/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 05:09:56,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 05:09:56,943 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 05:09:56,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 05:09:56,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 05:09:56,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 05:09:56,973 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 05:09:56,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 05:09:56,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 05:09:56,974 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 05:09:56,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 05:09:56,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 05:09:56,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 05:09:56,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 05:09:56,975 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 05:09:56,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 05:09:56,975 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 05:09:56,976 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 05:09:56,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 05:09:56,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 05:09:56,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 05:09:56,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 05:09:56,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 05:09:56,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 05:09:56,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 05:09:56,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 05:09:56,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 05:09:56,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 05:09:56,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 05:09:56,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 05:09:56,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 05:09:56,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 05:09:56,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:09:56,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 05:09:56,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 05:09:56,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 05:09:56,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 05:09:56,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 05:09:56,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 05:09:56,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 05:09:56,987 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 05:09:56,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 05:09:56,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 05:09:56,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 05:09:57,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 05:09:57,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 05:09:57,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 05:09:57,198 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 05:09:57,198 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 05:09:57,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound50.c [2023-12-16 05:09:58,276 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 05:09:58,381 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 05:09:58,382 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound50.c [2023-12-16 05:09:58,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67120d512/01f72a9f8d3242a8b40d2485a7cb4f8c/FLAGdc695c0bb [2023-12-16 05:09:58,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67120d512/01f72a9f8d3242a8b40d2485a7cb4f8c [2023-12-16 05:09:58,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 05:09:58,398 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 05:09:58,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 05:09:58,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 05:09:58,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 05:09:58,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b001c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58, skipping insertion in model container [2023-12-16 05:09:58,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,416 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 05:09:58,514 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound50.c[538,551] [2023-12-16 05:09:58,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:09:58,548 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 05:09:58,558 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound50.c[538,551] [2023-12-16 05:09:58,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:09:58,572 INFO L206 MainTranslator]: Completed translation [2023-12-16 05:09:58,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58 WrapperNode [2023-12-16 05:09:58,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 05:09:58,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 05:09:58,574 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 05:09:58,574 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 05:09:58,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,614 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-12-16 05:09:58,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 05:09:58,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 05:09:58,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 05:09:58,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 05:09:58,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,626 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,633 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]. [2023-12-16 05:09:58,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,653 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 05:09:58,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 05:09:58,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 05:09:58,659 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 05:09:58,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (1/1) ... [2023-12-16 05:09:58,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:09:58,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:09:58,687 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) [2023-12-16 05:09:58,704 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 [2023-12-16 05:09:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 05:09:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 05:09:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 05:09:58,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 05:09:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 05:09:58,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 05:09:58,776 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 05:09:58,777 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 05:09:58,889 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 05:09:58,904 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 05:09:58,904 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 05:09:58,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:09:58 BoogieIcfgContainer [2023-12-16 05:09:58,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 05:09:58,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 05:09:58,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 05:09:58,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 05:09:58,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:09:58" (1/3) ... [2023-12-16 05:09:58,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4624980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:09:58, skipping insertion in model container [2023-12-16 05:09:58,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:09:58" (2/3) ... [2023-12-16 05:09:58,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4624980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:09:58, skipping insertion in model container [2023-12-16 05:09:58,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:09:58" (3/3) ... [2023-12-16 05:09:58,909 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound50.c [2023-12-16 05:09:58,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 05:09:58,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 05:09:58,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 05:09:58,962 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;@6b8bf427, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 05:09:58,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 05:09:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 05:09:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 05:09:58,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:09:58,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:09:58,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:09:58,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:09:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash 65649153, now seen corresponding path program 1 times [2023-12-16 05:09:58,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:09:58,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594722359] [2023-12-16 05:09:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:09:58,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:09:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:09:59,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:09:59,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594722359] [2023-12-16 05:09:59,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 05:09:59,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033244338] [2023-12-16 