197 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:32,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 581 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 08:57:32,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2023-12-19 08:57:32,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1907. [2023-12-19 08:57:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1559 states have (on average 1.4611930724823605) internal successors, (2278), 1562 states have internal predecessors, (2278), 281 states have call successors, (281), 66 states have call predecessors, (281), 66 states have return successors, (281), 278 states have call predecessors, (281), 281 states have call successors, (281) [2023-12-19 08:57:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2840 transitions. [2023-12-19 08:57:32,650 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2840 transitions. Word has length 140 [2023-12-19 08:57:32,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:32,651 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2840 transitions. [2023-12-19 08:57:32,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:32,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2840 transitions. [2023-12-19 08:57:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 08:57:32,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:32,652 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:32,658 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 08:57:32,858 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 08:57:32,859 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:32,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:32,859 INFO L85 PathProgramCache]: Analyzing trace with hash 396733766, now seen corresponding path program 1 times [2023-12-19 08:57:32,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:32,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566084575] [2023-12-19 08:57:32,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:32,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:32,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218975027] [2023-12-19 08:57:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:32,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:32,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:32,878 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 08:57:32,908 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 08:57:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:33,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 08:57:33,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:57:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:57:34,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:57:34,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:57:34,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566084575] [2023-12-19 08:57:34,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:57:34,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218975027] [2023-12-19 08:57:34,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218975027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:57:34,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:57:34,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:57:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830572188] [2023-12-19 08:57:34,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:57:34,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:57:34,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:57:34,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:57:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:57:34,285 INFO L87 Difference]: Start difference. First operand 1907 states and 2840 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:35,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:35,756 INFO L93 Difference]: Finished difference Result 3776 states and 5657 transitions. [2023-12-19 08:57:35,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 08:57:35,756 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2023-12-19 08:57:35,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:35,765 INFO L225 Difference]: With dead ends: 3776 [2023-12-19 08:57:35,765 INFO L226 Difference]: Without dead ends: 2915 [2023-12-19 08:57:35,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 08:57:35,769 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 510 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:35,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 881 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 08:57:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2023-12-19 08:57:35,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2248. [2023-12-19 08:57:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1845 states have (on average 1.4617886178861788) internal successors, (2697), 1849 states have internal predecessors, (2697), 328 states have call successors, (328), 74 states have call predecessors, (328), 74 states have return successors, (328), 324 states have call predecessors, (328), 328 states have call successors, (328) [2023-12-19 08:57:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 3353 transitions. [2023-12-19 08:57:35,975 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 3353 transitions. Word has length 140 [2023-12-19 08:57:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:35,975 INFO L495 AbstractCegarLoop]: Abstraction has 2248 states and 3353 transitions. [2023-12-19 08:57:35,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 3353 transitions. [2023-12-19 08:57:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 08:57:35,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:35,977 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:35,985 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 08:57:36,185 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 08:57:36,186 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:36,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:36,186 INFO L85 PathProgramCache]: Analyzing trace with hash -506422507, now seen corresponding path program 1 times [2023-12-19 08:57:36,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:36,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777383387] [2023-12-19 08:57:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:36,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:36,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:36,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61211117] [2023-12-19 08:57:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:36,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:36,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:36,202 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 08:57:36,208 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 08:57:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:36,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 08:57:36,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:57:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-19 08:57:36,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:57:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-19 08:57:36,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:57:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777383387] [2023-12-19 08:57:36,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:57:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61211117] [2023-12-19 08:57:36,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61211117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:57:36,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:57:36,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 08:57:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975302939] [2023-12-19 08:57:36,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:57:36,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 08:57:36,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:57:36,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 08:57:36,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 08:57:36,730 INFO L87 Difference]: Start difference. First operand 2248 states and 3353 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-19 08:57:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:39,278 INFO L93 Difference]: Finished difference Result 9471 states and 13793 transitions. [2023-12-19 08:57:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-19 08:57:39,278 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 141 [2023-12-19 08:57:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:39,297 INFO L225 Difference]: With dead ends: 9471 [2023-12-19 08:57:39,298 INFO L226 Difference]: Without dead ends: 7850 [2023-12-19 08:57:39,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=879, Invalid=3281, Unknown=0, NotChecked=0, Total=4160 [2023-12-19 08:57:39,303 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1951 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:39,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1963 Valid, 1722 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 08:57:39,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7850 states. [2023-12-19 08:57:39,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7850 to 3815. [2023-12-19 08:57:39,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3815 states, 3056 states have (on average 1.430955497382199) internal successors, (4373), 3074 states have internal predecessors, (4373), 606 states have call successors, (606), 152 states have call predecessors, (606), 152 states have return successors, (606), 588 states have call predecessors, (606), 606 states have call successors, (606) [2023-12-19 08:57:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 5585 transitions. [2023-12-19 08:57:39,759 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 5585 transitions. Word has length 141 [2023-12-19 08:57:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:39,759 INFO L495 AbstractCegarLoop]: Abstraction has 3815 states and 5585 transitions. [2023-12-19 08:57:39,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-19 08:57:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 5585 transitions. [2023-12-19 08:57:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 08:57:39,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:39,761 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:39,771 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 08:57:39,968 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 08:57:39,969 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:39,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:39,969 INFO L85 PathProgramCache]: Analyzing trace with hash -432629745, now seen corresponding path program 1 times [2023-12-19 08:57:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:39,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137952632] [2023-12-19 08:57:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:39,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:39,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204266964] [2023-12-19 08:57:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:39,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:39,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:39,990 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 08:57:39,991 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 08:57:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:40,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:57:40,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:57:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:57:44,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:57:44,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:57:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137952632] [2023-12-19 08:57:44,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:57:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204266964] [2023-12-19 08:57:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204266964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:57:44,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:57:44,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:57:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991264764] [2023-12-19 08:57:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:57:44,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:57:44,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:57:44,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:57:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:57:44,128 INFO L87 Difference]: Start difference. First operand 3815 states and 5585 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:52,459 INFO L93 Difference]: Finished difference Result 6172 states and 8998 transitions. [2023-12-19 08:57:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 08:57:52,462 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2023-12-19 08:57:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:52,476 INFO L225 Difference]: With dead ends: 6172 [2023-12-19 08:57:52,476 INFO L226 Difference]: Without dead ends: 4475 [2023-12-19 08:57:52,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 08:57:52,483 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 683 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:52,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1111 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 08:57:52,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2023-12-19 08:57:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 3858. [2023-12-19 08:57:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3099 states have (on average 1.4317521781219749) internal successors, (4437), 3117 states have internal predecessors, (4437), 606 states have call successors, (606), 152 states have call predecessors, (606), 152 states have return successors, (606), 588 states have call predecessors, (606), 606 states have call successors, (606) [2023-12-19 08:57:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5649 transitions. [2023-12-19 08:57:52,929 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5649 transitions. Word has length 141 [2023-12-19 08:57:52,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:52,929 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 5649 transitions. [2023-12-19 08:57:52,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5649 transitions. [2023-12-19 08:57:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 08:57:52,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:52,931 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:52,938 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 08:57:53,136 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 08:57:53,137 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:53,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:53,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1299234673, now seen corresponding path program 1 times [2023-12-19 08:57:53,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:53,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246605954] [2023-12-19 08:57:53,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:53,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:53,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:53,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593932754] [2023-12-19 08:57:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:53,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:53,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:53,159 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 08:57:53,180 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 08:57:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:53,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 08:57:53,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:57:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 387 proven. 33 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-19 08:57:54,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:57:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-19 08:57:54,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:57:54,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246605954] [2023-12-19 08:57:54,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:57:54,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593932754] [2023-12-19 08:57:54,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593932754] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:57:54,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:57:54,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-19 08:57:54,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107198968] [2023-12-19 08:57:54,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:57:54,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 08:57:54,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:57:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 08:57:54,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-12-19 08:57:54,344 INFO L87 Difference]: Start difference. First operand 3858 states and 5649 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-19 08:57:56,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:56,233 INFO L93 Difference]: Finished difference Result 8907 states and 12991 transitions. [2023-12-19 08:57:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 08:57:56,234 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 141 [2023-12-19 08:57:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:56,247 INFO L225 Difference]: With dead ends: 8907 [2023-12-19 08:57:56,247 INFO L226 Difference]: Without dead ends: 5227 [2023-12-19 08:57:56,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=712, Invalid=1544, Unknown=0, NotChecked=0, Total=2256 [2023-12-19 08:57:56,255 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 984 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:56,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1365 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 08:57:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5227 states. [2023-12-19 08:57:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5227 to 3596. [2023-12-19 08:57:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 2912 states have (on average 1.433379120879121) internal successors, (4174), 2925 states have internal predecessors, (4174), 541 states have call successors, (541), 142 states have call predecessors, (541), 142 states have return successors, (541), 528 states have call predecessors, (541), 541 states have call successors, (541) [2023-12-19 08:57:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5256 transitions. [2023-12-19 08:57:56,720 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5256 transitions. Word has length 141 [2023-12-19 08:57:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:56,720 INFO L495 AbstractCegarLoop]: Abstraction has 3596 states and 5256 transitions. [2023-12-19 08:57:56,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-19 08:57:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5256 transitions. [2023-12-19 08:57:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 08:57:56,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:56,722 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:56,733 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 08:57:56,930 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 08:57:56,930 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:56,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:56,931 INFO L85 PathProgramCache]: Analyzing trace with hash 365655051, now seen corresponding path program 1 times [2023-12-19 08:57:56,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:56,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612253424] [2023-12-19 08:57:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:56,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:56,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:56,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804462444] [2023-12-19 08:57:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:56,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:56,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:56,954 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 08:57:57,016 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 08:57:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:57,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 08:57:57,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:57:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:57:58,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:57:58,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:57:58,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612253424] [2023-12-19 08:57:58,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:57:58,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804462444] [2023-12-19 08:57:58,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804462444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:57:58,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:57:58,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 08:57:58,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215759767] [2023-12-19 08:57:58,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:57:58,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 08:57:58,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:57:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 08:57:58,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 08:57:58,017 INFO L87 Difference]: Start difference. First operand 3596 states and 5256 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:58,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:57:58,847 INFO L93 Difference]: Finished difference Result 7607 states and 11173 transitions. [2023-12-19 08:57:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 08:57:58,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2023-12-19 08:57:58,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:57:58,859 INFO L225 Difference]: With dead ends: 7607 [2023-12-19 08:57:58,860 INFO L226 Difference]: Without dead ends: 4727 [2023-12-19 08:57:58,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-19 08:57:58,866 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 281 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:57:58,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 751 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 08:57:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2023-12-19 08:57:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4705. [2023-12-19 08:57:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4705 states, 3765 states have (on average 1.4393094289508632) internal successors, (5419), 3779 states have internal predecessors, (5419), 743 states have call successors, (743), 196 states have call predecessors, (743), 196 states have return successors, (743), 729 states have call predecessors, (743), 743 states have call successors, (743) [2023-12-19 08:57:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4705 states to 4705 states and 6905 transitions. [2023-12-19 08:57:59,496 INFO L78 Accepts]: Start accepts. Automaton has 4705 states and 6905 transitions. Word has length 141 [2023-12-19 08:57:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:57:59,497 INFO L495 AbstractCegarLoop]: Abstraction has 4705 states and 6905 transitions. [2023-12-19 08:57:59,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:57:59,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4705 states and 6905 transitions. [2023-12-19 08:57:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 08:57:59,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:57:59,498 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:59,508 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 08:57:59,707 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 08:57:59,708 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:57:59,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:57:59,708 INFO L85 PathProgramCache]: Analyzing trace with hash -289592819, now seen corresponding path program 1 times [2023-12-19 08:57:59,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:57:59,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511583594] [2023-12-19 08:57:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:59,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:57:59,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:57:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363519686] [2023-12-19 08:57:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:57:59,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:57:59,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:57:59,726 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 08:57:59,752 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 08:57:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:57:59,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 08:57:59,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:58:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 08:58:33,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:58:33,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:58:33,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511583594] [2023-12-19 08:58:33,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:58:33,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363519686] [2023-12-19 08:58:33,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363519686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:58:33,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:58:33,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-19 08:58:33,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911862367] [2023-12-19 08:58:33,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:58:33,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 08:58:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:58:33,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 08:58:33,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-19 08:58:33,758 INFO L87 Difference]: Start difference. First operand 4705 states and 6905 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:58:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:58:35,442 INFO L93 Difference]: Finished difference Result 4989 states and 7274 transitions. [2023-12-19 08:58:35,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 08:58:35,442 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-19 08:58:35,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:58:35,455 INFO L225 Difference]: With dead ends: 4989 [2023-12-19 08:58:35,455 INFO L226 Difference]: Without dead ends: 4987 [2023-12-19 08:58:35,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2023-12-19 08:58:35,459 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 395 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 08:58:35,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 835 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 08:58:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2023-12-19 08:58:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 4770. [2023-12-19 08:58:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 3830 states have (on average 1.4386422976501305) internal successors, (5510), 3844 states have internal predecessors, (5510), 743 states have call successors, (743), 196 states have call predecessors, (743), 196 states have return successors, (743), 729 states have call predecessors, (743), 743 states have call successors, (743) [2023-12-19 08:58:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 6996 transitions. [2023-12-19 08:58:36,101 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 6996 transitions. Word has length 142 [2023-12-19 08:58:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:58:36,102 INFO L495 AbstractCegarLoop]: Abstraction has 4770 states and 6996 transitions. [2023-12-19 08:58:36,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 08:58:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 6996 transitions. [2023-12-19 08:58:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 08:58:36,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:58:36,103 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:58:36,111 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 08:58:36,309 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 08:58:36,310 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:58:36,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:58:36,310 INFO L85 PathProgramCache]: Analyzing trace with hash -93539699, now seen corresponding path program 1 times [2023-12-19 08:58:36,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:58:36,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891488633] [2023-12-19 08:58:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:58:36,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:58:36,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:58:36,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724999475] [2023-12-19 08:58:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:58:36,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:58:36,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:58:36,329 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 08:58:36,333 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 08:58:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:58:36,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 08:58:36,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:01:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-19 09:01:31,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:01:31,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:01:31,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891488633] [2023-12-19 09:01:31,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:01:31,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724999475] [2023-12-19 09:01:31,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724999475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:01:31,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:01:31,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 09:01:31,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431962770] [2023-12-19 09:01:31,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:01:31,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 09:01:31,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:01:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 09:01:31,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-19 09:01:31,532 INFO L87 Difference]: Start difference. First operand 4770 states and 6996 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 09:01:32,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:01:32,963 INFO L93 Difference]: Finished difference Result 4992 states and 7277 transitions. [2023-12-19 09:01:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 09:01:32,963 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-19 09:01:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:01:32,974 INFO L225 Difference]: With dead ends: 4992 [2023-12-19 09:01:32,975 INFO L226 Difference]: Without dead ends: 4990 [2023-12-19 09:01:32,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2023-12-19 09:01:32,978 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 333 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 09:01:32,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 957 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 09:01:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4990 states. [2023-12-19 09:01:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4990 to 4833. [2023-12-19 09:01:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4833 states, 3893 states have (on average 1.4377087079373234) internal successors, (5597), 3907 states have internal predecessors, (5597), 743 states have call successors, (743), 196 states have call predecessors, (743), 196 states have return successors, (743), 729 states have call predecessors, (743), 743 states have call successors, (743) [2023-12-19 09:01:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4833 states to 4833 states and 7083 transitions. [2023-12-19 09:01:33,612 INFO L78 Accepts]: Start accepts. Automaton has 4833 states and 7083 transitions. Word has length 142 [2023-12-19 09:01:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:01:33,612 INFO L495 AbstractCegarLoop]: Abstraction has 4833 states and 7083 transitions. [2023-12-19 09:01:33,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-19 09:01:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4833 states and 7083 transitions. [2023-12-19 09:01:33,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 09:01:33,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:01:33,614 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:33,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-19 09:01:33,814 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 09:01:33,815 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:01:33,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:01:33,815 INFO L85 PathProgramCache]: Analyzing trace with hash -100777305, now seen corresponding path program 1 times [2023-12-19 09:01:33,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:01:33,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412483005] [2023-12-19 09:01:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:01:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:01:33,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:01:33,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354080737] [2023-12-19 09:01:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:01:33,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:01:33,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:01:33,835 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 09:01:33,837 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 09:01:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:01:33,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-19 09:01:33,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:06:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-19 09:06:48,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 09:09:11,029 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 09:09:11,029 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 09:09:11,046 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 09:09:11,059 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 09:09:11,253 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 09:09:11,254 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 144 with TraceHistMax 20,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-48-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-19 09:09:11,258 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] [2023-12-19 09:09:11,261 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 09:09:11,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 09:09:11 BoogieIcfgContainer [2023-12-19 09:09:11,265 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 09:09:11,266 INFO L158 Benchmark]: Toolchain (without parser) took 845784.16ms. Allocated memory was 184.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 127.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-19 09:09:11,266 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 184.5MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 09:09:11,266 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.44ms. Allocated memory is still 184.5MB. Free memory was 127.2MB in the beginning and 111.9MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 09:09:11,266 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.88ms. Allocated memory is still 184.5MB. Free memory was 111.8MB in the beginning and 107.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 09:09:11,266 INFO L158 Benchmark]: Boogie Preprocessor took 95.24ms. Allocated memory is still 184.5MB. Free memory was 107.6MB in the beginning and 101.8MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-19 09:09:11,268 INFO L158 Benchmark]: RCFGBuilder took 700.10ms. Allocated memory was 184.5MB in the beginning and 294.6MB in the end (delta: 110.1MB). Free memory was 101.8MB in the beginning and 235.3MB in the end (delta: -133.5MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2023-12-19 09:09:11,269 INFO L158 Benchmark]: TraceAbstraction took 844548.82ms. Allocated memory was 294.6MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 234.7MB in the beginning and 1.2GB in the end (delta: -971.0MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-19 09:09:11,270 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 184.5MB. Free memory is still 134.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 355.44ms. Allocated memory is still 184.5MB. Free memory was 127.2MB in the beginning and 111.9MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 76.88ms. Allocated memory is still 184.5MB. Free memory was 111.8MB in the beginning and 107.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 95.24ms. Allocated memory is still 184.5MB. Free memory was 107.6MB in the beginning and 101.8MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 700.10ms. Allocated memory was 184.5MB in the beginning and 294.6MB in the end (delta: 110.1MB). Free memory was 101.8MB in the beginning and 235.3MB in the end (delta: -133.5MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * TraceAbstraction took 844548.82ms. Allocated memory was 294.6MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 234.7MB in the beginning and 1.2GB in the end (delta: -971.0MB). Peak memory consumption was 1.2GB. 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 144 with TraceHistMax 20,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-48-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 844.5s, OverallIterations: 27, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 76.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14661 SdHoareTripleChecker+Valid, 40.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14603 mSDsluCounter, 22720 SdHoareTripleChecker+Invalid, 37.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18704 mSDsCounter, 2827 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20202 IncrementalHoareTripleChecker+Invalid, 23029 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2827 mSolverCounterUnsat, 4016 mSDtfsCounter, 20202 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5093 GetRequests, 4351 SyntacticMatches, 1 SemanticMatches, 741 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11613 ImplicationChecksByTransitivity, 62.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4833occurred in iteration=26, InterpolantAutomatonStates: 568, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.0s AutomataMinimizationTime, 26 MinimizatonAttempts, 10908 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 5.4s SatisfiabilityAnalysisTime, 290.9s InterpolantComputationTime, 3764 NumberOfCodeBlocks, 3764 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 4571 ConstructedInterpolants, 9 QuantifiedInterpolants, 44220 SizeOfPredicates, 328 NumberOfNonLiveVariables, 9476 ConjunctsInSsa, 514 ConjunctsInUnsatCore, 33 InterpolantComputations, 19 PerfectInterpolantSequences, 24150/25080 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