/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops-crafted-1/vnew2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 18:41:17,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 18:41:17,077 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 18:41:17,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 18:41:17,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 18:41:17,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 18:41:17,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 18:41:17,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 18:41:17,102 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 18:41:17,105 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 18:41:17,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 18:41:17,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 18:41:17,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 18:41:17,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 18:41:17,106 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 18:41:17,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 18:41:17,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 18:41:17,107 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 18:41:17,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 18:41:17,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 18:41:17,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 18:41:17,108 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 18:41:17,108 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 18:41:17,108 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 18:41:17,108 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 18:41:17,108 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 18:41:17,108 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 18:41:17,108 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 18:41:17,109 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 18:41:17,109 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 18:41:17,110 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 18:41:17,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 18:41:17,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:41:17,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 18:41:17,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 18:41:17,110 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 18:41:17,110 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 18:41:17,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 18:41:17,110 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 18:41:17,111 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 18:41:17,111 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 18:41:17,111 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 18:41:17,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 18:41:17,111 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 18:41:17,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 18:41:17,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 18:41:17,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 18:41:17,301 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 18:41:17,302 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 18:41:17,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/vnew2.c [2023-12-19 18:41:18,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 18:41:18,309 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 18:41:18,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/vnew2.c [2023-12-19 18:41:18,313 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74eeeee4/9e09ec4b031a410598271e19ca69564e/FLAGb33eefc32 [2023-12-19 18:41:18,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74eeeee4/9e09ec4b031a410598271e19ca69564e [2023-12-19 18:41:18,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 18:41:18,325 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 18:41:18,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 18:41:18,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 18:41:18,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 18:41:18,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6692b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18, skipping insertion in model container [2023-12-19 18:41:18,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,341 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 18:41:18,429 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/vnew2.c[403,416] [2023-12-19 18:41:18,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:41:18,442 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 18:41:18,450 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/vnew2.c[403,416] [2023-12-19 18:41:18,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:41:18,461 INFO L206 MainTranslator]: Completed translation [2023-12-19 18:41:18,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18 WrapperNode [2023-12-19 18:41:18,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 18:41:18,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 18:41:18,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 18:41:18,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 18:41:18,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,481 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-12-19 18:41:18,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 18:41:18,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 18:41:18,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 18:41:18,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 18:41:18,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,495 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-12-19 18:41:18,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 18:41:18,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 18:41:18,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 18:41:18,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 18:41:18,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (1/1) ... [2023-12-19 18:41:18,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:41:18,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:41:18,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 18:41:18,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 18:41:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 18:41:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 18:41:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 18:41:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 18:41:18,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 18:41:18,607 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 18:41:18,610 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 18:41:18,711 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 18:41:18,724 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 18:41:18,724 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 18:41:18,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:41:18 BoogieIcfgContainer [2023-12-19 18:41:18,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 18:41:18,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 18:41:18,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 18:41:18,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 18:41:18,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:41:18" (1/3) ... [2023-12-19 18:41:18,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d8a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:41:18, skipping insertion in model container [2023-12-19 18:41:18,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:41:18" (2/3) ... [2023-12-19 18:41:18,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d8a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:41:18, skipping insertion in model container [2023-12-19 18:41:18,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:41:18" (3/3) ... [2023-12-19 18:41:18,730 INFO L112 eAbstractionObserver]: Analyzing ICFG vnew2.c [2023-12-19 18:41:18,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 18:41:18,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 18:41:18,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 18:41:18,772 