05:09:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:09:59,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:09:59,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:09:59,076 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) [2023-12-16 05:09:59,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 05:09:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:09:59,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 05:09:59,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:09:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 05:09:59,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:09:59,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033244338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:09:59,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:09:59,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 05:09:59,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929597803] [2023-12-16 05:09:59,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:09:59,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 05:09:59,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:09:59,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 05:09:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 05:09:59,173 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 05:09:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:09:59,191 INFO L93 Difference]: Finished difference Result 48 states and 82 transitions. [2023-12-16 05:09:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 05:09:59,205 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 05:09:59,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:09:59,210 INFO L225 Difference]: With dead ends: 48 [2023-12-16 05:09:59,210 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 05:09:59,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 05:09:59,214 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:09:59,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:09:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 05:09:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-16 05:09:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 05:09:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2023-12-16 05:09:59,244 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2023-12-16 05:09:59,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:09:59,244 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2023-12-16 05:09:59,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 05:09:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2023-12-16 05:09:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 05:09:59,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:09:59,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:09:59,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 05:09:59,450 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 [2023-12-16 05:09:59,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:09:59,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:09:59,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1205755883, now seen corresponding path program 1 times [2023-12-16 05:09:59,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:09:59,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118141507] [2023-12-16 05:09:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:09:59,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:09:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:09:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 05:09:59,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:09:59,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118141507] [2023-12-16 05:09:59,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118141507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:09:59,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:09:59,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 05:09:59,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021634003] [2023-12-16 05:09:59,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:09:59,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 05:09:59,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:09:59,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 05:09:59,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:09:59,602 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 05:09:59,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:09:59,666 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2023-12-16 05:09:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 05:09:59,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 05:09:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:09:59,667 INFO L225 Difference]: With dead ends: 37 [2023-12-16 05:09:59,667 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 05:09:59,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 05:09:59,668 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:09:59,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 96 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:09:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 05:09:59,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2023-12-16 05:09:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 05:09:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-12-16 05:09:59,691 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2023-12-16 05:09:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:09:59,691 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-12-16 05:09:59,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 05:09:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-12-16 05:09:59,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 05:09:59,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:09:59,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:09:59,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 05:09:59,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:09:59,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:09:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2004332404, now seen corresponding path program 1 times [2023-12-16 05:09:59,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:09:59,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142304358] [2023-12-16 05:09:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:09:59,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:09:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:09:59,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:09:59,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142304358] [2023-12-16 05:09:59,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 05:09:59,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275112763] [2023-12-16 05:09:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:09:59,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:09:59,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:09:59,710 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) [2023-12-16 05:09:59,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 05:09:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:09:59,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 05:09:59,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:09:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 05:09:59,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:09:59,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275112763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:09:59,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:09:59,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 05:09:59,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908264877] [2023-12-16 05:09:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:09:59,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 05:09:59,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:09:59,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 05:09:59,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 05:09:59,793 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 05:09:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:09:59,817 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2023-12-16 05:09:59,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 05:09:59,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-16 05:09:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:09:59,819 INFO L225 Difference]: With dead ends: 43 [2023-12-16 05:09:59,819 INFO L226 Difference]: Without dead ends: 29 [2023-12-16 05:09:59,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 05:09:59,821 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:09:59,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:09:59,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-16 05:09:59,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-16 05:09:59,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 05:09:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2023-12-16 05:09:59,826 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 11 [2023-12-16 05:09:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:09:59,826 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2023-12-16 05:09:59,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 05:09:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2023-12-16 05:09:59,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 05:09:59,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:09:59,826 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:09:59,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 05:10:00,031 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,SelfDestructingSolverStorable2 [2023-12-16 