/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/cohendiv-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 05:47:01,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 05:47:01,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 05:47:01,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 05:47:01,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 05:47:01,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 05:47:01,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 05:47:01,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 05:47:01,978 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 05:47:01,981 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 05:47:01,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 05:47:01,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 05:47:01,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 05:47:01,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 05:47:01,983 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 05:47:01,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 05:47:01,983 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 05:47:01,983 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 05:47:01,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 05:47:01,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 05:47:01,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 05:47:01,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 05:47:01,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 05:47:01,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 05:47:01,985 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 05:47:01,985 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 05:47:01,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 05:47:01,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 05:47:01,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 05:47:01,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 05:47:01,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 05:47:01,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 05:47:01,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 05:47:01,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 05:47:01,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 05:47:01,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 05:47:01,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 05:47:01,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 05:47:01,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 05:47:01,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 05:47:01,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 05:47:01,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 05:47:01,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 05:47:01,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 05:47:02,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 05:47:02,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 05:47:02,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 05:47:02,177 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 05:47:02,177 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 05:47:02,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2023-12-21 05:47:03,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 05:47:03,385 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 05:47:03,385 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2023-12-21 05:47:03,390 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88c2a392d/83ced68cc3cd4ffa9bfd911e37a92046/FLAG0056bb287 [2023-12-21 05:47:03,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88c2a392d/83ced68cc3cd4ffa9bfd911e37a92046 [2023-12-21 05:47:03,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 05:47:03,404 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 05:47:03,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 05:47:03,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 05:47:03,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 05:47:03,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0a356a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03, skipping insertion in model container [2023-12-21 05:47:03,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,426 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 05:47:03,512 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/cohendiv-ll_unwindbound10.c[576,589] [2023-12-21 05:47:03,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 05:47:03,529 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 05:47:03,537 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/cohendiv-ll_unwindbound10.c[576,589] [2023-12-21 05:47:03,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 05:47:03,549 INFO L206 MainTranslator]: Completed translation [2023-12-21 05:47:03,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03 WrapperNode [2023-12-21 05:47:03,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 05:47:03,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 05:47:03,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 05:47:03,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 05:47:03,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,571 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-12-21 05:47:03,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 05:47:03,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 05:47:03,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 05:47:03,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 05:47:03,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,585 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]. [2023-12-21 05:47:03,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 05:47:03,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 05:47:03,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 05:47:03,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 05:47:03,592 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (1/1) ... [2023-12-21 05:47:03,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 05:47:03,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:03,668 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) [2023-12-21 05:47:03,684 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 [2023-12-21 05:47:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 05:47:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 05:47:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 05:47:03,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 05:47:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 05:47:03,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 05:47:03,752 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 05:47:03,754 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 05:47:03,892 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 05:47:03,916 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 05:47:03,917 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 05:47:03,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:47:03 BoogieIcfgContainer [2023-12-21 05:47:03,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 05:47:03,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 05:47:03,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 05:47:03,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 05:47:03,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:47:03" (1/3) ... [2023-12-21 05:47:03,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3ec0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:47:03, skipping insertion in model container [2023-12-21 05:47:03,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:47:03" (2/3) ... [2023-12-21 05:47:03,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3ec0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:47:03, skipping insertion in model container [2023-12-21 05:47:03,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:47:03" (3/3) ... [2023-12-21 05:47:03,926 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound10.c [2023-12-21 05:47:03,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 05:47:03,937 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 05:47:03,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 05:47:03,983 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;@79a3afe9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 05:47:03,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 05:47:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 17 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) [2023-12-21 05:47:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 05:47:03,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:03,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:03,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:03,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash 753274055, now seen corresponding path program 1 times [2023-12-21 05:47:04,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:04,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361551282] [2023-12-21 05:47:04,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:04,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:04,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:04,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361551282] [2023-12-21 05:47:04,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 05:47:04,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292670201] [2023-12-21 05:47:04,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:04,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:04,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:04,088 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) [2023-12-21 05:47:04,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 05:47:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:04,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 05:47:04,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:47:04,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:47:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292670201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:47:04,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:47:04,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 05:47:04,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217769320] [2023-12-21 05:47:04,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:04,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 05:47:04,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:04,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 05:47:04,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 05:47:04,239 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 17 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-12-21 05:47:04,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:04,272 INFO L93 Difference]: Finished difference Result 50 states and 82 transitions. [2023-12-21 05:47:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 05:47:04,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 8 [2023-12-21 05:47:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:04,280 INFO L225 Difference]: With dead ends: 50 [2023-12-21 05:47:04,280 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 05:47:04,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 05:47:04,286 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 [2023-12-21 05:47:04,287 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] [2023-12-21 05:47:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 05:47:04,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-21 05:47:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 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) [2023-12-21 05:47:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2023-12-21 05:47:04,329 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 8 [2023-12-21 05:47:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:04,330 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2023-12-21 05:47:04,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-12-21 05:47:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2023-12-21 05:47:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 05:47:04,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:04,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:04,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 05:47:04,536 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 [2023-12-21 05:47:04,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:04,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash -79941692, now seen corresponding path program 1 times [2023-12-21 05:47:04,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:04,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276306664] [2023-12-21 05:47:04,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:04,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:04,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557860510] [2023-12-21 05:47:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:04,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:04,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:04,569 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) [2023-12-21 05:47:04,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 05:47:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:04,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 05:47:04,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:47:04,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:47:04,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276306664] [2023-12-21 05:47:04,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557860510] [2023-12-21 05:47:04,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557860510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:47:04,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:47:04,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 05:47:04,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441657335] [2023-12-21 05:47:04,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:04,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 05:47:04,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:04,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 05:47:04,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 05:47:04,656 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2023-12-21 05:47:04,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:04,669 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2023-12-21 05:47:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 05:47:04,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2023-12-21 05:47:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:04,670 INFO L225 Difference]: With dead ends: 33 [2023-12-21 05:47:04,670 INFO L226 Difference]: Without dead ends: 26 [2023-12-21 05:47:04,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 05:47:04,671 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 [2023-12-21 05:47:04,671 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] [2023-12-21 05:47:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-21 05:47:04,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-21 05:47:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 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) [2023-12-21 05:47:04,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-12-21 05:47:04,676 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 9 [2023-12-21 05:47:04,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:04,676 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-12-21 05:47:04,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2023-12-21 05:47:04,676 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-12-21 05:47:04,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 05:47:04,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:04,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:04,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 05:47:04,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 05:47:04,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:04,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:04,882 INFO L85 PathProgramCache]: Analyzing trace with hash -78452142, now seen corresponding path program 1 times [2023-12-21 05:47:04,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:04,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401019932] [2023-12-21 05:47:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:04,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:04,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:04,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153877300] [2023-12-21 05:47:04,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:04,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:04,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:04,914 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) [2023-12-21 05:47:04,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 05:47:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:04,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 05:47:04,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:47:05,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:47:05,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:05,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401019932] [2023-12-21 05:47:05,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:05,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153877300] [2023-12-21 05:47:05,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153877300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:47:05,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:47:05,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 05:47:05,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434383137] [2023-12-21 05:47:05,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:05,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 05:47:05,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:05,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 05:47:05,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 05:47:05,086 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 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) [2023-12-21 05:47:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:05,177 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-12-21 05:47:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 05:47:05,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 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 [2023-12-21 05:47:05,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:05,179 INFO L225 Difference]: With dead ends: 36 [2023-12-21 05:47:05,179 INFO L226 Difference]: Without dead ends: 34 [2023-12-21 05:47:05,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 05:47:05,180 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:05,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 107 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:47:05,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-21 05:47:05,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2023-12-21 05:47:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-21 05:47:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-12-21 05:47:05,186 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 9 [2023-12-21 05:47:05,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:05,191 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-12-21 05:47:05,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 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) [2023-12-21 05:47:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-12-21 05:47:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-21 05:47:05,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:05,192 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:05,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 05:47:05,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:05,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:05,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:05,399 INFO L85 PathProgramCache]: Analyzing trace with hash 921583882, now seen corresponding path program 1 times [2023-12-21 05:47:05,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:05,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25588311] [2023-12-21 05:47:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:05,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:05,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:05,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25081717] [2023-12-21 05:47:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:05,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:05,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:05,434 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) [2023-12-21 05:47:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:05,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 05:47:05,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 05:47:05,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:47:05,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:47:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:47:05,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25588311] [2023-12-21 05:47:05,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25081717] [2023-12-21 05:47:05,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25081717] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 05:47:05,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 05:47:05,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2023-12-21 05:47:05,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124974512] [2023-12-21 05:47:05,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:05,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 05:47:05,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:05,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 05:47:05,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-21 05:47:05,650 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 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) [2023-12-21 05:47:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:05,708 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2023-12-21 05:47:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 05:47:05,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 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 [2023-12-21 05:47:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:05,710 INFO L225 Difference]: With dead ends: 49 [2023-12-21 05:47:05,710 INFO L226 Difference]: Without dead ends: 46 [2023-12-21 05:47:05,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 05:47:05,715 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:05,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 118 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:47:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-21 05:47:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2023-12-21 05:47:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 05:47:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2023-12-21 05:47:05,726 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 14 [2023-12-21 05:47:05,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:05,726 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2023-12-21 05:47:05,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 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) [2023-12-21 05:47:05,726 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2023-12-21 05:47:05,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 05:47:05,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:05,727 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:05,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 05:47:05,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:05,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:05,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:05,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1948965363, now seen corresponding path program 1 times [2023-12-21 05:47:05,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:05,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920057507] [2023-12-21 05:47:05,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:05,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:05,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:05,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679821408] [2023-12-21 05:47:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:05,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:05,938 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) [2023-12-21 05:47:05,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 05:47:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:05,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 05:47:05,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 05:47:06,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:47:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:47:06,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:06,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920057507] [2023-12-21 05:47:06,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679821408] [2023-12-21 05:47:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679821408] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 05:47:06,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 05:47:06,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-21 05:47:06,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645198474] [2023-12-21 05:47:06,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:06,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 05:47:06,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:06,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 05:47:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-21 05:47:06,081 INFO L87 Difference]: Start difference. First operand 45 states and 60 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 05:47:06,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:06,135 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2023-12-21 05:47:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 05:47:06,135 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-21 05:47:06,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:06,137 INFO L225 Difference]: With dead ends: 51 [2023-12-21 05:47:06,137 INFO L226 Difference]: Without dead ends: 49 [2023-12-21 05:47:06,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 05:47:06,138 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:06,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 69 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:47:06,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-21 05:47:06,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-21 05:47:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 05:47:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2023-12-21 05:47:06,159 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 22 [2023-12-21 05:47:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:06,160 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2023-12-21 05:47:06,160 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 05:47:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2023-12-21 05:47:06,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 05:47:06,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:06,161 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:06,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 05:47:06,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:06,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:06,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1914041250, now seen corresponding path program 1 times [2023-12-21 05:47:06,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:06,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744303493] [2023-12-21 05:47:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:06,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:06,375 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:06,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086715098] [2023-12-21 05:47:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:06,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:06,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:06,384 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) [2023-12-21 05:47:06,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 05:47:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:06,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 05:47:06,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:47:06,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:47:06,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744303493] [2023-12-21 05:47:06,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086715098] [2023-12-21 05:47:06,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086715098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:47:06,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:47:06,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 05:47:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370134501] [2023-12-21 05:47:06,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:06,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 05:47:06,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:06,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 05:47:06,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 05:47:06,450 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 05:47:06,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:06,472 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2023-12-21 05:47:06,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 05:47:06,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-12-21 05:47:06,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:06,473 INFO L225 Difference]: With dead ends: 80 [2023-12-21 05:47:06,473 INFO L226 Difference]: Without dead ends: 55 [2023-12-21 05:47:06,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 05:47:06,474 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:06,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:47:06,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-21 05:47:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-21 05:47:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 37 states have internal predecessors, (43), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 05:47:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2023-12-21 05:47:06,482 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 25 [2023-12-21 05:47:06,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:06,482 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2023-12-21 05:47:06,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 05:47:06,483 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2023-12-21 05:47:06,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 05:47:06,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:06,483 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:06,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 05:47:06,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:06,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:06,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:06,702 INFO L85 PathProgramCache]: Analyzing trace with hash -531579021, now seen corresponding path program 1 times [2023-12-21 05:47:06,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:06,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667880973] [2023-12-21 05:47:06,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:06,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:06,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:06,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305651678] [2023-12-21 05:47:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:06,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:06,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:06,737 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) [2023-12-21 05:47:06,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 05:47:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:06,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 05:47:06,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 05:47:06,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:47:06,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:06,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667880973] [2023-12-21 05:47:06,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:06,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305651678] [2023-12-21 05:47:06,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305651678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:47:06,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:47:06,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 05:47:06,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70677940] [2023-12-21 05:47:06,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:06,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 05:47:06,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 05:47:06,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 05:47:06,856 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 05:47:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:06,916 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2023-12-21 05:47:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 05:47:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-12-21 05:47:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:06,920 INFO L225 Difference]: With dead ends: 61 [2023-12-21 05:47:06,920 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 05:47:06,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-21 05:47:06,921 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:06,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 116 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:47:06,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 05:47:06,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-21 05:47:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 40 states have internal predecessors, (46), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 05:47:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2023-12-21 05:47:06,927 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 32 [2023-12-21 05:47:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:06,927 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2023-12-21 05:47:06,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 05:47:06,928 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2023-12-21 05:47:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 05:47:06,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:06,928 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:06,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 05:47:07,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:07,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:07,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:07,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2026419203, now seen corresponding path program 1 times [2023-12-21 05:47:07,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:07,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86543955] [2023-12-21 05:47:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:07,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:07,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:07,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873824847] [2023-12-21 05:47:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:07,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:07,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:07,165 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) [2023-12-21 05:47:07,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 05:47:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:07,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 05:47:07,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 05:47:07,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:47:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 05:47:07,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:07,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86543955] [2023-12-21 05:47:07,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:07,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873824847] [2023-12-21 05:47:07,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873824847] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:47:07,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 05:47:07,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-12-21 05:47:07,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239356737] [2023-12-21 05:47:07,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 05:47:07,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 05:47:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:07,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 05:47:07,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-21 05:47:07,396 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-21 05:47:07,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:07,473 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2023-12-21 05:47:07,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 05:47:07,474 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 38 [2023-12-21 05:47:07,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:07,474 INFO L225 Difference]: With dead ends: 65 [2023-12-21 05:47:07,474 INFO L226 Difference]: Without dead ends: 63 [2023-12-21 05:47:07,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-21 05:47:07,475 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:07,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 96 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:47:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-21 05:47:07,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-12-21 05:47:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 05:47:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2023-12-21 05:47:07,484 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 38 [2023-12-21 05:47:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:07,484 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2023-12-21 05:47:07,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-21 05:47:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2023-12-21 05:47:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 05:47:07,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:07,486 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:07,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 05:47:07,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-21 05:47:07,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:07,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:07,692 INFO L85 PathProgramCache]: Analyzing trace with hash -369399342, now seen corresponding path program 1 times [2023-12-21 05:47:07,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:07,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447138335] [2023-12-21 05:47:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:07,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:07,698 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:07,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863905919] [2023-12-21 05:47:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:07,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:07,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:07,699 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) [2023-12-21 05:47:07,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 05:47:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:07,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 05:47:07,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 05:47:07,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:47:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-21 05:47:07,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447138335] [2023-12-21 05:47:07,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863905919] [2023-12-21 05:47:07,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863905919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:47:07,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 05:47:07,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-21 05:47:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037555580] [2023-12-21 05:47:07,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 05:47:07,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 05:47:07,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:07,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 05:47:07,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-21 05:47:07,825 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-21 05:47:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:07,931 INFO L93 Difference]: Finished difference Result 224 states and 263 transitions. [2023-12-21 05:47:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 05:47:07,931 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 41 [2023-12-21 05:47:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:07,933 INFO L225 Difference]: With dead ends: 224 [2023-12-21 05:47:07,933 INFO L226 Difference]: Without dead ends: 217 [2023-12-21 05:47:07,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-12-21 05:47:07,934 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 89 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:07,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 169 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:47:07,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-21 05:47:07,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 201. [2023-12-21 05:47:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 131 states have (on average 1.183206106870229) internal successors, (155), 135 states have internal predecessors, (155), 44 states have call successors, (44), 25 states have call predecessors, (44), 25 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 05:47:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 239 transitions. [2023-12-21 05:47:07,951 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 239 transitions. Word has length 41 [2023-12-21 05:47:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:07,951 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 239 transitions. [2023-12-21 05:47:07,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-21 05:47:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 239 transitions. [2023-12-21 05:47:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 05:47:07,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:47:07,952 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:07,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 05:47:08,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:08,157 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:47:08,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:47:08,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1199104068, now seen corresponding path program 1 times [2023-12-21 05:47:08,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:47:08,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870159698] [2023-12-21 05:47:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:08,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:47:08,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 05:47:08,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426858452] [2023-12-21 05:47:08,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:47:08,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:47:08,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:47:08,174 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) [2023-12-21 05:47:08,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 05:47:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:47:08,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 05:47:08,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:47:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-21 05:47:08,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:47:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-21 05:47:08,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:47:08,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870159698] [2023-12-21 05:47:08,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 05:47:08,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426858452] [2023-12-21 05:47:08,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426858452] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 05:47:08,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 05:47:08,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-12-21 05:47:08,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10826525] [2023-12-21 05:47:08,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:47:08,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 05:47:08,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:47:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 05:47:08,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-12-21 05:47:08,533 INFO L87 Difference]: Start difference. First operand 201 states and 239 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 05:47:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:47:08,751 INFO L93 Difference]: Finished difference Result 201 states and 239 transitions. [2023-12-21 05:47:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 05:47:08,751 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2023-12-21 05:47:08,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:47:08,751 INFO L225 Difference]: With dead ends: 201 [2023-12-21 05:47:08,752 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 05:47:08,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-12-21 05:47:08,754 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:47:08,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 83 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:47:08,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 05:47:08,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 05:47:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:47:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 05:47:08,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2023-12-21 05:47:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:47:08,756 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 05:47:08,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 05:47:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 05:47:08,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 05:47:08,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 05:47:08,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 05:47:08,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 05:47:08,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 05:47:09,396 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2023-12-21 05:47:09,396 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-12-21 05:47:09,396 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2023-12-21 05:47:09,397 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-12-21 05:47:09,397 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2023-12-21 05:47:09,397 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2023-12-21 05:47:09,397 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (let ((.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) .cse1 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) (and .cse1 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)))) [2023-12-21 05:47:09,397 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-21 05:47:09,397 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= .cse0 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= (* .cse0 2) |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse0 |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))))) [2023-12-21 05:47:09,397 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2023-12-21 05:47:09,397 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2023-12-21 05:47:09,397 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= .cse0 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse0 |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))))) [2023-12-21 05:47:09,397 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2023-12-21 05:47:09,397 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-21 05:47:09,397 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2023-12-21 05:47:09,397 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2023-12-21 05:47:09,398 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-12-21 05:47:09,398 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2023-12-21 05:47:09,398 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2023-12-21 05:47:09,398 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2023-12-21 05:47:09,398 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-12-21 05:47:09,398 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-12-21 05:47:09,398 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-12-21 05:47:09,398 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-12-21 05:47:09,398 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-12-21 05:47:09,398 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-12-21 05:47:09,400 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:47:09,401 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 05:47:09,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:47:09 BoogieIcfgContainer [2023-12-21 05:47:09,410 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 05:47:09,410 INFO L158 Benchmark]: Toolchain (without parser) took 6006.37ms. Allocated memory was 206.6MB in the beginning and 314.6MB in the end (delta: 108.0MB). Free memory was 146.6MB in the beginning and 176.8MB in the end (delta: -30.1MB). Peak memory consumption was 79.0MB. Max. memory is 8.0GB. [2023-12-21 05:47:09,410 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 206.6MB. Free memory was 155.4MB in the beginning and 155.2MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 05:47:09,411 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.96ms. Allocated memory is still 206.6MB. Free memory was 146.6MB in the beginning and 135.3MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 05:47:09,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.62ms. Allocated memory is still 206.6MB. Free memory was 135.3MB in the beginning and 133.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 05:47:09,411 INFO L158 Benchmark]: Boogie Preprocessor took 19.84ms. Allocated memory is still 206.6MB. Free memory was 133.8MB in the beginning and 132.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 05:47:09,411 INFO L158 Benchmark]: RCFGBuilder took 327.84ms. Allocated memory is still 206.6MB. Free memory was 132.0MB in the beginning and 120.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 05:47:09,412 INFO L158 Benchmark]: TraceAbstraction took 5488.48ms. Allocated memory was 206.6MB in the beginning and 314.6MB in the end (delta: 108.0MB). Free memory was 119.7MB in the beginning and 176.8MB in the end (delta: -57.1MB). Peak memory consumption was 51.8MB. Max. memory is 8.0GB. [2023-12-21 05:47:09,413 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 206.6MB. Free memory was 155.4MB in the beginning and 155.2MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 143.96ms. Allocated memory is still 206.6MB. Free memory was 146.6MB in the beginning and 135.3MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.62ms. Allocated memory is still 206.6MB. Free memory was 135.3MB in the beginning and 133.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.84ms. Allocated memory is still 206.6MB. Free memory was 133.8MB in the beginning and 132.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 327.84ms. Allocated memory is still 206.6MB. Free memory was 132.0MB in the beginning and 120.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 5488.48ms. Allocated memory was 206.6MB in the beginning and 314.6MB in the end (delta: 108.0MB). Free memory was 119.7MB in the beginning and 176.8MB in the end (delta: -57.1MB). Peak memory consumption was 51.8MB. 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 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 226 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 966 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 710 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 467 IncrementalHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 256 mSDtfsCounter, 467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 406 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=9, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 70 PreInvPairs, 129 NumberOfFragments, 237 HoareAnnotationTreeSize, 70 FormulaSimplifications, 486 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FormulaSimplificationsInter, 1927 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 1309 SizeOfPredicates, 30 NumberOfNonLiveVariables, 851 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 367/418 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((a * y) == b) && (1 <= y)) && (1 <= r)) && ((b + x) == (((a * y) + r) + (q * y)))) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((x == (r + (q * y))) && (1 <= y)) && ((b + x) == (((a * y) + r) + (q * y)))) RESULT: Ultimate proved your program to be correct! [2023-12-21 05:47:09,445 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 Received shutdown request...