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;@6777d6ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 18:41:18,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 18:41:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2023-12-19 18:41:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 18:41:18,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:41:18,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 18:41:18,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:41:18,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:41:18,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2068321701, now seen corresponding path program 1 times [2023-12-19 18:41:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:41:18,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396627681] [2023-12-19 18:41:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:41:18,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:41:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:41:18,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:41:18,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396627681] [2023-12-19 18:41:18,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 18:41:18,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436673357] [2023-12-19 18:41:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:41:18,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:41:18,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:41:18,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:41:18,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 18:41:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:41:18,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 18:41:18,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:41:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:41:18,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 18:41:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436673357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:41:18,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:41:18,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 18:41:18,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226394815] [2023-12-19 18:41:18,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:41:18,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 18:41:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:41:18,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 18:41:18,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 18:41:18,989 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-12-19 18:41:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:41:19,014 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2023-12-19 18:41:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 18:41:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-12-19 18:41:19,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:41:19,021 INFO L225 Difference]: With dead ends: 19 [2023-12-19 18:41:19,021 INFO L226 Difference]: Without dead ends: 7 [2023-12-19 18:41:19,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 18:41:19,027 INFO L413 NwaCegarLoop]: 11 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, 11 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 [2023-12-19 18:41:19,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:41:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-19 18:41:19,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-19 18:41:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-12-19 18:41:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-12-19 18:41:19,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2023-12-19 18:41:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:41:19,046 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-12-19 18:41:19,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-12-19 18:41:19,046 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-12-19 18:41:19,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 18:41:19,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:41:19,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 18:41:19,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 18:41:19,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 18:41:19,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:41:19,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:41:19,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2068202537, now seen corresponding path program 1 times [2023-12-19 18:41:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:41:19,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118740371] [2023-12-19 18:41:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:41:19,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:41:19,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:41:19,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762781206] [2023-12-19 18:41:19,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:41:19,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:41:19,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:41:19,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:41:19,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 18:41:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:41:19,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 18:41:19,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:41:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:41:19,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 18:41:19,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:41:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118740371] [2023-12-19 18:41:19,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:41:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762781206] [2023-12-19 18:41:19,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762781206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:41:19,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:41:19,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 18:41:19,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565954186] [2023-12-19 18:41:19,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:41:19,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 18:41:19,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:41:19,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 18:41:19,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 18:41:19,362 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-12-19 18:41:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:41:19,389 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2023-12-19 18:41:19,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 18:41:19,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2023-12-19 18:41:19,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:41:19,391 INFO L225 Difference]: With dead ends: 12 [2023-12-19 18:41:19,391 INFO L226 Difference]: Without dead ends: 8 [2023-12-19 18:41:19,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 18:41:19,392 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:41:19,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:41:19,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-12-19 18:41:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-12-19 18:41:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2023-12-19 18:41:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-19 18:41:19,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-12-19 18:41:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:41:19,396 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-19 18:41:19,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-12-19 18:41:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-19 18:41:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-19 18:41:19,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:41:19,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:41:19,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 18:41:19,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 18:41:19,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:41:19,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:41:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -308624997, now