05:10:00,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:00,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:00,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1962237034, now seen corresponding path program 1 times [2023-12-16 05:10:00,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:00,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750119512] [2023-12-16 05:10:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:00,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:10:00,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 05:10:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:10:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 05:10:00,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:10:00,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750119512] [2023-12-16 05:10:00,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750119512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:10:00,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:10:00,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 05:10:00,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793962478] [2023-12-16 05:10:00,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:10:00,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 05:10:00,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:10:00,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 05:10:00,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:10:00,206 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 05:10:00,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:10:00,271 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2023-12-16 05:10:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 05:10:00,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-16 05:10:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:10:00,274 INFO L225 Difference]: With dead ends: 43 [2023-12-16 05:10:00,274 INFO L226 Difference]: Without dead ends: 41 [2023-12-16 05:10:00,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 05:10:00,275 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:10:00,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:10:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-16 05:10:00,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2023-12-16 05:10:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 05:10:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-16 05:10:00,291 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 14 [2023-12-16 05:10:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:10:00,292 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-16 05:10:00,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 05:10:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-16 05:10:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 05:10:00,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:10:00,293 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:10:00,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 05:10:00,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:00,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:00,297 INFO L85 PathProgramCache]: Analyzing trace with hash 608183541, now seen corresponding path program 1 times [2023-12-16 05:10:00,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:00,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040902663] [2023-12-16 05:10:00,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:00,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:00,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:10:00,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713743693] [2023-12-16 05:10:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:00,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:00,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:10:00,325 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) [2023-12-16 05:10:00,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 05:10:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:10:00,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 05:10:00,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:10:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 05:10:00,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:10:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 05:10:00,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:10:00,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040902663] [2023-12-16 05:10:00,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:10:00,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713743693] [2023-12-16 05:10:00,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713743693] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:10:00,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 05:10:00,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-16 05:10:00,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807257258] [2023-12-16 05:10:00,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 05:10:00,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 05:10:00,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:10:00,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 05:10:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 05:10:00,639 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 05:10:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:10:01,160 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2023-12-16 05:10:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:10:01,160 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-12-16 05:10:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:10:01,162 INFO L225 Difference]: With dead ends: 74 [2023-12-16 05:10:01,162 INFO L226 Difference]: Without dead ends: 58 [2023-12-16 05:10:01,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-16 05:10:01,163 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 05:10:01,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 106 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 05:10:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-16 05:10:01,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2023-12-16 05:10:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 37 states have internal predecessors, (43), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 05:10:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2023-12-16 05:10:01,174 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 19 [2023-12-16 05:10:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:10:01,174 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2023-12-16 05:10:01,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 05:10:01,174 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2023-12-16 05:10:01,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 05:10:01,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:10:01,175 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:10:01,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 05:10:01,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:01,380 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:01,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash 560729168, now seen corresponding path program 1 times [2023-12-16 05:10:01,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:01,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663783259] [2023-12-16 05:10:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:01,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:01,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:10:01,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247874180] [2023-12-16 05:10:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:01,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:01,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:10:01,389 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) [2023-12-16 05:10:01,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 05:10:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:10:01,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 05:10:01,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:10:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 05:10:01,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:10:01,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:10:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663783259] [2023-12-16 05:10:01,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:10:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247874180] [2023-12-16 05:10:01,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247874180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:10:01,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:10:01,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 05:10:01,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933700864] [2023-12-16 05:10:01,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:10:01,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 05:10:01,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:10:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 05:10:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:10:01,486 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 05:10:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:10:01,508 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2023-12-16 05:10:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 05:10:01,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-12-16 05:10:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:10:01,509 INFO L225 Difference]: With dead ends: 71 [2023-12-16 05:10:01,509 INFO L226 Difference]: Without dead ends: 64 [2023-12-16 05:10:01,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:10:01,510 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:10:01,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 105 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:10:01,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-16 05:10:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2023-12-16 05:10:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.2) internal successors, (48), 43 states have internal predecessors, (48), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 05:10:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2023-12-16 05:10:01,519 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 27 [2023-12-16 05:10:01,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:10:01,519 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2023-12-16 05:10:01,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 05:10:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2023-12-16 05:10:01,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 05:10:01,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:10:01,520 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:10:01,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 05:10:01,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:01,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:01,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash 562457046, now seen corresponding path program 1 times [2023-12-16 05:10:01,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535593855] [2023-12-16 05:10:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:01,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:01,731 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:10:01,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663895512] [2023-12-16 05:10:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:01,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:01,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:10:01,732 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) [2023-12-16 05:10:01,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 05:10:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:10:01,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 05:10:01,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:10:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 05:10:01,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:10:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 05:10:02,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:10:02,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535593855] [2023-12-16 05:10:02,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:10:02,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663895512] [2023-12-16 05:10:02,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663895512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:10:02,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 05:10:02,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-16 05:10:02,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545018188] [2023-12-16 05:10:02,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 05:10:02,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 05:10:02,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:10:02,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 05:10:02,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:10:02,138 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 05:10:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:10:02,316 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2023-12-16 05:10:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 05:10:02,316 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 27 [2023-12-16 05:10:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:10:02,317 INFO L225 Difference]: With dead ends: 75 [2023-12-16 05:10:02,317 INFO L226 Difference]: Without dead ends: 67 [2023-12-16 05:10:02,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-16 05:10:02,318 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:10:02,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 142 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 05:10:02,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-16 05:10:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2023-12-16 05:10:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 46 states have internal predecessors, (50), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 05:10:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2023-12-16 05:10:02,328 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 27 [2023-12-16 05:10:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:10:02,328 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2023-12-16 05:10:02,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 05:10:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2023-12-16 05:10:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 05:10:02,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:10:02,329 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:10:02,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 05:10:02,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:02,533 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:02,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:02,534 INFO L85 PathProgramCache]: Analyzing trace with hash 177821141, now seen corresponding path program 1 times [2023-12-16 05:10:02,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:02,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735940950] [2023-12-16 05:10:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:02,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:02,541 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:10:02,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644251058] [2023-12-16 05:10:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:02,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:02,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:10:02,542 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) [2023-12-16 05:10:02,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 05:10:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:10:02,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 05:10:02,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:10:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 05:10:02,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:10:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 05:10:02,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:10:02,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735940950] [2023-12-16 05:10:02,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:10:02,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644251058] [2023-12-16 05:10:02,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644251058] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:10:02,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 05:10:02,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-16 05:10:02,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281709967] [2023-12-16 05:10:02,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 05:10:02,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 05:10:02,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:10:02,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 05:10:02,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 05:10:02,657 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 05:10:02,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:10:02,764 INFO L93 Difference]: Finished difference Result 155 states and 183 transitions. [2023-12-16 05:10:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 05:10:02,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 29 [2023-12-16 05:10:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:10:02,766 INFO L225 Difference]: With dead ends: 155 [2023-12-16 05:10:02,766 INFO L226 Difference]: Without dead ends: 125 [2023-12-16 05:10:02,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 05:10:02,767 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:10:02,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 108 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 05:10:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-16 05:10:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2023-12-16 05:10:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 83 states have internal predecessors, (90), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-16 05:10:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2023-12-16 05:10:02,785 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 29 [2023-12-16 05:10:02,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:10:02,785 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2023-12-16 05:10:02,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 05:10:02,785 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2023-12-16 05:10:02,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 05:10:02,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:10:02,786 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:10:02,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 05:10:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:02,991 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:02,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1287430247, now seen corresponding path program 1 times [2023-12-16 05:10:02,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:02,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925638574] [2023-12-16 