/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/array-patterns/array25_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:19:09,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:19:09,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:19:09,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:19:09,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:19:09,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:19:09,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:19:09,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:19:09,839 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:19:09,842 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:19:09,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:19:09,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:19:09,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:19:09,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:19:09,845 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:19:09,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:19:09,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:19:09,845 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:19:09,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:19:09,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:19:09,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:19:09,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:19:09,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:19:09,847 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:19:09,847 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:19:09,847 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:19:09,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:19:09,847 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:19:09,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:19:09,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:19:09,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:19:09,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:19:09,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:19:09,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:19:09,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:19:09,850 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:19:09,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:19:09,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:19:09,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:19:09,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:19:09,850 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:19:09,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:19:09,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:19:09,851 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:19:10,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:19:10,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:19:10,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:19:10,134 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:19:10,134 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:19:10,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array25_pattern.c [2023-12-16 00:19:11,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:19:11,492 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:19:11,493 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array25_pattern.c [2023-12-16 00:19:11,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b52c8c3fe/4006b3a6a7cb4267b4965e48909a820f/FLAGf7ef56ab7 [2023-12-16 00:19:11,512 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b52c8c3fe/4006b3a6a7cb4267b4965e48909a820f [2023-12-16 00:19:11,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:19:11,515 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:19:11,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:19:11,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:19:11,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:19:11,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545012d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11, skipping insertion in model container [2023-12-16 00:19:11,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,546 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:19:11,693 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array25_pattern.c[1270,1283] [2023-12-16 00:19:11,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:19:11,731 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:19:11,744 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array25_pattern.c[1270,1283] [2023-12-16 00:19:11,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:19:11,766 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:19:11,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11 WrapperNode [2023-12-16 00:19:11,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:19:11,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:19:11,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:19:11,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:19:11,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,805 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-12-16 00:19:11,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:19:11,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:19:11,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:19:11,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:19:11,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,828 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-16 00:19:11,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:19:11,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:19:11,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:19:11,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:19:11,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (1/1) ... [2023-12-16 00:19:11,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:19:11,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:11,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 00:19:11,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 00:19:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:19:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:19:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 00:19:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 00:19:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 00:19:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 00:19:11,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:19:11,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:19:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 00:19:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 00:19:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 00:19:12,010 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:19:12,013 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:19:12,218 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:19:12,253 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:19:12,253 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-16 00:19:12,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:19:12 BoogieIcfgContainer [2023-12-16 00:19:12,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:19:12,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:19:12,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:19:12,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:19:12,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:19:11" (1/3) ... [2023-12-16 00:19:12,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260823e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:19:12, skipping insertion in model container [2023-12-16 00:19:12,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:11" (2/3) ... [2023-12-16 00:19:12,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260823e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:19:12, skipping insertion in model container [2023-12-16 00:19:12,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:19:12" (3/3) ... [2023-12-16 00:19:12,261 INFO L112 eAbstractionObserver]: Analyzing ICFG array25_pattern.c [2023-12-16 00:19:12,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:19:12,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 00:19:12,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:19:12,334 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;@1c553d2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:19:12,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 00:19:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 18 states have internal predecessors, (30), 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) [2023-12-16 00:19:12,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 00:19:12,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:12,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:12,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:12,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash -222857167, now seen corresponding path program 1 times [2023-12-16 00:19:12,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:12,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092573862] [2023-12-16 00:19:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:12,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:12,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:12,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092573862] [2023-12-16 00:19:12,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 00:19:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522131354] [2023-12-16 00:19:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:12,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:12,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:12,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:12,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:19:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:12,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 00:19:12,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:19:12,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:19:12,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522131354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:19:12,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:19:12,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:19:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707255673] [2023-12-16 00:19:12,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:19:12,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:19:12,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:19:12,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:19:12,585 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 18 states have internal predecessors, (30), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-16 00:19:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:12,606 INFO L93 Difference]: Finished difference Result 36 states and 57 transitions. [2023-12-16 00:19:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:19:12,608 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2023-12-16 00:19:12,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:12,613 INFO L225 Difference]: With dead ends: 36 [2023-12-16 00:19:12,613 INFO L226 Difference]: Without dead ends: 17 [2023-12-16 00:19:12,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:19:12,617 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:12,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:19:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-16 00:19:12,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-16 00:19:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2023-12-16 00:19:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-12-16 00:19:12,644 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2023-12-16 00:19:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:12,644 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-12-16 00:19:12,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-16 00:19:12,645 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-12-16 00:19:12,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 00:19:12,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:12,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:12,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:12,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 00:19:12,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:12,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:12,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1833820021, now