/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-multidimensional/max-2-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 09:13:38,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 09:13:38,592 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 09:13:38,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 09:13:38,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 09:13:38,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 09:13:38,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 09:13:38,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 09:13:38,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 09:13:38,620 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 09:13:38,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 09:13:38,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 09:13:38,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 09:13:38,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 09:13:38,622 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 09:13:38,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 09:13:38,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 09:13:38,623 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 09:13:38,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 09:13:38,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 09:13:38,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 09:13:38,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 09:13:38,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 09:13:38,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 09:13:38,624 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 09:13:38,624 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 09:13:38,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 09:13:38,624 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 09:13:38,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 09:13:38,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 09:13:38,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 09:13:38,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 09:13:38,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 09:13:38,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 09:13:38,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 09:13:38,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 09:13:38,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 09:13:38,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 09:13:38,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 09:13:38,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 09:13:38,627 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 09:13:38,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 09:13:38,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 09:13:38,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 09:13:38,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 09:13:38,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 09:13:38,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 09:13:38,831 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 09:13:38,834 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 09:13:38,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/max-2-u.c [2023-12-20 09:13:39,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 09:13:40,085 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 09:13:40,086 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/max-2-u.c [2023-12-20 09:13:40,092 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695690a71/96a64e00fcc04d78971d3820cb3ce58d/FLAG39a4fd95d [2023-12-20 09:13:40,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695690a71/96a64e00fcc04d78971d3820cb3ce58d [2023-12-20 09:13:40,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 09:13:40,113 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 09:13:40,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 09:13:40,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 09:13:40,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 09:13:40,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ef8664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40, skipping insertion in model container [2023-12-20 09:13:40,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,138 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 09:13:40,229 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-multidimensional/max-2-u.c[319,332] [2023-12-20 09:13:40,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 09:13:40,247 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 09:13:40,255 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-multidimensional/max-2-u.c[319,332] [2023-12-20 09:13:40,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 09:13:40,271 INFO L206 MainTranslator]: Completed translation [2023-12-20 09:13:40,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40 WrapperNode [2023-12-20 09:13:40,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 09:13:40,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 09:13:40,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 09:13:40,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 09:13:40,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,295 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-12-20 09:13:40,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 09:13:40,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 09:13:40,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 09:13:40,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 09:13:40,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,304 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,322 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-20 09:13:40,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 09:13:40,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 09:13:40,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 09:13:40,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 09:13:40,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (1/1) ... [2023-12-20 09:13:40,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 09:13:40,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:13:40,362 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) [2023-12-20 09:13:40,367 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 [2023-12-20 09:13:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 09:13:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 09:13:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 09:13:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 09:13:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 09:13:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 09:13:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 09:13:40,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 09:13:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 09:13:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 09:13:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 09:13:40,456 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 09:13:40,457 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 09:13:40,598 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 09:13:40,615 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 09:13:40,615 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-20 09:13:40,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:13:40 BoogieIcfgContainer [2023-12-20 09:13:40,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 09:13:40,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 09:13:40,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 09:13:40,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 09:13:40,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 09:13:40" (1/3) ... [2023-12-20 09:13:40,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42482603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:13:40, skipping insertion in model container [2023-12-20 09:13:40,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:13:40" (2/3) ... [2023-12-20 09:13:40,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42482603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:13:40, skipping insertion in model container [2023-12-20 09:13:40,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:13:40" (3/3) ... [2023-12-20 09:13:40,621 INFO L112 eAbstractionObserver]: Analyzing ICFG max-2-u.c [2023-12-20 09:13:40,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 09:13:40,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 09:13:40,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 09:13:40,662 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;@79ec03d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 09:13:40,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 09:13:40,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 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) [2023-12-20 09:13:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-20 09:13:40,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:13:40,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:13:40,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:13:40,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:13:40,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1260479934, now seen corresponding path program 1 times [2023-12-20 09:13:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:13:40,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872314470] [2023-12-20 09:13:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:40,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:13:40,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:13:40,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664126552] [2023-12-20 09:13:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:40,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:13:40,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:13:40,766 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) [2023-12-20 09:13:40,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 09:13:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:13:40,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 09:13:40,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:13:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:13:40,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:13:40,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:13:40,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872314470] [2023-12-20 09:13:40,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:13:40,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664126552] [2023-12-20 09:13:40,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664126552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:13:40,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:13:40,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 09:13:40,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667172087] [2023-12-20 09:13:40,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:13:40,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 09:13:40,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:13:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 09:13:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 09:13:40,922 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 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) Second operand has 3 states, 3 states have (on average 3.0) 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) [2023-12-20 09:13:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:13:40,975 INFO L93 Difference]: Finished difference Result 42 states and 72 transitions. [2023-12-20 09:13:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 09:13:40,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) 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 [2023-12-20 09:13:40,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:13:40,983 INFO L225 Difference]: With dead ends: 42 [2023-12-20 09:13:40,983 INFO L226 Difference]: Without dead ends: 21 [2023-12-20 09:13:40,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 09:13:40,988 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:13:40,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:13:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-20 09:13:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2023-12-20 09:13:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2023-12-20 09:13:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-12-20 09:13:41,012 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2023-12-20 09:13:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:13:41,013 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-12-20 09:13:41,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) 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) [2023-12-20 09:13:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-12-20 09:13:41,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-20 09:13:41,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:13:41,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:13:41,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 09:13:41,248 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 [2023-12-20 09:13:41,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:13:41,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:13:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash 800318851, now seen corresponding path program 1 times [2023-12-20 09:13:41,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:13:41,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189334592] [2023-12-20 09:13:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:41,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:13:41,256 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:13:41,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941800192] [2023-12-20 09:13:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:41,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:13:41,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:13:41,260 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) [2023-12-20 09:13:41,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 09:13:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:13:41,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 09:13:41,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:13:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:13:41,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:13:41,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:13:41,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189334592] [2023-12-20 09:13:41,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:13:41,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941800192] [2023-12-20 09:13:41,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941800192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:13:41,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:13:41,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 09:13:41,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683990332] [2023-12-20 09:13:41,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:13:41,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 09:13:41,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:13:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 09:13:41,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:13:41,355 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-12-20 09:13:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:13:41,393 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2023-12-20 09:13:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 09:13:41,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2023-12-20 09:13:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:13:41,394 INFO L225 Difference]: With dead ends: 48 [2023-12-20 09:13:41,394 INFO L226 Difference]: Without dead ends: 31 [2023-12-20 09:13:41,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:13:41,395 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:13:41,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 19 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:13:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-20 09:13:41,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2023-12-20 09:13:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 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) [2023-12-20 09:13:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-20 09:13:41,399 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2023-12-20 09:13:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:13:41,399 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-20 09:13:41,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-12-20 09:13:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-20 09:13:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-20 09:13:41,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:13:41,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:13:41,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 09:13:41,604 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 [2023-12-20 09:13:41,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:13:41,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:13:41,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1845944019, now seen corresponding path program 1 times [2023-12-20 09:13:41,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:13:41,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205051308] [2023-12-20 09:13:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:41,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:13:41,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:13:41,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264737875] [2023-12-20 09:13:41,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:41,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:13:41,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:13:41,619 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) [2023-12-20 09:13:41,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 09:13:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:13:41,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 09:13:41,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:13:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:13:41,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:13:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:13:41,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:13:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205051308] [2023-12-20 09:13:41,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:13:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264737875] [2023-12-20 09:13:41,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264737875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:13:41,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:13:41,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-20 09:13:41,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332438244] [2023-12-20 09:13:41,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:13:41,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 09:13:41,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:13:41,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 09:13:41,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 09:13:41,703 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 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) [2023-12-20 09:13:41,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:13:41,769 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2023-12-20 09:13:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 09:13:41,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 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) Word has length 13 [2023-12-20 09:13:41,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:13:41,770 INFO L225 Difference]: With dead ends: 72 [2023-12-20 09:13:41,770 INFO L226 Difference]: Without dead ends: 52 [2023-12-20 09:13:41,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-20 09:13:41,771 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 143 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:13:41,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 27 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:13:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-20 09:13:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2023-12-20 09:13:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 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) [2023-12-20 09:13:41,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2023-12-20 09:13:41,777 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 13 [2023-12-20 09:13:41,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:13:41,777 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2023-12-20 09:13:41,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 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) [2023-12-20 09:13:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2023-12-20 09:13:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 09:13:41,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:13:41,778 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:13:41,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 09:13:41,983 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 [2023-12-20 09:13:41,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:13:41,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:13:41,984 INFO L85 PathProgramCache]: Analyzing trace with hash 888832003, now seen corresponding path program 2 times [2023-12-20 09:13:41,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:13:41,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938311089] [2023-12-20 09:13:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:41,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:13:41,991 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:13:41,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720172083] [2023-12-20 09:13:41,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 09:13:41,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:13:41,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:13:41,992 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) [2023-12-20 09:13:41,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 09:13:42,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-20 09:13:42,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:13:42,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 09:13:42,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:13:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 09:13:42,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:13:42,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:13:42,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938311089] [2023-12-20 09:13:42,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:13:42,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720172083] [2023-12-20 09:13:42,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720172083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:13:42,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:13:42,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 09:13:42,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21121104] [2023-12-20 09:13:42,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:13:42,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 09:13:42,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:13:42,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 09:13:42,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:13:42,069 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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) [2023-12-20 09:13:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:13:42,099 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2023-12-20 09:13:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 09:13:42,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 16 [2023-12-20 09:13:42,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:13:42,101 INFO L225 Difference]: With dead ends: 99 [2023-12-20 09:13:42,101 INFO L226 Difference]: Without dead ends: 81 [2023-12-20 09:13:42,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:13:42,102 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:13:42,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:13:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-20 09:13:42,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 44. [2023-12-20 09:13:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 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) [2023-12-20 09:13:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2023-12-20 09:13:42,108 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 16 [2023-12-20 09:13:42,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:13:42,108 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2023-12-20 09:13:42,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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) [2023-12-20 09:13:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2023-12-20 09:13:42,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-20 09:13:42,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:13:42,109 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:13:42,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 09:13:42,314 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 [2023-12-20 09:13:42,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:13:42,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:13:42,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1826388551, now seen corresponding path program 1 times [2023-12-20 09:13:42,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:13:42,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822351328] [2023-12-20 09:13:42,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:42,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:13:42,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:13:42,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190710552] [2023-12-20 09:13:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:42,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:13:42,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:13:42,324 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) [2023-12-20 09:13:42,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 09:13:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:13:42,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 09:13:42,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:13:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 09:13:42,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:13:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 09:13:42,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:13:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822351328] [2023-12-20 09:13:42,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:13:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190710552] [2023-12-20 09:13:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190710552] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:13:42,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:13:42,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-20 09:13:42,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231477241] [2023-12-20 09:13:42,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:13:42,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 09:13:42,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:13:42,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 09:13:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-12-20 09:13:42,550 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 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) [2023-12-20 09:13:42,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:13:42,700 INFO L93 Difference]: Finished difference Result 147 states and 192 transitions. [2023-12-20 09:13:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 09:13:42,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 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 31 [2023-12-20 09:13:42,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:13:42,701 INFO L225 Difference]: With dead ends: 147 [2023-12-20 09:13:42,701 INFO L226 Difference]: Without dead ends: 105 [2023-12-20 09:13:42,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-12-20 09:13:42,702 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 169 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 09:13:42,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 71 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 09:13:42,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-20 09:13:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2023-12-20 09:13:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 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) [2023-12-20 09:13:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2023-12-20 09:13:42,711 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 31 [2023-12-20 09:13:42,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:13:42,712 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2023-12-20 09:13:42,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 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) [2023-12-20 09:13:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2023-12-20 09:13:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 09:13:42,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:13:42,713 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:13:42,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 09:13:42,919 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 [2023-12-20 09:13:42,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:13:42,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:13:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1010214521, now seen corresponding path program 2 times [2023-12-20 09:13:42,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:13:42,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176372148] [2023-12-20 09:13:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:42,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:13:42,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:13:42,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102734584] [2023-12-20 09:13:42,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 09:13:42,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:13:42,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:13:42,948 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) [2023-12-20 09:13:43,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 09:13:43,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 09:13:43,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:13:43,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 09:13:43,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:13:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-20 09:13:43,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:13:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-20 09:13:43,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:13:43,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176372148] [2023-12-20 09:13:43,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:13:43,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102734584] [2023-12-20 09:13:43,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102734584] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:13:43,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:13:43,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-20 09:13:43,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132830966] [2023-12-20 09:13:43,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:13:43,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 09:13:43,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:13:43,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 09:13:43,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-12-20 09:13:43,378 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 25 states have internal predecessors, (41), 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) [2023-12-20 09:13:43,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:13:43,784 INFO L93 Difference]: Finished difference Result 297 states and 384 transitions. [2023-12-20 09:13:43,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-20 09:13:43,785 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 25 states have internal predecessors, (41), 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 55 [2023-12-20 09:13:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:13:43,786 INFO L225 Difference]: With dead ends: 297 [2023-12-20 09:13:43,786 INFO L226 Difference]: Without dead ends: 213 [2023-12-20 09:13:43,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 09:13:43,787 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 525 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 09:13:43,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 115 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 09:13:43,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-20 09:13:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 170. [2023-12-20 09:13:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.2899408284023668) internal successors, (218), 169 states have internal predecessors, (218), 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) [2023-12-20 09:13:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2023-12-20 09:13:43,800 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 55 [2023-12-20 09:13:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:13:43,800 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2023-12-20 09:13:43,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 25 states have internal predecessors, (41), 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) [2023-12-20 09:13:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2023-12-20 09:13:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 09:13:43,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:13:43,802 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:13:43,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 09:13:44,007 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 [2023-12-20 09:13:44,007 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:13:44,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:13:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash -848390151, now seen corresponding path program 3 times [2023-12-20 09:13:44,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:13:44,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840123479] [2023-12-20 09:13:44,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:44,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:13:44,025 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:13:44,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539142251] [2023-12-20 09:13:44,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 09:13:44,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:13:44,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:13:44,042 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) [2023-12-20 09:13:44,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 09:13:44,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-20 09:13:44,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:13:44,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 09:13:44,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:13:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-12-20 09:13:44,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:13:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-12-20 09:13:44,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:13:44,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840123479] [2023-12-20 09:13:44,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:13:44,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539142251] [2023-12-20 09:13:44,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539142251] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:13:44,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:13:44,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-20 09:13:44,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589982575] [2023-12-20 09:13:44,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:13:44,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 09:13:44,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:13:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 09:13:44,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 09:13:44,411 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2023-12-20 09:13:44,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:13:44,518 INFO L93 Difference]: Finished difference Result 765 states and 980 transitions. [2023-12-20 09:13:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 09:13:44,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) Word has length 103 [2023-12-20 09:13:44,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:13:44,521 INFO L225 Difference]: With dead ends: 765 [2023-12-20 09:13:44,522 INFO L226 Difference]: Without dead ends: 693 [2023-12-20 09:13:44,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-20 09:13:44,525 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 129 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 09:13:44,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 26 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 09:13:44,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-20 09:13:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 377. [2023-12-20 09:13:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.3138297872340425) internal successors, (494), 376 states have internal predecessors, (494), 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) [2023-12-20 09:13:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 494 transitions. [2023-12-20 09:13:44,559 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 494 transitions. Word has length 103 [2023-12-20 09:13:44,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:13:44,559 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 494 transitions. [2023-12-20 09:13:44,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2023-12-20 09:13:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 494 transitions. [2023-12-20 09:13:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-20 09:13:44,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:13:44,563 INFO L195 NwaCegarLoop]: trace histogram [88, 88, 88, 22, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:13:44,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 09:13:44,768 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 [2023-12-20 09:13:44,768 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:13:44,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:13:44,768 INFO L85 PathProgramCache]: Analyzing trace with hash -510070077, now seen corresponding path program 4 times [2023-12-20 09:13:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:13:44,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148825433] [2023-12-20 09:13:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:44,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:13:44,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:13:44,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355166347] [2023-12-20 09:13:44,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 09:13:44,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:13:44,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:13:44,821 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:13:44,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 09:13:44,992 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 09:13:44,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:13:44,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 09:13:45,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:13:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12112 backedges. 651 proven. 9062 refuted. 0 times theorem prover too weak. 2399 trivial. 0 not checked. [2023-12-20 09:13:45,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:13:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12112 backedges. 651 proven. 9062 refuted. 0 times theorem prover too weak. 2399 trivial. 0 not checked. [2023-12-20 09:13:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:13:46,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148825433] [2023-12-20 09:13:46,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:13:46,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355166347] [2023-12-20 09:13:46,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355166347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:13:46,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:13:46,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2023-12-20 09:13:46,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681521493] [2023-12-20 09:13:46,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:13:46,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 09:13:46,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:13:46,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 09:13:46,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1145, Invalid=2161, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 09:13:46,563 INFO L87 Difference]: Start difference. First operand 377 states and 494 transitions. Second operand has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 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) [2023-12-20 09:13:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:13:49,114 INFO L93 Difference]: Finished difference Result 1964 states and 2418 transitions. [2023-12-20 09:13:49,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-12-20 09:13:49,115 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 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 310 [2023-12-20 09:13:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:13:49,122 INFO L225 Difference]: With dead ends: 1964 [2023-12-20 09:13:49,122 INFO L226 Difference]: Without dead ends: 1892 [2023-12-20 09:13:49,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10069 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=8406, Invalid=18000, Unknown=0, NotChecked=0, Total=26406 [2023-12-20 09:13:49,130 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 1120 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 09:13:49,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 958 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 09:13:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2023-12-20 09:13:49,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 791. [2023-12-20 09:13:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.3240506329113924) internal successors, (1046), 790 states have internal predecessors, (1046), 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) [2023-12-20 09:13:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1046 transitions. [2023-12-20 09:13:49,178 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1046 transitions. Word has length 310 [2023-12-20 09:13:49,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:13:49,179 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1046 transitions. [2023-12-20 09:13:49,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 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) [2023-12-20 09:13:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1046 transitions. [2023-12-20 09:13:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-12-20 09:13:49,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:13:49,190 INFO L195 NwaCegarLoop]: trace histogram [220, 220, 220, 22, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:13:49,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 09:13:49,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 09:13:49,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:13:49,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:13:49,397 INFO L85 PathProgramCache]: Analyzing trace with hash -305149, now seen corresponding path program 5 times [2023-12-20 09:13:49,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:13:49,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942391608] [2023-12-20 09:13:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:13:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:13:49,435 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:13:49,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114007938] [2023-12-20 09:13:49,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 09:13:49,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:13:49,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:13:49,448 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:13:49,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 09:28:28,603 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 [2023-12-20 09:28:28,631 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 09:28:29,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 09:28:29,831 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forcibly destroying the process [2023-12-20 09:28:29,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-20 09:28:29,887 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 09:28:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:28:29,887 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 725 with TraceHistMax 220,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-20 09:28:29,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 137 [2023-12-20 09:28:29,891 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1] [2023-12-20 09:28:29,893 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 09:28:29,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 09:28:29 BoogieIcfgContainer [2023-12-20 09:28:29,894 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 09:28:29,894 INFO L158 Benchmark]: Toolchain (without parser) took 889781.02ms. Allocated memory was 196.1MB in the beginning and 339.7MB in the end (delta: 143.7MB). Free memory was 130.3MB in the beginning and 217.0MB in the end (delta: -86.7MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2023-12-20 09:28:29,894 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 196.1MB. Free memory was 145.2MB in the beginning and 145.1MB in the end (delta: 80.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 09:28:29,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.03ms. Allocated memory is still 196.1MB. Free memory was 130.0MB in the beginning and 119.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-20 09:28:29,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.01ms. Allocated memory is still 196.1MB. Free memory was 119.0MB in the beginning and 117.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 09:28:29,895 INFO L158 Benchmark]: Boogie Preprocessor took 39.15ms. Allocated memory is still 196.1MB. Free memory was 117.4MB in the beginning and 115.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 09:28:29,895 INFO L158 Benchmark]: RCFGBuilder took 279.68ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 115.3MB in the beginning and 195.1MB in the end (delta: -79.8MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2023-12-20 09:28:29,895 INFO L158 Benchmark]: TraceAbstraction took 889277.29ms. Allocated memory was 235.9MB in the beginning and 339.7MB in the end (delta: 103.8MB). Free memory was 194.6MB in the beginning and 217.0MB in the end (delta: -22.4MB). Peak memory consumption was 81.4MB. Max. memory is 8.0GB. [2023-12-20 09:28:29,910 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 196.1MB. Free memory was 145.2MB in the beginning and 145.1MB in the end (delta: 80.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 156.03ms. Allocated memory is still 196.1MB. Free memory was 130.0MB in the beginning and 119.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.01ms. Allocated memory is still 196.1MB. Free memory was 119.0MB in the beginning and 117.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.15ms. Allocated memory is still 196.1MB. Free memory was 117.4MB in the beginning and 115.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 279.68ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 115.3MB in the beginning and 195.1MB in the end (delta: -79.8MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * TraceAbstraction took 889277.29ms. Allocated memory was 235.9MB in the beginning and 339.7MB in the end (delta: 103.8MB). Free memory was 194.6MB in the beginning and 217.0MB in the end (delta: -22.4MB). Peak memory consumption was 81.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was analyzing trace of length 725 with TraceHistMax 220,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 889.2s, OverallIterations: 9, TraceHistogramMax: 220, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2152 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2152 mSDsluCounter, 1261 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1089 mSDsCounter, 860 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2050 IncrementalHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 860 mSolverCounterUnsat, 172 mSDtfsCounter, 2050 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1252 GetRequests, 1018 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10397 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=791occurred in iteration=8, InterpolantAutomatonStates: 176, 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, 8 MinimizatonAttempts, 1536 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 549 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1048 ConstructedInterpolants, 0 QuantifiedInterpolants, 4834 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1518 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 8394/26652 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