05:10:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:02,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:02,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:10:02,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661623992] [2023-12-16 05:10:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:02,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:02,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:10:02,999 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) [2023-12-16 05:10:03,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 05:10:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:10:03,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 05:10:03,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:10:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 05:10:03,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:10:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 05:10:03,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:10:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925638574] [2023-12-16 05:10:03,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:10:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661623992] [2023-12-16 05:10:03,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661623992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:10:03,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 05:10:03,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-16 05:10:03,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598075870] [2023-12-16 05:10:03,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 05:10:03,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 05:10:03,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:10:03,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 05:10:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 05:10:03,167 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-16 05:10:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:10:03,357 INFO L93 Difference]: Finished difference Result 223 states and 262 transitions. [2023-12-16 05:10:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 05:10:03,358 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 45 [2023-12-16 05:10:03,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:10:03,359 INFO L225 Difference]: With dead ends: 223 [2023-12-16 05:10:03,359 INFO L226 Difference]: Without dead ends: 207 [2023-12-16 05:10:03,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:10:03,360 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 91 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:10:03,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 174 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 05:10:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-16 05:10:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 200. [2023-12-16 05:10:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 133 states have (on average 1.1578947368421053) internal successors, (154), 143 states have internal predecessors, (154), 41 states have call successors, (41), 26 states have call predecessors, (41), 25 states have return successors, (36), 30 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 05:10:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 231 transitions. [2023-12-16 05:10:03,381 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 231 transitions. Word has length 45 [2023-12-16 05:10:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:10:03,381 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 231 transitions. [2023-12-16 05:10:03,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-16 05:10:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 231 transitions. [2023-12-16 05:10:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 05:10:03,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:10:03,383 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:10:03,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 05:10:03,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:03,587 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:03,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:03,588 INFO L85 PathProgramCache]: Analyzing trace with hash -146860473, now seen corresponding path program 1 times [2023-12-16 05:10:03,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:03,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768645565] [2023-12-16 05:10:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:03,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:03,593 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:10:03,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050908658] [2023-12-16 05:10:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:03,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:03,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:10:03,595 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) [2023-12-16 05:10:03,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 05:10:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:10:03,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 05:10:03,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:10:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 05:10:03,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:10:03,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:10:03,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768645565] [2023-12-16 05:10:03,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:10:03,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050908658] [2023-12-16 05:10:03,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050908658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:10:03,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:10:03,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 05:10:03,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364570334] [2023-12-16 05:10:03,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:10:03,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 05:10:03,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:10:03,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 05:10:03,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 05:10:03,663 INFO L87 Difference]: Start difference. First operand 200 states and 231 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 05:10:03,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:10:03,699 INFO L93 Difference]: Finished difference Result 222 states and 256 transitions. [2023-12-16 05:10:03,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 05:10:03,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-12-16 05:10:03,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:10:03,700 INFO L225 Difference]: With dead ends: 222 [2023-12-16 05:10:03,700 INFO L226 Difference]: Without dead ends: 202 [2023-12-16 05:10:03,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 05:10:03,701 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:10:03,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 82 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:10:03,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-16 05:10:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2023-12-16 05:10:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 134 states have (on average 1.1492537313432836) internal successors, (154), 141 states have internal predecessors, (154), 40 states have call successors, (40), 25 states have call predecessors, (40), 25 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 05:10:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 230 transitions. [2023-12-16 05:10:03,720 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 230 transitions. Word has length 56 [2023-12-16 05:10:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:10:03,720 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 230 transitions. [2023-12-16 05:10:03,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 05:10:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 230 transitions. [2023-12-16 05:10:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 05:10:03,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:10:03,721 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:10:03,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 05:10:03,926 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,SelfDestructingSolverStorable9 [2023-12-16 05:10:03,926 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:03,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:03,927 INFO L85 PathProgramCache]: Analyzing trace with hash -293585845, now seen corresponding path program 1 times [2023-12-16 05:10:03,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:03,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75021307] [2023-12-16 05:10:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:03,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:03,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:10:03,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177516928] [2023-12-16 05:10:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:03,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:03,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:10:03,950 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) [2023-12-16 05:10:03,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 05:10:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:10:04,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 05:10:04,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:10:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 05:10:04,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:10:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 05:10:07,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:10:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75021307] [2023-12-16 05:10:07,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:10:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177516928] [2023-12-16 05:10:07,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177516928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:10:07,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 05:10:07,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2023-12-16 05:10:07,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183012135] [2023-12-16 05:10:07,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 05:10:07,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 05:10:07,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:10:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 05:10:07,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-12-16 05:10:07,911 INFO L87 Difference]: Start difference. First operand 200 states and 230 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-16 05:10:11,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 05:10:15,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 05:10:19,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 05:10:23,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 05:10:25,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 05:10:28,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 05:10:34,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 05:10:36,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 05:10:36,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:10:36,987 INFO L93 Difference]: Finished difference Result 333 states and 408 transitions. [2023-12-16 05:10:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 05:10:36,987 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 59 [2023-12-16 05:10:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:10:36,989 INFO L225 Difference]: With dead ends: 333 [2023-12-16 05:10:36,989 INFO L226 Difference]: Without dead ends: 272 [2023-12-16 05:10:36,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2023-12-16 05:10:36,990 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 100 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 91 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2023-12-16 05:10:36,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 337 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 309 Invalid, 4 Unknown, 0 Unchecked, 26.8s Time] [2023-12-16 05:10:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-16 05:10:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2023-12-16 05:10:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 166 states have (on average 1.1686746987951808) internal successors, (194), 174 states have internal predecessors, (194), 48 states have call successors, (48), 29 states have call predecessors, (48), 28 states have return successors, (44), 39 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 05:10:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 286 transitions. [2023-12-16 05:10:37,025 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 286 transitions. Word has length 59 [2023-12-16 05:10:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:10:37,025 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 286 transitions. [2023-12-16 05:10:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-16 05:10:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 286 transitions. [2023-12-16 05:10:37,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 05:10:37,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:10:37,028 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:10:37,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 05:10:37,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:37,229 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:37,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1181721499, now seen corresponding path program 1 times [2023-12-16 05:10:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:37,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798502011] [2023-12-16 05:10:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:37,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:10:37,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774776226] [2023-12-16 05:10:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:37,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:10:37,242 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) [2023-12-16 05:10:37,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 05:10:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:10:37,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-16 05:10:37,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:10:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 05:10:37,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:10:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 05:10:38,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:10:38,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798502011] [2023-12-16 05:10:38,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:10:38,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774776226] [2023-12-16 05:10:38,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774776226] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:10:38,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 05:10:38,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-12-16 05:10:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886837489] [2023-12-16 05:10:38,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 05:10:38,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 05:10:38,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:10:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 05:10:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-16 05:10:38,927 INFO L87 Difference]: Start difference. First operand 243 states and 286 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 10 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2023-12-16 05:10:40,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:10:40,984 INFO L93 Difference]: Finished difference Result 370 states and 454 transitions. [2023-12-16 05:10:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 05:10:40,986 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 10 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 70 [2023-12-16 05:10:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:10:40,989 INFO L225 Difference]: With dead ends: 370 [2023-12-16 05:10:40,989 INFO L226 Difference]: Without dead ends: 293 [2023-12-16 05:10:40,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2023-12-16 05:10:40,991 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 63 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 05:10:40,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 511 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 05:10:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-16 05:10:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 270. [2023-12-16 05:10:41,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 184 states have (on average 1.1576086956521738) internal successors, (213), 190 states have internal predecessors, (213), 54 states have call successors, (54), 31 states have call predecessors, (54), 31 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-16 05:10:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 318 transitions. [2023-12-16 05:10:41,057 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 318 transitions. Word has length 70 [2023-12-16 05:10:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:10:41,057 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 318 transitions. [2023-12-16 05:10:41,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 10 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2023-12-16 05:10:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 318 transitions. [2023-12-16 05:10:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 05:10:41,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:10:41,058 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:10:41,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 05:10:41,263 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,SelfDestructingSolverStorable11 [2023-12-16 05:10:41,263 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:41,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1368309367, now seen corresponding path program 2 times [2023-12-16 05:10:41,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:41,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211769083] [2023-12-16 05:10:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:41,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:41,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:10:41,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872560972] [2023-12-16 05:10:41,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 05:10:41,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:41,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:10:41,274 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) [2023-12-16 05:10:41,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 05:10:41,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 05:10:41,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 05:10:41,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 05:10:41,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:10:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 05:10:41,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:10:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 05:10:41,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:10:41,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211769083] [2023-12-16 05:10:41,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:10:41,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872560972] [2023-12-16 05:10:41,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872560972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:10:41,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 05:10:41,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2023-12-16 05:10:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534402139] [2023-12-16 05:10:41,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 05:10:41,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 05:10:41,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:10:41,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 05:10:41,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:10:41,405 INFO L87 Difference]: Start difference. First operand 270 states and 318 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-16 05:10:41,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:10:41,493 INFO L93 Difference]: Finished difference Result 307 states and 366 transitions. [2023-12-16 05:10:41,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 05:10:41,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 73 [2023-12-16 05:10:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:10:41,498 INFO L225 Difference]: With dead ends: 307 [2023-12-16 05:10:41,498 INFO L226 Difference]: Without dead ends: 228 [2023-12-16 05:10:41,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:10:41,499 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:10:41,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 05:10:41,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-16 05:10:41,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2023-12-16 05:10:41,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 155 states have (on average 1.1483870967741936) internal successors, (178), 160 states have internal predecessors, (178), 45 states have call successors, (45), 27 states have call predecessors, (45), 27 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 05:10:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 266 transitions. [2023-12-16 05:10:41,557 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 266 transitions. Word has length 73 [2023-12-16 05:10:41,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:10:41,557 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 266 transitions. [2023-12-16 05:10:41,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-16 05:10:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 266 transitions. [2023-12-16 05:10:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 05:10:41,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:10:41,558 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 05:10:41,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-16 05:10:41,762 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,SelfDestructingSolverStorable12 [2023-12-16 05:10:41,762 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:10:41,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:10:41,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1566685696, now seen corresponding path program 3 times [2023-12-16 05:10:41,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:10:41,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482016270] [2023-12-16 05:10:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:10:41,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:10:41,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:10:41,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695939555] [2023-12-16 05:10:41,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 05:10:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:10:41,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:10:41,771 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) [2023-12-16 05:10:41,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 05:10:41,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 05:10:41,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 05:10:41,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 05:10:41,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:10:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 61 proven. 31 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-16 05:10:42,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:11:07,150 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-16 05:11:14,435 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 05:11:14,444 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 05:11:15,410 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 05:11:15,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 05:11:15,466 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 0 [2023-12-16 05:11:15,611 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,SelfDestructingSolverStorable13 [2023-12-16 05:11:15,611 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 92 with TraceHistMax 14,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-3-3-3-2-1 context. [2023-12-16 05:11:15,615 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:11:15,616 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 05:11:15,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:11:15 BoogieIcfgContainer [2023-12-16 05:11:15,618 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 05:11:15,618 INFO L158 Benchmark]: Toolchain (without parser) took 77220.43ms. Allocated memory was 291.5MB in the beginning and 350.2MB in the end (delta: 58.7MB). Free memory was 244.7MB in the beginning and 183.9MB in the end (delta: 60.7MB). Peak memory consumption was 120.1MB. Max. memory is 8.0GB. [2023-12-16 05:11:15,618 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 242.2MB. Free memory is still 190.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 05:11:15,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.01ms. Allocated memory is still 291.5MB. Free memory was 244.3MB in the beginning and 233.1MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 05:11:15,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.11ms. Allocated memory is still 291.5MB. Free memory was 233.1MB in the beginning and 231.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 05:11:15,619 INFO L158 Benchmark]: Boogie Preprocessor took 43.47ms. Allocated memory is still 291.5MB. Free memory was 231.4MB in the beginning and 229.6MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 05:11:15,619 INFO L158 Benchmark]: RCFGBuilder took 245.86ms. Allocated memory is still 291.5MB. Free memory was 229.6MB in the beginning and 217.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 05:11:15,619 INFO L158 Benchmark]: TraceAbstraction took 76712.02ms. Allocated memory was 291.5MB in the beginning and 350.2MB in the end (delta: 58.7MB). Free memory was 216.7MB in the beginning and 183.9MB in the end (delta: 32.8MB). Peak memory consumption was 91.8MB. Max. memory is 8.0GB. [2023-12-16 05:11:15,620 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 242.2MB. Free memory is still 190.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 175.01ms. Allocated memory is still 291.5MB. Free memory was 244.3MB in the beginning and 233.1MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.11ms. Allocated memory is still 291.5MB. Free memory was 233.1MB in the beginning and 231.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.47ms. Allocated memory is still 291.5MB. Free memory was 231.4MB in the beginning and 229.6MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 245.86ms. Allocated memory is still 291.5MB. Free memory was 229.6MB in the beginning and 217.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 76712.02ms. Allocated memory was 291.5MB in the beginning and 350.2MB in the end (delta: 58.7MB). Free memory was 216.7MB in the beginning and 183.9MB in the end (delta: 32.8MB). Peak memory consumption was 91.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while NwaCegarLoop was analyzing trace of length 92 with TraceHistMax 14,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-3-3-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 76.7s, OverallIterations: 14, TraceHistogramMax: 14, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 32.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 436 SdHoareTripleChecker+Valid, 28.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 2002 SdHoareTripleChecker+Invalid, 28.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1590 mSDsCounter, 223 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1171 IncrementalHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 223 mSolverCounterUnsat, 412 mSDtfsCounter, 1171 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 776 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270occurred in iteration=12, InterpolantAutomatonStates: 111, 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, 13 MinimizatonAttempts, 89 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 468 NumberOfCodeBlocks, 468 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 750 ConstructedInterpolants, 0 QuantifiedInterpolants, 5501 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1200 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 1398/1534 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown