/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_floatingpointinfluence_no-floats_file-83.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 11:03:40,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 11:03:40,807 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 11:03:40,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 11:03:40,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 11:03:40,843 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 11:03:40,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 11:03:40,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 11:03:40,846 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 11:03:40,850 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 11:03:40,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 11:03:40,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 11:03:40,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 11:03:40,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 11:03:40,853 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 11:03:40,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 11:03:40,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 11:03:40,854 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 11:03:40,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 11:03:40,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 11:03:40,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 11:03:40,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 11:03:40,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 11:03:40,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 11:03:40,855 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 11:03:40,856 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 11:03:40,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 11:03:40,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 11:03:40,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 11:03:40,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 11:03:40,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 11:03:40,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 11:03:40,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 11:03:40,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 11:03:40,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 11:03:40,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 11:03:40,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 11:03:40,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 11:03:40,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 11:03:40,860 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 11:03:40,860 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 11:03:40,860 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 11:03:40,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 11:03:40,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 11:03:41,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 11:03:41,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 11:03:41,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 11:03:41,127 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 11:03:41,128 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 11:03:41,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-83.i [2023-12-19 11:03:42,445 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 11:03:42,633 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 11:03:42,634 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-83.i [2023-12-19 11:03:42,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb6f13da/2f0a0d25491f4c839af565250f0ea8ef/FLAGa1a433506 [2023-12-19 11:03:42,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb6f13da/2f0a0d25491f4c839af565250f0ea8ef [2023-12-19 11:03:42,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 11:03:42,658 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 11:03:42,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 11:03:42,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 11:03:42,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 11:03:42,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:42,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50deca6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42, skipping insertion in model container [2023-12-19 11:03:42,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:42,702 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 11:03:42,865 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_floatingpointinfluence_no-floats_file-83.i[916,929] [2023-12-19 11:03:42,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 11:03:42,919 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 11:03:42,930 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_floatingpointinfluence_no-floats_file-83.i[916,929] [2023-12-19 11:03:42,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 11:03:42,969 INFO L206 MainTranslator]: Completed translation [2023-12-19 11:03:42,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42 WrapperNode [2023-12-19 11:03:42,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 11:03:42,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 11:03:42,971 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 11:03:42,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 11:03:42,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:42,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,041 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 139 [2023-12-19 11:03:43,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 11:03:43,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 11:03:43,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 11:03:43,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 11:03:43,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,056 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,071 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 11:03:43,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,097 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 11:03:43,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 11:03:43,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 11:03:43,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 11:03:43,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (1/1) ... [2023-12-19 11:03:43,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 11:03:43,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:03:43,134 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 11:03:43,158 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 11:03:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 11:03:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 11:03:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 11:03:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 11:03:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 11:03:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 11:03:43,265 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 11:03:43,268 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 11:03:43,514 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 11:03:43,541 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 11:03:43,541 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 11:03:43,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:03:43 BoogieIcfgContainer [2023-12-19 11:03:43,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 11:03:43,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 11:03:43,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 11:03:43,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 11:03:43,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:03:42" (1/3) ... [2023-12-19 11:03:43,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f420e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:03:43, skipping insertion in model container [2023-12-19 11:03:43,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:03:42" (2/3) ... [2023-12-19 11:03:43,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f420e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:03:43, skipping insertion in model container [2023-12-19 11:03:43,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:03:43" (3/3) ... [2023-12-19 11:03:43,550 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-83.i [2023-12-19 11:03:43,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 11:03:43,566 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 11:03:43,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 11:03:43,632 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;@65413959, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 11:03:43,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 11:03:43,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 35 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:03:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 11:03:43,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:03:43,644 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:43,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:03:43,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:03:43,649 INFO L85 PathProgramCache]: Analyzing trace with hash -889154965, now seen corresponding path program 1 times [2023-12-19 11:03:43,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:03:43,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980782004] [2023-12-19 11:03:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:03:43,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:03:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:03:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:03:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980782004] [2023-12-19 11:03:43,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 11:03:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98082123] [2023-12-19 11:03:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:03:43,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:03:43,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:03:43,859 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 11:03:43,862 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 11:03:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:03:43,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 11:03:43,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:03:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-19 11:03:44,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:03:44,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98082123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:03:44,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:03:44,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 11:03:44,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252468588] [2023-12-19 11:03:44,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:03:44,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 11:03:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:03:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 11:03:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 11:03:44,038 INFO L87 Difference]: Start difference. First operand has 50 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 35 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 11:03:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:03:44,088 INFO L93 Difference]: Finished difference Result 97 states and 167 transitions. [2023-12-19 11:03:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 11:03:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2023-12-19 11:03:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:03:44,099 INFO L225 Difference]: With dead ends: 97 [2023-12-19 11:03:44,099 INFO L226 Difference]: Without dead ends: 48 [2023-12-19 11:03:44,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 83 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 11:03:44,105 INFO L413 NwaCegarLoop]: 69 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, 69 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 11:03:44,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 11:03:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-19 11:03:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-19 11:03:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:03:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 72 transitions. [2023-12-19 11:03:44,153 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 72 transitions. Word has length 84 [2023-12-19 11:03:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:03:44,153 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 72 transitions. [2023-12-19 11:03:44,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 11:03:44,154 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 72 transitions. [2023-12-19 11:03:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 11:03:44,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:03:44,160 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:44,172 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 11:03:44,372 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 11:03:44,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:03:44,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:03:44,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1546025129, now seen corresponding path program 1 times [2023-12-19 11:03:44,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:03:44,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785010764] [2023-12-19 11:03:44,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:03:44,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:03:44,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:03:44,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265626266] [2023-12-19 11:03:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:03:44,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:03:44,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:03:44,428 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 11:03:44,450 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 11:03:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:03:44,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 11:03:44,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:03:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:03:44,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:03:44,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:03:44,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785010764] [2023-12-19 11:03:44,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:03:44,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265626266] [2023-12-19 11:03:44,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265626266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:03:44,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:03:44,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 11:03:44,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898902234] [2023-12-19 11:03:44,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:03:44,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 11:03:44,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:03:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 11:03:44,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:03:44,590 INFO L87 Difference]: Start difference. First operand 48 states and 72 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:03:44,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:03:44,652 INFO L93 Difference]: Finished difference Result 119 states and 179 transitions. [2023-12-19 11:03:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 11:03:44,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 84 [2023-12-19 11:03:44,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:03:44,657 INFO L225 Difference]: With dead ends: 119 [2023-12-19 11:03:44,657 INFO L226 Difference]: Without dead ends: 72 [2023-12-19 11:03:44,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:03:44,658 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 66 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 11:03:44,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 128 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 11:03:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-19 11:03:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 48. [2023-12-19 11:03:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:03:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2023-12-19 11:03:44,674 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 70 transitions. Word has length 84 [2023-12-19 11:03:44,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:03:44,675 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 70 transitions. [2023-12-19 11:03:44,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:03:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 70 transitions. [2023-12-19 11:03:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 11:03:44,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:03:44,677 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:44,688 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 11:03:44,884 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 11:03:44,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:03:44,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:03:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash 564395012, now seen corresponding path program 1 times [2023-12-19 11:03:44,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:03:44,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053747175] [2023-12-19 11:03:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:03:44,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:03:44,910 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:03:44,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542540962] [2023-12-19 11:03:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:03:44,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:03:44,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:03:44,913 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 11:03:44,934 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 11:03:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:03:45,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 11:03:45,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:03:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:03:45,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:03:45,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:03:45,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053747175] [2023-12-19 11:03:45,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:03:45,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542540962] [2023-12-19 11:03:45,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542540962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:03:45,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:03:45,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 11:03:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086208460] [2023-12-19 11:03:45,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:03:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 11:03:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:03:45,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 11:03:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 11:03:45,112 INFO L87 Difference]: Start difference. First operand 48 states and 70 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:03:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:03:45,165 INFO L93 Difference]: Finished difference Result 100 states and 146 transitions. [2023-12-19 11:03:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 11:03:45,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 85 [2023-12-19 11:03:45,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:03:45,167 INFO L225 Difference]: With dead ends: 100 [2023-12-19 11:03:45,167 INFO L226 Difference]: Without dead ends: 53 [2023-12-19 11:03:45,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 11:03:45,172 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 13 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 11:03:45,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 167 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 11:03:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-19 11:03:45,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2023-12-19 11:03:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:03:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 72 transitions. [2023-12-19 11:03:45,179 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 72 transitions. Word has length 85 [2023-12-19 11:03:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:03:45,180 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 72 transitions. [2023-12-19 11:03:45,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:03:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 72 transitions. [2023-12-19 11:03:45,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 11:03:45,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:03:45,181 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:45,192 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 11:03:45,382 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 11:03:45,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:03:45,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:03:45,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1999616212, now seen corresponding path program 1 times [2023-12-19 11:03:45,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:03:45,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986160597] [2023-12-19 11:03:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:03:45,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:03:45,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:03:45,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995049166] [2023-12-19 11:03:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:03:45,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:03:45,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:03:45,408 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 11:03:45,419 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 11:03:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:03:45,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 11:03:45,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:03:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 126 proven. 27 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-19 11:03:46,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:04:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:04:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:04:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986160597] [2023-12-19 11:04:05,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:04:05,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995049166] [2023-12-19 11:04:05,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995049166] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 11:04:05,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 11:04:05,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2023-12-19 11:04:05,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575493751] [2023-12-19 11:04:05,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:04:05,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 11:04:05,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:04:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 11:04:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-19 11:04:05,101 INFO L87 Difference]: Start difference. First operand 50 states and 72 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:04:09,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 11:04:15,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 11:04:21,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 11:04:24,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 11:04:28,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 11:04:29,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:04:29,211 INFO L93 Difference]: Finished difference Result 126 states and 178 transitions. [2023-12-19 11:04:29,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 11:04:29,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 86 [2023-12-19 11:04:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:04:29,214 INFO L225 Difference]: With dead ends: 126 [2023-12-19 11:04:29,215 INFO L226 Difference]: Without dead ends: 77 [2023-12-19 11:04:29,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-19 11:04:29,216 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 117 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:04:29,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 265 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 4 Unknown, 0 Unchecked, 22.1s Time] [2023-12-19 11:04:29,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-19 11:04:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2023-12-19 11:04:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 47 states have internal predecessors, (62), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:04:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2023-12-19 11:04:29,224 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 86 [2023-12-19 11:04:29,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:04:29,225 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2023-12-19 11:04:29,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:04:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2023-12-19 11:04:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 11:04:29,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:04:29,227 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:29,234 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 11:04:29,427 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 11:04:29,428 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:04:29,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:04:29,429 INFO L85 PathProgramCache]: Analyzing trace with hash -541450143, now seen corresponding path program 1 times [2023-12-19 11:04:29,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:04:29,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282370860] [2023-12-19 11:04:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:04:29,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:04:29,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:04:29,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293329619] [2023-12-19 11:04:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:04:29,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:04:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:04:29,448 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 11:04:29,456 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 11:04:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:04:29,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 11:04:29,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:04:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 18 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-19 11:04:30,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:04:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:04:38,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:04:38,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282370860] [2023-12-19 11:04:38,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:04:38,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293329619] [2023-12-19 11:04:38,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293329619] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 11:04:38,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 11:04:38,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2023-12-19 11:04:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111506940] [2023-12-19 11:04:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:04:38,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 11:04:38,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:04:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 11:04:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-12-19 11:04:38,878 INFO L87 Difference]: Start difference. First operand 62 states and 88 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:04:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:04:51,860 INFO L93 Difference]: Finished difference Result 192 states and 259 transitions. [2023-12-19 11:04:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 11:04:51,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-12-19 11:04:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:04:51,863 INFO L225 Difference]: With dead ends: 192 [2023-12-19 11:04:51,863 INFO L226 Difference]: Without dead ends: 131 [2023-12-19 11:04:51,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2023-12-19 11:04:51,865 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 191 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-19 11:04:51,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 309 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-19 11:04:51,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-19 11:04:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 68. [2023-12-19 11:04:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:04:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2023-12-19 11:04:51,875 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 87 [2023-12-19 11:04:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:04:51,876 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2023-12-19 11:04:51,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:04:51,876 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2023-12-19 11:04:51,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 11:04:51,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:04:51,878 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:51,886 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 11:04:52,080 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 11:04:52,081 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:04:52,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:04:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1233557219, now seen corresponding path program 1 times [2023-12-19 11:04:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:04:52,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479308883] [2023-12-19 11:04:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:04:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:04:52,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:04:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61878729] [2023-12-19 11:04:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:04:52,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:04:52,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:04:52,097 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 11:04:52,100 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 11:04:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:04:52,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 11:04:52,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:04:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 18 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-19 11:04:53,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:05:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:05:00,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:05:00,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479308883] [2023-12-19 11:05:00,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:05:00,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61878729] [2023-12-19 11:05:00,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61878729] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 11:05:00,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 11:05:00,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2023-12-19 11:05:00,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946924841] [2023-12-19 11:05:00,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:05:00,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 11:05:00,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:05:00,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 11:05:00,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-12-19 11:05:00,924 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:05:15,863 INFO L93 Difference]: Finished difference Result 180 states and 249 transitions. [2023-12-19 11:05:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 11:05:15,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-12-19 11:05:15,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:05:15,865 INFO L225 Difference]: With dead ends: 180 [2023-12-19 11:05:15,865 INFO L226 Difference]: Without dead ends: 113 [2023-12-19 11:05:15,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=152, Invalid=497, Unknown=1, NotChecked=0, Total=650 [2023-12-19 11:05:15,867 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 175 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 11:05:15,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 279 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 11:05:15,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-19 11:05:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 65. [2023-12-19 11:05:15,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:05:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 92 transitions. [2023-12-19 11:05:15,876 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 92 transitions. Word has length 87 [2023-12-19 11:05:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:05:15,876 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 92 transitions. [2023-12-19 11:05:15,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:15,877 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 92 transitions. [2023-12-19 11:05:15,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 11:05:15,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:05:15,878 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:05:15,885 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 11:05:16,085 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 11:05:16,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:05:16,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:05:16,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1209460803, now seen corresponding path program 1 times [2023-12-19 11:05:16,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:05:16,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137192999] [2023-12-19 11:05:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:16,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:05:16,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:05:16,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265300368] [2023-12-19 11:05:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:16,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:05:16,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:05:16,103 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 11:05:16,104 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 11:05:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:05:16,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 11:05:16,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:05:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-19 11:05:16,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:05:16,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:05:16,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137192999] [2023-12-19 11:05:16,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:05:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265300368] [2023-12-19 11:05:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265300368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:05:16,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:05:16,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 11:05:16,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091849072] [2023-12-19 11:05:16,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:05:16,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 11:05:16,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:05:16,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 11:05:16,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 11:05:16,243 INFO L87 Difference]: Start difference. First operand 65 states and 92 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 11:05:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:05:16,355 INFO L93 Difference]: Finished difference Result 153 states and 219 transitions. [2023-12-19 11:05:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 11:05:16,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2023-12-19 11:05:16,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:05:16,357 INFO L225 Difference]: With dead ends: 153 [2023-12-19 11:05:16,357 INFO L226 Difference]: Without dead ends: 89 [2023-12-19 11:05:16,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 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 11:05:16,359 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 94 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:05:16,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 109 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:05:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-19 11:05:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2023-12-19 11:05:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:05:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2023-12-19 11:05:16,366 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 87 [2023-12-19 11:05:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:05:16,367 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2023-12-19 11:05:16,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 11:05:16,367 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2023-12-19 11:05:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 11:05:16,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:05:16,374 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:05:16,387 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 11:05:16,582 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 11:05:16,582 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:05:16,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:05:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1889519173, now seen corresponding path program 1 times [2023-12-19 11:05:16,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:05:16,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327986966] [2023-12-19 11:05:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:16,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:05:16,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:05:16,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976388661] [2023-12-19 11:05:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:16,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:05:16,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:05:16,612 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 11:05:16,615 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 11:05:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:05:16,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 11:05:16,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:05:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 186 proven. 15 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-19 11:05:17,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:05:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:05:22,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:05:22,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327986966] [2023-12-19 11:05:22,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:05:22,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976388661] [2023-12-19 11:05:22,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976388661] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 11:05:22,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 11:05:22,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 19 [2023-12-19 11:05:22,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400874262] [2023-12-19 11:05:22,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:05:22,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 11:05:22,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:05:22,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 11:05:22,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-19 11:05:22,943 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:29,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:05:29,461 INFO L93 Difference]: Finished difference Result 189 states and 248 transitions. [2023-12-19 11:05:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 11:05:29,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-12-19 11:05:29,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:05:29,465 INFO L225 Difference]: With dead ends: 189 [2023-12-19 11:05:29,465 INFO L226 Difference]: Without dead ends: 125 [2023-12-19 11:05:29,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2023-12-19 11:05:29,467 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 215 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 11:05:29,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 244 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 11:05:29,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-19 11:05:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 68. [2023-12-19 11:05:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 states have internal predecessors, (67), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:05:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 93 transitions. [2023-12-19 11:05:29,477 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 93 transitions. Word has length 87 [2023-12-19 11:05:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:05:29,478 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 93 transitions. [2023-12-19 11:05:29,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 93 transitions. [2023-12-19 11:05:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 11:05:29,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:05:29,479 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:05:29,486 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 11:05:29,685 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 11:05:29,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:05:29,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:05:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1128256157, now seen corresponding path program 1 times [2023-12-19 11:05:29,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:05:29,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407697617] [2023-12-19 11:05:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:29,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:05:29,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:05:29,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470733114] [2023-12-19 11:05:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:29,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:05:29,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:05:29,702 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 11:05:29,705 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 11:05:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:05:29,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 11:05:29,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:05:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:05:32,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:05:32,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:05:32,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407697617] [2023-12-19 11:05:32,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:05:32,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470733114] [2023-12-19 11:05:32,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470733114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:05:32,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:05:32,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 11:05:32,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992962800] [2023-12-19 11:05:32,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:05:32,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 11:05:32,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:05:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 11:05:32,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 11:05:32,211 INFO L87 Difference]: Start difference. First operand 68 states and 93 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:32,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:05:32,582 INFO L93 Difference]: Finished difference Result 156 states and 211 transitions. [2023-12-19 11:05:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 11:05:32,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-12-19 11:05:32,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:05:32,584 INFO L225 Difference]: With dead ends: 156 [2023-12-19 11:05:32,584 INFO L226 Difference]: Without dead ends: 89 [2023-12-19 11:05:32,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 11:05:32,585 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 53 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 11:05:32,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 247 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 11:05:32,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-19 11:05:32,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 60. [2023-12-19 11:05:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:05:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2023-12-19 11:05:32,604 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 87 [2023-12-19 11:05:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:05:32,605 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2023-12-19 11:05:32,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2023-12-19 11:05:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 11:05:32,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:05:32,606 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:05:32,619 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 11:05:32,820 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 11:05:32,820 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:05:32,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:05:32,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1709567748, now seen corresponding path program 1 times [2023-12-19 11:05:32,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:05:32,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129255062] [2023-12-19 11:05:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:32,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:05:32,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:05:32,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697869193] [2023-12-19 11:05:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:32,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:05:32,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:05:32,847 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 11:05:32,869 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 11:05:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:05:32,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 11:05:32,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:05:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:05:32,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:05:32,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:05:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129255062] [2023-12-19 11:05:32,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:05:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697869193] [2023-12-19 11:05:32,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697869193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:05:32,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:05:32,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 11:05:32,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893362002] [2023-12-19 11:05:32,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:05:32,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 11:05:32,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:05:32,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 11:05:32,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 11:05:32,991 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:05:33,263 INFO L93 Difference]: Finished difference Result 184 states and 257 transitions. [2023-12-19 11:05:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 11:05:33,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2023-12-19 11:05:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:05:33,265 INFO L225 Difference]: With dead ends: 184 [2023-12-19 11:05:33,265 INFO L226 Difference]: Without dead ends: 125 [2023-12-19 11:05:33,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-19 11:05:33,266 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 103 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 11:05:33,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 421 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 11:05:33,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-19 11:05:33,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 65. [2023-12-19 11:05:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:05:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2023-12-19 11:05:33,275 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 88 [2023-12-19 11:05:33,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:05:33,275 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2023-12-19 11:05:33,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2023-12-19 11:05:33,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 11:05:33,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:05:33,277 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:05:33,284 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 11:05:33,483 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 11:05:33,483 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:05:33,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:05:33,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1905341178, now seen corresponding path program 1 times [2023-12-19 11:05:33,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:05:33,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333319281] [2023-12-19 11:05:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:33,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:05:33,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:05:33,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060211988] [2023-12-19 11:05:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:33,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:05:33,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:05:33,498 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 11:05:33,501 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 11:05:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:05:33,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 11:05:33,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:05:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:05:33,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:05:33,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:05:33,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333319281] [2023-12-19 11:05:33,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:05:33,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060211988] [2023-12-19 11:05:33,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060211988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:05:33,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:05:33,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 11:05:33,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142126668] [2023-12-19 11:05:33,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:05:33,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 11:05:33,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:05:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 11:05:33,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:05:33,566 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:05:33,630 INFO L93 Difference]: Finished difference Result 167 states and 229 transitions. [2023-12-19 11:05:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 11:05:33,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2023-12-19 11:05:33,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:05:33,632 INFO L225 Difference]: With dead ends: 167 [2023-12-19 11:05:33,632 INFO L226 Difference]: Without dead ends: 103 [2023-12-19 11:05:33,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:05:33,633 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 48 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:05:33,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 150 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:05:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-19 11:05:33,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 65. [2023-12-19 11:05:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:05:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2023-12-19 11:05:33,641 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 88 [2023-12-19 11:05:33,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:05:33,641 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2023-12-19 11:05:33,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:33,642 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2023-12-19 11:05:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 11:05:33,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:05:33,642 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:05:33,650 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 11:05:33,848 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 11:05:33,848 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:05:33,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:05:33,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1408871400, now seen corresponding path program 1 times [2023-12-19 11:05:33,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:05:33,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358851718] [2023-12-19 11:05:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:33,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:05:33,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:05:33,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852988130] [2023-12-19 11:05:33,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:33,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:05:33,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:05:33,861 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 11:05:33,867 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 11:05:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:05:33,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 11:05:33,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:05:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:05:34,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:05:34,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:05:34,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358851718] [2023-12-19 11:05:34,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:05:34,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852988130] [2023-12-19 11:05:34,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852988130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:05:34,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:05:34,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 11:05:34,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327256171] [2023-12-19 11:05:34,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:05:34,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 11:05:34,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:05:34,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 11:05:34,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 11:05:34,038 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:34,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:05:34,270 INFO L93 Difference]: Finished difference Result 115 states and 153 transitions. [2023-12-19 11:05:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 11:05:34,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2023-12-19 11:05:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:05:34,272 INFO L225 Difference]: With dead ends: 115 [2023-12-19 11:05:34,272 INFO L226 Difference]: Without dead ends: 113 [2023-12-19 11:05:34,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 11:05:34,272 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 83 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 11:05:34,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 275 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 11:05:34,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-19 11:05:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 86. [2023-12-19 11:05:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 11:05:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 117 transitions. [2023-12-19 11:05:34,284 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 117 transitions. Word has length 88 [2023-12-19 11:05:34,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:05:34,284 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 117 transitions. [2023-12-19 11:05:34,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:34,285 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 117 transitions. [2023-12-19 11:05:34,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 11:05:34,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:05:34,286 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:05:34,295 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 11:05:34,492 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 11:05:34,492 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:05:34,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:05:34,493 INFO L85 PathProgramCache]: Analyzing trace with hash 424527115, now seen corresponding path program 1 times [2023-12-19 11:05:34,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:05:34,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594962827] [2023-12-19 11:05:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:34,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:05:34,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:05:34,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313574025] [2023-12-19 11:05:34,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:34,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:05:34,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:05:34,504 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 11:05:34,504 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 11:05:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:05:34,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 11:05:34,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:05:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 186 proven. 15 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-19 11:05:35,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:05:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:05:43,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:05:43,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594962827] [2023-12-19 11:05:43,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:05:43,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313574025] [2023-12-19 11:05:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313574025] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 11:05:43,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 11:05:43,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-12-19 11:05:43,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315292762] [2023-12-19 11:05:43,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:05:43,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 11:05:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:05:43,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 11:05:43,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-12-19 11:05:43,624 INFO L87 Difference]: Start difference. First operand 86 states and 117 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:54,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:05:54,015 INFO L93 Difference]: Finished difference Result 225 states and 292 transitions. [2023-12-19 11:05:54,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 11:05:54,016 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2023-12-19 11:05:54,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:05:54,020 INFO L225 Difference]: With dead ends: 225 [2023-12-19 11:05:54,020 INFO L226 Difference]: Without dead ends: 150 [2023-12-19 11:05:54,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2023-12-19 11:05:54,021 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 172 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 11:05:54,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 269 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 11:05:54,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-19 11:05:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 86. [2023-12-19 11:05:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 11:05:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 117 transitions. [2023-12-19 11:05:54,034 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 117 transitions. Word has length 88 [2023-12-19 11:05:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:05:54,035 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 117 transitions. [2023-12-19 11:05:54,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:05:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 117 transitions. [2023-12-19 11:05:54,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 11:05:54,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:05:54,036 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:05:54,043 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 11:05:54,241 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 11:05:54,242 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:05:54,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:05:54,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2095432819, now seen corresponding path program 1 times [2023-12-19 11:05:54,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:05:54,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802174624] [2023-12-19 11:05:54,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:54,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:05:54,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:05:54,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404316028] [2023-12-19 11:05:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:05:54,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:05:54,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:05:54,256 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 11:05:54,258 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 11:05:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:05:54,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 11:05:54,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:05:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 18 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-19 11:05:55,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:06:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:06:00,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:06:00,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802174624] [2023-12-19 11:06:00,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:06:00,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404316028] [2023-12-19 11:06:00,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404316028] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 11:06:00,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 11:06:00,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2023-12-19 11:06:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343624967] [2023-12-19 11:06:00,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:06:00,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 11:06:00,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:06:00,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 11:06:00,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-19 11:06:00,234 INFO L87 Difference]: Start difference. First operand 86 states and 117 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:04,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:06:04,420 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2023-12-19 11:06:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 11:06:04,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2023-12-19 11:06:04,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:06:04,424 INFO L225 Difference]: With dead ends: 206 [2023-12-19 11:06:04,424 INFO L226 Difference]: Without dead ends: 131 [2023-12-19 11:06:04,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-19 11:06:04,425 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 83 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 11:06:04,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 167 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 11:06:04,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-19 11:06:04,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 76. [2023-12-19 11:06:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 54 states have internal predecessors, (63), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 11:06:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 103 transitions. [2023-12-19 11:06:04,441 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 103 transitions. Word has length 88 [2023-12-19 11:06:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:06:04,442 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 103 transitions. [2023-12-19 11:06:04,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:04,442 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 103 transitions. [2023-12-19 11:06:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 11:06:04,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:06:04,444 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:06:04,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 11:06:04,648 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 11:06:04,648 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:06:04,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:06:04,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1782066568, now seen corresponding path program 1 times [2023-12-19 11:06:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:06:04,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463270028] [2023-12-19 11:06:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:04,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:06:04,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:06:04,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426650095] [2023-12-19 11:06:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:04,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:06:04,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:06:04,660 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 11:06:04,664 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 11:06:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:06:04,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 11:06:04,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:06:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:06:04,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:06:04,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:06:04,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463270028] [2023-12-19 11:06:04,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:06:04,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426650095] [2023-12-19 11:06:04,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426650095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:06:04,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:06:04,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 11:06:04,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384738347] [2023-12-19 11:06:04,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:06:04,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 11:06:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:06:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 11:06:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 11:06:04,781 INFO L87 Difference]: Start difference. First operand 76 states and 103 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:06:04,873 INFO L93 Difference]: Finished difference Result 154 states and 201 transitions. [2023-12-19 11:06:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 11:06:04,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 89 [2023-12-19 11:06:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:06:04,875 INFO L225 Difference]: With dead ends: 154 [2023-12-19 11:06:04,875 INFO L226 Difference]: Without dead ends: 89 [2023-12-19 11:06:04,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 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 11:06:04,875 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:06:04,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 136 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:06:04,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-19 11:06:04,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2023-12-19 11:06:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 58 states have internal predecessors, (64), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 11:06:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2023-12-19 11:06:04,889 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 89 [2023-12-19 11:06:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:06:04,889 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2023-12-19 11:06:04,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2023-12-19 11:06:04,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 11:06:04,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:06:04,890 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:06:04,897 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 11:06:05,097 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 11:06:05,097 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:06:05,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:06:05,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2048758104, now seen corresponding path program 1 times [2023-12-19 11:06:05,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:06:05,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121993388] [2023-12-19 11:06:05,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:05,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:06:05,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:06:05,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133831939] [2023-12-19 11:06:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:05,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:06:05,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:06:05,109 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 11:06:05,128 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 11:06:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:06:05,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 11:06:05,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:06:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:06:05,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:06:05,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:06:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121993388] [2023-12-19 11:06:05,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:06:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133831939] [2023-12-19 11:06:05,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133831939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:06:05,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:06:05,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 11:06:05,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956915911] [2023-12-19 11:06:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:06:05,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 11:06:05,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:06:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 11:06:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 11:06:05,725 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:06:06,346 INFO L93 Difference]: Finished difference Result 127 states and 159 transitions. [2023-12-19 11:06:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 11:06:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2023-12-19 11:06:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:06:06,348 INFO L225 Difference]: With dead ends: 127 [2023-12-19 11:06:06,348 INFO L226 Difference]: Without dead ends: 125 [2023-12-19 11:06:06,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-19 11:06:06,349 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 93 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 11:06:06,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 405 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 11:06:06,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-19 11:06:06,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2023-12-19 11:06:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 85 states have internal predecessors, (93), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-19 11:06:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 151 transitions. [2023-12-19 11:06:06,373 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 151 transitions. Word has length 91 [2023-12-19 11:06:06,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:06:06,374 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 151 transitions. [2023-12-19 11:06:06,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 151 transitions. [2023-12-19 11:06:06,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 11:06:06,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:06:06,375 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:06:06,388 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 11:06:06,581 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 11:06:06,582 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:06:06,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:06:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1988043754, now seen corresponding path program 1 times [2023-12-19 11:06:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:06:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008591123] [2023-12-19 11:06:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:06,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:06:06,591 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:06:06,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792513480] [2023-12-19 11:06:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:06,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:06:06,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:06:06,593 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 11:06:06,597 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 11:06:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:06:06,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 11:06:06,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:06:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:06:06,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:06:06,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:06:06,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008591123] [2023-12-19 11:06:06,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:06:06,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792513480] [2023-12-19 11:06:06,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792513480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:06:06,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:06:06,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 11:06:06,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745390009] [2023-12-19 11:06:06,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:06:06,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 11:06:06,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:06:06,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 11:06:06,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 11:06:06,908 INFO L87 Difference]: Start difference. First operand 118 states and 151 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:06:07,394 INFO L93 Difference]: Finished difference Result 159 states and 198 transitions. [2023-12-19 11:06:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 11:06:07,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2023-12-19 11:06:07,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:06:07,395 INFO L225 Difference]: With dead ends: 159 [2023-12-19 11:06:07,395 INFO L226 Difference]: Without dead ends: 157 [2023-12-19 11:06:07,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-19 11:06:07,396 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 85 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 11:06:07,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 472 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 11:06:07,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-19 11:06:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 118. [2023-12-19 11:06:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 85 states have internal predecessors, (93), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-19 11:06:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 151 transitions. [2023-12-19 11:06:07,419 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 151 transitions. Word has length 91 [2023-12-19 11:06:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:06:07,419 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 151 transitions. [2023-12-19 11:06:07,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:07,419 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 151 transitions. [2023-12-19 11:06:07,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 11:06:07,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:06:07,420 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:06:07,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 11:06:07,626 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 11:06:07,627 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:06:07,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:06:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash -989333004, now seen corresponding path program 1 times [2023-12-19 11:06:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:06:07,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30064550] [2023-12-19 11:06:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:07,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:06:07,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:06:07,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151352965] [2023-12-19 11:06:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:07,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:06:07,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:06:07,638 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 11:06:07,638 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 11:06:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:06:07,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 11:06:07,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:06:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:06:07,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:06:07,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:06:07,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30064550] [2023-12-19 11:06:07,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:06:07,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151352965] [2023-12-19 11:06:07,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151352965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:06:07,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:06:07,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 11:06:07,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651371603] [2023-12-19 11:06:07,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:06:07,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 11:06:07,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:06:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 11:06:07,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:06:07,720 INFO L87 Difference]: Start difference. First operand 118 states and 151 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:06:07,810 INFO L93 Difference]: Finished difference Result 254 states and 324 transitions. [2023-12-19 11:06:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 11:06:07,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2023-12-19 11:06:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:06:07,812 INFO L225 Difference]: With dead ends: 254 [2023-12-19 11:06:07,812 INFO L226 Difference]: Without dead ends: 151 [2023-12-19 11:06:07,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:06:07,813 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 47 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:06:07,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 115 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:06:07,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-19 11:06:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2023-12-19 11:06:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.1020408163265305) internal successors, (108), 102 states have internal predecessors, (108), 42 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 11:06:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 192 transitions. [2023-12-19 11:06:07,851 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 192 transitions. Word has length 91 [2023-12-19 11:06:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:06:07,852 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 192 transitions. [2023-12-19 11:06:07,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 192 transitions. [2023-12-19 11:06:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 11:06:07,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:06:07,854 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:06:07,861 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 11:06:08,057 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 11:06:08,057 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:06:08,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:06:08,058 INFO L85 PathProgramCache]: Analyzing trace with hash 799221880, now seen corresponding path program 1 times [2023-12-19 11:06:08,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:06:08,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212828640] [2023-12-19 11:06:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:08,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:06:08,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:06:08,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089337318] [2023-12-19 11:06:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:08,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:06:08,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:06:08,069 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 11:06:08,089 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 11:06:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:06:08,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 11:06:08,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:06:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:06:08,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:06:08,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:06:08,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212828640] [2023-12-19 11:06:08,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:06:08,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089337318] [2023-12-19 11:06:08,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089337318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:06:08,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:06:08,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 11:06:08,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542942504] [2023-12-19 11:06:08,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:06:08,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 11:06:08,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:06:08,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 11:06:08,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:06:08,157 INFO L87 Difference]: Start difference. First operand 150 states and 192 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:06:08,237 INFO L93 Difference]: Finished difference Result 262 states and 334 transitions. [2023-12-19 11:06:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 11:06:08,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 11:06:08,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:06:08,238 INFO L225 Difference]: With dead ends: 262 [2023-12-19 11:06:08,238 INFO L226 Difference]: Without dead ends: 127 [2023-12-19 11:06:08,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:06:08,239 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 42 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:06:08,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 148 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:06:08,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-19 11:06:08,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2023-12-19 11:06:08,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 86 states have internal predecessors, (91), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-19 11:06:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2023-12-19 11:06:08,272 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 92 [2023-12-19 11:06:08,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:06:08,272 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2023-12-19 11:06:08,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:08,273 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2023-12-19 11:06:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 11:06:08,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:06:08,273 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:06:08,283 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 11:06:08,480 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 11:06:08,481 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:06:08,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:06:08,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1107678044, now seen corresponding path program 1 times [2023-12-19 11:06:08,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:06:08,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063180308] [2023-12-19 11:06:08,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:08,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:06:08,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:06:08,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069556590] [2023-12-19 11:06:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:08,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:06:08,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:06:08,493 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 11:06:08,512 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 11:06:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:06:08,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 11:06:08,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:06:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:06:08,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:06:08,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:06:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063180308] [2023-12-19 11:06:08,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:06:08,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069556590] [2023-12-19 11:06:08,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069556590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:06:08,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:06:08,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 11:06:08,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201705459] [2023-12-19 11:06:08,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:06:08,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 11:06:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:06:08,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 11:06:08,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 11:06:08,608 INFO L87 Difference]: Start difference. First operand 126 states and 161 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:06:08,751 INFO L93 Difference]: Finished difference Result 242 states and 305 transitions. [2023-12-19 11:06:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 11:06:08,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 11:06:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:06:08,752 INFO L225 Difference]: With dead ends: 242 [2023-12-19 11:06:08,753 INFO L226 Difference]: Without dead ends: 131 [2023-12-19 11:06:08,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 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 11:06:08,754 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 19 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:06:08,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 158 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:06:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-19 11:06:08,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 122. [2023-12-19 11:06:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 83 states have internal predecessors, (88), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 11:06:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 154 transitions. [2023-12-19 11:06:08,776 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 154 transitions. Word has length 92 [2023-12-19 11:06:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:06:08,776 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 154 transitions. [2023-12-19 11:06:08,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:06:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 154 transitions. [2023-12-19 11:06:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 11:06:08,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:06:08,777 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:06:08,788 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 11:06:08,984 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 11:06:08,985 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:06:08,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:06:08,985 INFO L85 PathProgramCache]: Analyzing trace with hash 205402604, now seen corresponding path program 1 times [2023-12-19 11:06:08,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:06:08,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268342026] [2023-12-19 11:06:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:08,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:06:08,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:06:08,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219139197] [2023-12-19 11:06:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:06:08,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:06:08,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:06:09,000 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 11:06:09,001 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 11:06:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-19 11:06:09,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-19 11:06:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-19 11:06:09,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-19 11:06:09,131 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-19 11:06:09,132 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 11:06:09,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-19 11:06:09,340 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 11:06:09,343 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] [2023-12-19 11:06:09,346 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 11:06:09,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 11:06:09 BoogieIcfgContainer [2023-12-19 11:06:09,418 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 11:06:09,419 INFO L158 Benchmark]: Toolchain (without parser) took 146761.27ms. Allocated memory was 331.4MB in the beginning and 398.5MB in the end (delta: 67.1MB). Free memory was 277.7MB in the beginning and 284.1MB in the end (delta: -6.4MB). Peak memory consumption was 62.3MB. Max. memory is 8.0GB. [2023-12-19 11:06:09,419 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 188.7MB. Free memory is still 135.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 11:06:09,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.04ms. Allocated memory is still 331.4MB. Free memory was 277.7MB in the beginning and 264.6MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 11:06:09,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.97ms. Allocated memory is still 331.4MB. Free memory was 264.6MB in the beginning and 261.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 11:06:09,419 INFO L158 Benchmark]: Boogie Preprocessor took 55.13ms. Allocated memory is still 331.4MB. Free memory was 261.6MB in the beginning and 257.0MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 11:06:09,420 INFO L158 Benchmark]: RCFGBuilder took 443.94ms. Allocated memory is still 331.4MB. Free memory was 257.0MB in the beginning and 237.4MB in the end (delta: 19.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-19 11:06:09,420 INFO L158 Benchmark]: TraceAbstraction took 145874.24ms. Allocated memory was 331.4MB in the beginning and 398.5MB in the end (delta: 67.1MB). Free memory was 236.8MB in the beginning and 284.1MB in the end (delta: -47.3MB). Peak memory consumption was 21.4MB. Max. memory is 8.0GB. [2023-12-19 11:06:09,421 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 188.7MB. Free memory is still 135.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 311.04ms. Allocated memory is still 331.4MB. Free memory was 277.7MB in the beginning and 264.6MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.97ms. Allocated memory is still 331.4MB. Free memory was 264.6MB in the beginning and 261.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.13ms. Allocated memory is still 331.4MB. Free memory was 261.6MB in the beginning and 257.0MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 443.94ms. Allocated memory is still 331.4MB. Free memory was 257.0MB in the beginning and 237.4MB in the end (delta: 19.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 145874.24ms. Allocated memory was 331.4MB in the beginning and 398.5MB in the end (delta: 67.1MB). Free memory was 236.8MB in the beginning and 284.1MB in the end (delta: -47.3MB). Peak memory consumption was 21.4MB. 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 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 91. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 128; [L23] unsigned char var_1_2 = 0; [L24] unsigned short int var_1_3 = 25; [L25] unsigned char var_1_4 = 4; [L26] signed long int var_1_8 = 127; [L27] signed long int var_1_10 = 0; [L28] signed long int var_1_11 = 128; [L29] signed long int var_1_12 = 24; [L30] signed short int var_1_14 = -128; [L31] signed char var_1_15 = 64; [L32] signed char var_1_16 = 5; [L33] signed long int var_1_17 = 1; [L34] unsigned short int last_1_var_1_1 = 128; [L95] isInitial = 1 [L96] FCALL initially() [L97] COND TRUE 1 [L98] CALL updateLastVariables() [L88] last_1_var_1_1 = var_1_1 [L98] RET updateLastVariables() [L99] CALL updateVariables() [L67] var_1_2 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_3=25, var_1_4=4, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_3=25, var_1_4=4, var_1_8=127] [L68] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_3=25, var_1_4=4, var_1_8=127] [L69] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=25, var_1_4=4, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=25, var_1_4=4, var_1_8=127] [L69] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=25, var_1_4=4, var_1_8=127] [L70] var_1_3 = __VERIFIER_nondet_ushort() [L71] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_4=4, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_4=4, var_1_8=127] [L71] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_4=4, var_1_8=127] [L72] CALL assume_abort_if_not(var_1_3 <= 65534) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=4, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=4, var_1_8=127] [L72] RET assume_abort_if_not(var_1_3 <= 65534) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=4, var_1_8=127] [L73] var_1_4 = __VERIFIER_nondet_uchar() [L74] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_8=127] [L74] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_8=127] [L75] CALL assume_abort_if_not(var_1_4 <= 255) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_8=127] [L75] RET assume_abort_if_not(var_1_4 <= 255) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_8=127] [L76] CALL assume_abort_if_not(var_1_4 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L76] RET assume_abort_if_not(var_1_4 != 0) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=0, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L77] var_1_10 = __VERIFIER_nondet_long() [L78] CALL assume_abort_if_not(var_1_10 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L78] RET assume_abort_if_not(var_1_10 >= -2147483648) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L79] CALL assume_abort_if_not(var_1_10 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L79] RET assume_abort_if_not(var_1_10 <= 2147483647) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=128, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L80] var_1_11 = __VERIFIER_nondet_long() [L81] CALL assume_abort_if_not(var_1_11 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L81] RET assume_abort_if_not(var_1_11 >= -2147483648) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L82] CALL assume_abort_if_not(var_1_11 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L82] RET assume_abort_if_not(var_1_11 <= 2147483647) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L83] var_1_16 = __VERIFIER_nondet_char() [L84] CALL assume_abort_if_not(var_1_16 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=126, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=126, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L84] RET assume_abort_if_not(var_1_16 >= -127) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=126, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L85] CALL assume_abort_if_not(var_1_16 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=126, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=126, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L85] RET assume_abort_if_not(var_1_16 <= 126) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=-128, var_1_15=64, var_1_16=126, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L99] RET updateVariables() [L100] CALL step() [L38] var_1_14 = 200 [L39] var_1_15 = var_1_16 [L40] var_1_17 = var_1_10 [L41] signed long int stepLocal_0 = var_1_3 / var_1_4; VAL [isInitial=1, last_1_var_1_1=128, stepLocal_0=325, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=128, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L42] COND TRUE \read(var_1_2) [L43] var_1_1 = (((((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) < 0 ) ? -((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) : ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))) VAL [isInitial=1, last_1_var_1_1=128, stepLocal_0=325, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L51] signed long int stepLocal_2 = var_1_3 + var_1_1; VAL [isInitial=1, last_1_var_1_1=128, stepLocal_0=325, stepLocal_2=650, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L52] EXPR var_1_14 ^ var_1_15 VAL [isInitial=1, last_1_var_1_1=128, stepLocal_0=325, stepLocal_2=650, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L52] signed long int stepLocal_1 = var_1_14 ^ var_1_15; [L53] COND TRUE var_1_15 <= stepLocal_2 VAL [isInitial=1, last_1_var_1_1=128, stepLocal_0=325, stepLocal_1=325, stepLocal_2=650, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=127] [L54] COND TRUE var_1_1 == stepLocal_1 [L55] var_1_8 = (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) + var_1_11) VAL [isInitial=1, last_1_var_1_1=128, stepLocal_0=325, stepLocal_1=325, stepLocal_2=650, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=-2147483647] [L62] COND FALSE !(var_1_15 > var_1_15) VAL [isInitial=1, last_1_var_1_1=128, stepLocal_0=325, stepLocal_1=325, stepLocal_2=650, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=-2147483647] [L100] RET step() [L101] CALL, EXPR property() [L91] EXPR (var_1_2 ? (var_1_1 == ((unsigned short int) (((((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) < 0 ) ? -((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) : ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))))) : (((var_1_3 / var_1_4) >= (((((last_1_var_1_1 * var_1_15)) < ((~ last_1_var_1_1))) ? ((last_1_var_1_1 * var_1_15)) : ((~ last_1_var_1_1))))) ? (var_1_1 == ((unsigned short int) var_1_4)) : (var_1_1 == ((unsigned short int) var_1_3)))) && ((var_1_15 <= (var_1_3 + var_1_1)) ? ((var_1_1 == (var_1_14 ^ var_1_15)) ? (var_1_8 == ((signed long int) (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) + var_1_11))) : (var_1_8 == ((signed long int) var_1_11))) : (var_1_8 == ((signed long int) var_1_10))) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=-2147483647] [L91] EXPR (var_1_15 <= (var_1_3 + var_1_1)) ? ((var_1_1 == (var_1_14 ^ var_1_15)) ? (var_1_8 == ((signed long int) (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) + var_1_11))) : (var_1_8 == ((signed long int) var_1_11))) : (var_1_8 == ((signed long int) var_1_10)) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=-2147483647] [L91] EXPR var_1_14 ^ var_1_15 VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=-2147483647] [L91] EXPR (var_1_15 <= (var_1_3 + var_1_1)) ? ((var_1_1 == (var_1_14 ^ var_1_15)) ? (var_1_8 == ((signed long int) (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) + var_1_11))) : (var_1_8 == ((signed long int) var_1_11))) : (var_1_8 == ((signed long int) var_1_10)) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=-2147483647] [L91] EXPR (var_1_2 ? (var_1_1 == ((unsigned short int) (((((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) < 0 ) ? -((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) : ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))))) : (((var_1_3 / var_1_4) >= (((((last_1_var_1_1 * var_1_15)) < ((~ last_1_var_1_1))) ? ((last_1_var_1_1 * var_1_15)) : ((~ last_1_var_1_1))))) ? (var_1_1 == ((unsigned short int) var_1_4)) : (var_1_1 == ((unsigned short int) var_1_3)))) && ((var_1_15 <= (var_1_3 + var_1_1)) ? ((var_1_1 == (var_1_14 ^ var_1_15)) ? (var_1_8 == ((signed long int) (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) + var_1_11))) : (var_1_8 == ((signed long int) var_1_11))) : (var_1_8 == ((signed long int) var_1_10))) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=-2147483647] [L91-L92] return (((((var_1_2 ? (var_1_1 == ((unsigned short int) (((((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) < 0 ) ? -((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) : ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))))) : (((var_1_3 / var_1_4) >= (((((last_1_var_1_1 * var_1_15)) < ((~ last_1_var_1_1))) ? ((last_1_var_1_1 * var_1_15)) : ((~ last_1_var_1_1))))) ? (var_1_1 == ((unsigned short int) var_1_4)) : (var_1_1 == ((unsigned short int) var_1_3)))) && ((var_1_15 <= (var_1_3 + var_1_1)) ? ((var_1_1 == (var_1_14 ^ var_1_15)) ? (var_1_8 == ((signed long int) (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) + var_1_11))) : (var_1_8 == ((signed long int) var_1_11))) : (var_1_8 == ((signed long int) var_1_10)))) && ((var_1_15 > var_1_15) ? (var_1_12 == ((signed long int) ((((var_1_11) < (var_1_10)) ? (var_1_11) : (var_1_10))))) : 1)) && (var_1_14 == ((signed short int) 200))) && (var_1_15 == ((signed char) var_1_16))) && (var_1_17 == ((signed long int) var_1_10)) ; [L101] RET, EXPR property() [L101] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=-2147483647] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=128, var_1_10=1, var_1_11=-2147483648, var_1_12=24, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=1, var_1_1=325, var_1_2=1, var_1_3=325, var_1_4=1, var_1_8=-2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 145.7s, OverallIterations: 21, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 76.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 1739 SdHoareTripleChecker+Valid, 41.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1729 mSDsluCounter, 4533 SdHoareTripleChecker+Invalid, 40.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3074 mSDsCounter, 134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2657 IncrementalHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 134 mSolverCounterUnsat, 1459 mSDtfsCounter, 2657 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2323 GetRequests, 2129 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 55.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=18, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 570 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 62.9s InterpolantComputationTime, 1937 NumberOfCodeBlocks, 1937 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2257 ConstructedInterpolants, 18 QuantifiedInterpolants, 17074 SizeOfPredicates, 143 NumberOfNonLiveVariables, 4439 ConjunctsInSsa, 210 ConjunctsInUnsatCore, 26 InterpolantComputations, 20 PerfectInterpolantSequences, 8001/8112 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: unable to determine feasibility of some traces [2023-12-19 11:06:09,630 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 11:06:09,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...