seen corresponding path program 1 times [2023-12-19 18:41:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:41:19,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821610950] [2023-12-19 18:41:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:41:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:41:19,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:41:19,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62704544] [2023-12-19 18:41:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:41:19,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:41:19,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:41:19,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:41:19,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 18:41:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:41:19,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 18:41:19,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:41:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:41:19,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:41:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:41:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:41:19,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821610950] [2023-12-19 18:41:19,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:41:19,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62704544] [2023-12-19 18:41:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62704544] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:41:19,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 18:41:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-19 18:41:19,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045699602] [2023-12-19 18:41:19,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 18:41:19,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 18:41:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:41:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 18:41:19,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-19 18:41:19,908 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 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) [2023-12-19 18:41:22,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:41:23,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:41:23,454 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2023-12-19 18:41:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 18:41:23,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 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 7 [2023-12-19 18:41:23,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:41:23,454 INFO L225 Difference]: With dead ends: 19 [2023-12-19 18:41:23,454 INFO L226 Difference]: Without dead ends: 11 [2023-12-19 18:41:23,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2023-12-19 18:41:23,456 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 18:41:23,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 18:41:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-19 18:41:23,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-19 18:41:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2023-12-19 18:41:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-19 18:41:23,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-19 18:41:23,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:41:23,459 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-19 18:41:23,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 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) [2023-12-19 18:41:23,459 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-19 18:41:23,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-19 18:41:23,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:41:23,460 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-12-19 18:41:23,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 18:41:23,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:41:23,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:41:23,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:41:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1422716759, now seen corresponding path program 2 times [2023-12-19 18:41:23,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:41:23,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778859489] [2023-12-19 18:41:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:41:23,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:41:23,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:41:23,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055021908] [2023-12-19 18:41:23,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:41:23,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:41:23,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:41:23,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:41:23,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 18:41:23,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:41:23,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:41:23,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-19 18:41:23,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:41:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:41:23,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:41:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:41:24,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:41:24,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778859489] [2023-12-19 18:41:24,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:41:24,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055021908] [2023-12-19 18:41:24,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055021908] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:41:24,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 18:41:24,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-19 18:41:24,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520865996] [2023-12-19 18:41:24,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 18:41:24,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 18:41:24,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:41:24,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 18:41:24,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-19 18:41:24,365 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 18 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 17 states have internal predecessors, (19), 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) [2023-12-19 18:42:35,511 WARN L293 SmtUtils]: Spent 1.14m on a formula simplification. DAG size of input: 95 DAG size of output: 77 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:42:39,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:42:59,120 WARN L293 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 79 DAG size of output: 61 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:43:03,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:43:04,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:43:33,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:44:09,495 WARN L293 SmtUtils]: Spent 14.08s on a formula simplification. DAG size of input: 78 DAG size of output: 60 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:45:48,676 WARN L293 SmtUtils]: Spent 1.34m on a formula simplification. DAG size of input: 97 DAG size of output: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:45:53,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:45:57,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:46:09,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:46:13,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:46:51,674 WARN L293 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 61 DAG size of output: 54 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:46:55,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:46:59,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:47:03,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:47:40,574 WARN L293 SmtUtils]: Spent 16.50s on a formula simplification. DAG size of input: 81 DAG size of output: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:48:05,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:48:09,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:48:58,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:48:59,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:49:14,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:49:14,758 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-12-19 18:49:14,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 18:49:14,758 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 17 states have internal predecessors, (19), 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 10 [2023-12-19 18:49:14,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:49:14,758 INFO L225 Difference]: With dead ends: 31 [2023-12-19 18:49:14,758 INFO L226 Difference]: Without dead ends: 17 [2023-12-19 18:49:14,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 413.6s TimeCoverageRelationStatistics Valid=319, Invalid=699, Unknown=38, NotChecked=0, Total=1056 [2023-12-19 18:49:14,759 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 49 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:49:14,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 16 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 12 Unknown, 0 Unchecked, 57.1s Time] [2023-12-19 18:49:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-19 18:49:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-19 18:49:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2023-12-19 18:49:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-12-19 18:49:14,764 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2023-12-19 18:49:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:49:14,765 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-12-19 18:49:14,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 17 states have internal predecessors, (19), 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) [2023-12-19 18:49:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-12-19 18:49:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-19 18:49:14,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:49:14,765 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-12-19 18:49:14,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 18:49:14,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:49:14,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:49:14,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:49:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash 654510953, now seen corresponding path program 3 times [2023-12-19 18:49:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:49:14,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945134045] [2023-12-19 18:49:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:49:14,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:49:14,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:49:14,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865892713] [2023-12-19 18:49:14,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:49:14,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:49:14,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:49:14,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:49:15,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 18:49:15,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-19 18:49:15,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:49:15,102 WARN L260 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-19 18:49:15,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:49:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:49:15,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:49:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:49:20,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:49:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945134045] [2023-12-19 18:49:20,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:49:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865892713] [2023-12-19 18:49:20,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865892713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:49:20,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 18:49:20,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-19 18:49:20,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053759110] [2023-12-19 18:49:20,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 18:49:20,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 18:49:20,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:49:20,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 18:49:20,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2023-12-19 18:49:20,801 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 30 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 29 states have internal predecessors, (31), 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) [2023-12-19 18:49:24,908 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse1 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 27) 4294967296)) (.cse13 (mod (+ 21 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse3 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 24) 4294967296)) (.cse7 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse17 (mod (+ 12 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse19 (mod (+ 15 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse14 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 18) 4294967296)) (.cse4 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse9 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse2 (mod (+ 2 c_~SIZE~0) 4294967296))) (and (or (let ((.cse0 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 27) 4294967296))) (and (= (mod (+ 27 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse0) (= .cse1 .cse0) (not (= (mod (mod .cse1 .cse2) 4294967296) 0)))) (< .cse1 (+ .cse3 1))) (or (< .cse4 (+ .cse5 1)) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 3) 4294967296))) (and (= .cse6 (mod (+ 3 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse4 .cse2) 4294967296) 0)) (= .cse4 .cse6)))) (or (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 9) 4294967296))) (and (= .cse7 .cse8) (not (= (mod (mod .cse7 .cse2) 4294967296) 0)) (= (mod (+ 9 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse8))) (< .cse7 (+ .cse9 1))) (or (< (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296) 1) (let ((.cse10 (mod |c_ULTIMATE.start_main_~j~0#1| 4294967296))) (and (= .cse5 .cse10) (= .cse10 (mod |c_ULTIMATE.start_main_~k~0#1| 4294967296)) (not (= (mod (mod .cse5 .cse2) 4294967296) 0))))) (let ((.cse11 (mod (+ 30 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (or (< .cse11 (+ .cse1 1)) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 30) 4294967296))) (and (= (mod (+ 30 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse12) (= .cse11 .cse12) (not (= (mod (mod .cse11 .cse2) 4294967296) 0)))))) (or (< .cse13 (+ .cse14 1)) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 21) 4294967296))) (and (= (mod (+ 21 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse15) (not (= (mod (mod .cse13 .cse2) 4294967296) 0)) (= .cse15 .cse13)))) (or (< .cse3 (+ .cse13 1)) (let ((.cse16 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 24) 4294967296))) (and (not (= (mod (mod .cse3 .cse2) 4294967296) 0)) (= .cse16 (mod (+ |c_ULTIMATE.start_main_~k~0#1| 24) 4294967296)) (= .cse16 .cse3)))) (or (< .cse17 (+ .cse7 1)) (let ((.cse18 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 12) 4294967296))) (and (= .cse17 .cse18) (not (= (mod (mod .cse17 .cse2) 4294967296) 0)) (= (mod (+ 12 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse18)))) (or (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 15) 4294967296))) (and (= .cse19 .cse20) (= .cse20 (mod (+ 15 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse19 .cse2) 4294967296) 0)))) (< .cse19 (+ .cse17 1))) (= 20000001 c_~SIZE~0) (or (< .cse14 (+ .cse19 1)) (let ((.cse21 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 18) 4294967296))) (and (not (= (mod (mod .cse14 .cse2) 4294967296) 0)) (= .cse21 .cse14) (= .cse21 (mod (+ 18 |c_ULTIMATE.start_main_~k~0#1|) 4294967296))))) (or (< .cse9 (+ .cse4 1)) (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 6) 4294967296))) (and (= .cse22 (mod (+ 6 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (= .cse22 .cse9) (not (= (mod (mod .cse9 .cse2) 4294967296) 0))))))) is different from false [2023-12-19 18:49:29,184 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse12 (mod (+ 21 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse6 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 24) 4294967296)) (.cse9 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse16 (mod (+ 12 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse18 (mod (+ 15 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse13 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 18) 4294967296)) (.cse7 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse11 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse3 (mod (+ 2 c_~SIZE~0) 4294967296))) (and (let ((.cse0 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (or (< .cse0 1) (< .cse1 .cse0) (let ((.cse2 (mod |c_ULTIMATE.start_main_~j~0#1| 4294967296))) (and (= .cse1 .cse2) (= .cse2 (mod |c_ULTIMATE.start_main_~k~0#1| 4294967296)) (not (= (mod (mod .cse1 .cse3) 4294967296) 0)))))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 27) 4294967296))) (or (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 27) 4294967296))) (and (= (mod (+ 27 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse4) (= .cse5 .cse4) (not (= (mod (mod .cse5 .cse3) 4294967296) 0)))) (< .cse5 (+ .cse6 1)))) (or (< .cse7 (+ .cse1 1)) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 3) 4294967296))) (and (= .cse8 (mod (+ 3 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse7 .cse3) 4294967296) 0)) (= .cse7 .cse8)))) (or (let ((.cse10 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 9) 4294967296))) (and (= .cse9 .cse10) (not (= (mod (mod .cse9 .cse3) 4294967296) 0)) (= (mod (+ 9 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse10))) (< .cse9 (+ .cse11 1))) (or (< .cse12 (+ .cse13 1)) (let ((.cse14 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 21) 4294967296))) (and (= (mod (+ 21 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse14) (not (= (mod (mod .cse12 .cse3) 4294967296) 0)) (= .cse14 .cse12)))) (or (< .cse6 (+ .cse12 1)) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 24) 4294967296))) (and (not (= (mod (mod .cse6 .cse3) 4294967296) 0)) (= .cse15 (mod (+ |c_ULTIMATE.start_main_~k~0#1| 24) 4294967296)) (= .cse15 .cse6)))) (or (< .cse16 (+ .cse9 1)) (let ((.cse17 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 12) 4294967296))) (and (= .cse16 .cse17) (not (= (mod (mod .cse16 .cse3) 4294967296) 0)) (= (mod (+ 12 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse17)))) (or (let ((.cse19 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 15) 4294967296))) (and (= .cse18 .cse19) (= .cse19 (mod (+ 15 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse18 .cse3) 4294967296) 0)))) (< .cse18 (+ .cse16 1))) (or (< .cse13 (+ .cse18 1)) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 18) 4294967296))) (and (not (= (mod (mod .cse13 .cse3) 4294967296) 0)) (= .cse20 .cse13) (= .cse20 (mod (+ 18 |c_ULTIMATE.start_main_~k~0#1|) 4294967296))))) (or (< .cse11 (+ .cse7 1)) (let ((.cse21 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 6) 4294967296))) (and (= .cse21 (mod (+ 6 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (= .cse21 .cse11) (not (= (mod (mod .cse11 .cse3) 4294967296) 0))))))) is different from false Received shutdown request... [2023-12-19 18:56:07,248 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 18:56:07,248 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 18:56:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 18:56:07,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=252, Invalid=684, Unknown=2, NotChecked=118, Total=1056 [2023-12-19 18:56:07,280 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:56:07,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2023-12-19 18:56:07,281 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 18:56:07,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 18:56:07,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:56:07,484 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (17states) and FLOYD_HOARE automaton (currently 19 states, 30 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-9-3-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-19 18:56:07,487 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-12-19 18:56:07,489 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 18:56:07,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:56:07 BoogieIcfgContainer [2023-12-19 18:56:07,490 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 18:56:07,491 INFO L158 Benchmark]: Toolchain (without parser) took 889165.52ms. Allocated memory is still 332.4MB. Free memory was 292.2MB in the beginning and 254.3MB in the end (delta: 37.9MB). Peak memory consumption was 39.3MB. Max. memory is 8.0GB. [2023-12-19 18:56:07,491 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 186.6MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 18:56:07,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 135.66ms. Allocated memory is still 332.4MB. Free memory was 291.7MB in the beginning and 280.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:56:07,491 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.73ms. Allocated memory is still 332.4MB. Free memory was 280.7MB in the beginning and 279.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 18:56:07,491 INFO L158 Benchmark]: Boogie Preprocessor took 19.37ms. Allocated memory is still 332.4MB. Free memory was 279.1MB in the beginning and 277.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 18:56:07,492 INFO L158 Benchmark]: RCFGBuilder took 223.85ms. Allocated memory is still 332.4MB. Free memory was 277.5MB in the beginning and 265.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-19 18:56:07,492 INFO L158 Benchmark]: TraceAbstraction took 888764.28ms. Allocated memory is still 332.4MB. Free memory was 264.9MB in the beginning and 254.3MB in the end (delta: 10.7MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2023-12-19 18:56:07,493 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 186.6MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 135.66ms. Allocated memory is still 332.4MB. Free memory was 291.7MB in the beginning and 280.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.73ms. Allocated memory is still 332.4MB. Free memory was 280.7MB in the beginning and 279.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.37ms. Allocated memory is still 332.4MB. Free memory was 279.1MB in the beginning and 277.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 223.85ms. Allocated memory is still 332.4MB. Free memory was 277.5MB in the beginning and 265.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 888764.28ms. Allocated memory is still 332.4MB. Free memory was 264.9MB in the beginning and 254.3MB in the end (delta: 10.7MB). Peak memory consumption was 12.1MB. 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: 10]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 10). Cancelled while NwaCegarLoop was constructing difference of abstraction (17states) and FLOYD_HOARE automaton (currently 19 states, 30 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-9-3-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 888.7s, OverallIterations: 5, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 880.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 59.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 59.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 67 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 355 IncrementalHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 19 mSDtfsCounter, 355 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 428.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=4, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 1380 SizeOfPredicates, 22 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/132 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