seen corresponding path program 1 times [2023-12-16 00:19:12,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:12,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425227836] [2023-12-16 00:19:12,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:12,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:12,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:12,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735341641] [2023-12-16 00:19:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:12,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:12,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:12,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:12,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:19:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:12,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 00:19:12,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:19:13,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:19:13,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:13,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425227836] [2023-12-16 00:19:13,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:13,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735341641] [2023-12-16 00:19:13,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735341641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:19:13,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:19:13,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:19:13,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520356488] [2023-12-16 00:19:13,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:19:13,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:19:13,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:13,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:19:13,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:19:13,017 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-12-16 00:19:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:13,071 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2023-12-16 00:19:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:19:13,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2023-12-16 00:19:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:13,072 INFO L225 Difference]: With dead ends: 24 [2023-12-16 00:19:13,072 INFO L226 Difference]: Without dead ends: 20 [2023-12-16 00:19:13,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:19:13,074 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:13,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:19:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-16 00:19:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-16 00:19:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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) [2023-12-16 00:19:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-12-16 00:19:13,079 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 9 [2023-12-16 00:19:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:13,079 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-12-16 00:19:13,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-12-16 00:19:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-12-16 00:19:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 00:19:13,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:13,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:13,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:13,293 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 [2023-12-16 00:19:13,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:13,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash -313136650, now seen corresponding path program 1 times [2023-12-16 00:19:13,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:13,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045923683] [2023-12-16 00:19:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:13,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:13,307 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:13,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432657177] [2023-12-16 00:19:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:13,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:13,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:13,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:13,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:19:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:13,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 00:19:13,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 00:19:13,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:19:13,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:13,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045923683] [2023-12-16 00:19:13,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:13,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432657177] [2023-12-16 00:19:13,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432657177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:19:13,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:19:13,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:19:13,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214788740] [2023-12-16 00:19:13,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:19:13,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:19:13,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:19:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:19:13,419 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-12-16 00:19:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:13,500 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2023-12-16 00:19:13,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 00:19:13,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) Word has length 13 [2023-12-16 00:19:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:13,503 INFO L225 Difference]: With dead ends: 50 [2023-12-16 00:19:13,503 INFO L226 Difference]: Without dead ends: 31 [2023-12-16 00:19:13,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:19:13,507 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:13,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 25 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:19:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-16 00:19:13,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2023-12-16 00:19:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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) [2023-12-16 00:19:13,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-12-16 00:19:13,523 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 13 [2023-12-16 00:19:13,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:13,523 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-12-16 00:19:13,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-12-16 00:19:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-12-16 00:19:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 00:19:13,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:13,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:13,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:13,732 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 [2023-12-16 00:19:13,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:13,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:13,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1464759019, now seen corresponding path program 1 times [2023-12-16 00:19:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:13,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699798120] [2023-12-16 00:19:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:13,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:13,745 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:13,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940907919] [2023-12-16 00:19:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:13,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:13,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:13,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:13,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:19:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:13,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 00:19:13,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:19:13,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:19:13,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699798120] [2023-12-16 00:19:13,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940907919] [2023-12-16 00:19:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940907919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:19:13,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:19:13,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:19:13,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070698981] [2023-12-16 00:19:13,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:19:13,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:19:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:13,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:19:13,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:19:13,839 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-12-16 00:19:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:13,884 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2023-12-16 00:19:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:19:13,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) Word has length 16 [2023-12-16 00:19:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:13,886 INFO L225 Difference]: With dead ends: 50 [2023-12-16 00:19:13,886 INFO L226 Difference]: Without dead ends: 33 [2023-12-16 00:19:13,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:19:13,887 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:13,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 13 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:19:13,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-16 00:19:13,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2023-12-16 00:19:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 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) [2023-12-16 00:19:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2023-12-16 00:19:13,893 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 16 [2023-12-16 00:19:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:13,893 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2023-12-16 00:19:13,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-12-16 00:19:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2023-12-16 00:19:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 00:19:13,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:13,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:13,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:14,100 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 [2023-12-16 00:19:14,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:14,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:14,101 INFO L85 PathProgramCache]: Analyzing trace with hash 642278233, now seen corresponding path program 1 times [2023-12-16 00:19:14,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:14,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259098237] [2023-12-16 00:19:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:14,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:14,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:14,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510113193] [2023-12-16 00:19:14,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:14,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:14,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:14,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:14,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:19:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:14,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 00:19:14,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:19:14,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:19:14,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:14,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259098237] [2023-12-16 00:19:14,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:14,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510113193] [2023-12-16 00:19:14,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510113193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:14,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:14,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 00:19:14,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886502124] [2023-12-16 00:19:14,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:14,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 00:19:14,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:14,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 00:19:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-16 00:19:14,325 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2023-12-16 00:19:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:14,436 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2023-12-16 00:19:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 00:19:14,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) Word has length 19 [2023-12-16 00:19:14,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:14,439 INFO L225 Difference]: With dead ends: 60 [2023-12-16 00:19:14,439 INFO L226 Difference]: Without dead ends: 41 [2023-12-16 00:19:14,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:19:14,441 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 63 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:14,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 25 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:19:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-16 00:19:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2023-12-16 00:19:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 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) [2023-12-16 00:19:14,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2023-12-16 00:19:14,456 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 19 [2023-12-16 00:19:14,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:14,456 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2023-12-16 00:19:14,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2023-12-16 00:19:14,457 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2023-12-16 00:19:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 00:19:14,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:14,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:14,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:14,665 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 [2023-12-16 00:19:14,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:14,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:14,667 INFO L85 PathProgramCache]: Analyzing trace with hash -605713484, now seen corresponding path program 1 times [2023-12-16 00:19:14,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:14,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958027116] [2023-12-16 00:19:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:14,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:14,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:14,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451466561] [2023-12-16 00:19:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:14,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:14,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:14,684 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:14,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 00:19:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:14,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 00:19:14,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 00:19:14,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 00:19:14,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:14,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958027116] [2023-12-16 00:19:14,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:14,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451466561] [2023-12-16 00:19:14,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451466561] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:14,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:14,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-16 00:19:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255946738] [2023-12-16 00:19:14,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:14,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 00:19:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:14,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 00:19:14,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:19:14,863 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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) [2023-12-16 00:19:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:15,132 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2023-12-16 00:19:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 00:19:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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) Word has length 24 [2023-12-16 00:19:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:15,133 INFO L225 Difference]: With dead ends: 104 [2023-12-16 00:19:15,133 INFO L226 Difference]: Without dead ends: 81 [2023-12-16 00:19:15,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2023-12-16 00:19:15,136 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:15,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 34 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:19:15,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-16 00:19:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2023-12-16 00:19:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 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) [2023-12-16 00:19:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2023-12-16 00:19:15,145 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 24 [2023-12-16 00:19:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:15,145 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2023-12-16 00:19:15,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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) [2023-12-16 00:19:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2023-12-16 00:19:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 00:19:15,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:15,149 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:15,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:15,354 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 [2023-12-16 00:19:15,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:15,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:15,355 INFO L85 PathProgramCache]: Analyzing trace with hash 185659526, now seen corresponding path program 1 times [2023-12-16 00:19:15,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:15,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654774246] [2023-12-16 00:19:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:15,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:15,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:15,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011191415] [2023-12-16 00:19:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:15,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:15,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:15,390 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:15,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 00:19:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:15,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-16 00:19:15,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:15,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 00:19:15,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-16 00:19:16,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:16,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-12-16 00:19:16,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:16,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 40 [2023-12-16 00:19:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:19:16,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:18,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 471 treesize of output 455 [2023-12-16 00:19:19,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:19,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 7101729915 treesize of output 6782962845 [2023-12-16 00:19:43,120 WARN L293 SmtUtils]: Spent 23.80s on a formula simplification. DAG size of input: 12345 DAG size of output: 1312 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-16 00:20:20,349 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:20:20,353 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:20:20,385 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 00:20:20,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 00:20:20,597 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 [2023-12-16 00:20:20,597 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 41 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-45-5-3-5-2-2-2-3-2-3-2-2-2-1 context. [2023-12-16 00:20:20,604 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:20:20,606 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:20:20,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:20:20 BoogieIcfgContainer [2023-12-16 00:20:20,608 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:20:20,609 INFO L158 Benchmark]: Toolchain (without parser) took 69094.43ms. Allocated memory was 182.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 124.8MB in the beginning and 578.4MB in the end (delta: -453.5MB). Peak memory consumption was 915.1MB. Max. memory is 8.0GB. [2023-12-16 00:20:20,610 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:20:20,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.85ms. Allocated memory is still 182.5MB. Free memory was 124.4MB in the beginning and 113.2MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 00:20:20,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.51ms. Allocated memory is still 182.5MB. Free memory was 113.2MB in the beginning and 111.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 00:20:20,610 INFO L158 Benchmark]: Boogie Preprocessor took 34.51ms. Allocated memory is still 182.5MB. Free memory was 111.6MB in the beginning and 109.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 00:20:20,611 INFO L158 Benchmark]: RCFGBuilder took 412.21ms. Allocated memory is still 182.5MB. Free memory was 109.5MB in the beginning and 95.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 00:20:20,611 INFO L158 Benchmark]: TraceAbstraction took 68352.51ms. Allocated memory was 182.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 94.9MB in the beginning and 578.4MB in the end (delta: -483.5MB). Peak memory consumption was 885.7MB. Max. memory is 8.0GB. [2023-12-16 00:20:20,613 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.85ms. Allocated memory is still 182.5MB. Free memory was 124.4MB in the beginning and 113.2MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.51ms. Allocated memory is still 182.5MB. Free memory was 113.2MB in the beginning and 111.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.51ms. Allocated memory is still 182.5MB. Free memory was 111.6MB in the beginning and 109.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 412.21ms. Allocated memory is still 182.5MB. Free memory was 109.5MB in the beginning and 95.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 68352.51ms. Allocated memory was 182.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 94.9MB in the beginning and 578.4MB in the end (delta: -483.5MB). Peak memory consumption was 885.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 33). Cancelled while NwaCegarLoop was analyzing trace of length 41 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-45-5-3-5-2-2-2-3-2-3-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.3s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 169 mSDsluCounter, 162 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 91 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 371 IncrementalHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 71 mSDtfsCounter, 371 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=6, InterpolantAutomatonStates: 41, 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, 6 MinimizatonAttempts, 34 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 319 SizeOfPredicates, 16 NumberOfNonLiveVariables, 462 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 21/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown