/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-patterns/array21_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:18:44,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:18:44,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:18:44,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:18:44,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:18:44,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:18:44,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:18:44,356 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:18:44,357 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:18:44,359 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:18:44,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:18:44,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:18:44,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:18:44,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:18:44,362 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:18:44,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:18:44,362 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:18:44,362 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:18:44,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:18:44,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:18:44,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:18:44,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:18:44,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:18:44,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:18:44,364 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:18:44,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:18:44,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:18:44,364 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:18:44,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:18:44,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:18:44,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:18:44,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:18:44,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:18:44,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:18:44,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:18:44,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:18:44,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:18:44,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:18:44,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:18:44,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:18:44,367 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:18:44,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:18:44,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:18:44,367 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:18:44,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:18:44,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:18:44,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:18:44,571 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:18:44,571 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:18:44,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array21_pattern.c [2023-12-16 00:18:45,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:18:45,771 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:18:45,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array21_pattern.c [2023-12-16 00:18:45,777 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0867b1e51/da4684ba4e444a9eb7f72a57e717a758/FLAGe2571c1a7 [2023-12-16 00:18:45,789 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0867b1e51/da4684ba4e444a9eb7f72a57e717a758 [2023-12-16 00:18:45,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:18:45,792 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:18:45,794 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:18:45,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:18:45,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:18:45,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:45,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da3899d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45, skipping insertion in model container [2023-12-16 00:18:45,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:45,815 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:18:45,926 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array21_pattern.c[1340,1353] [2023-12-16 00:18:45,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:18:45,959 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:18:45,968 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array21_pattern.c[1340,1353] [2023-12-16 00:18:45,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:18:45,997 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:18:45,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45 WrapperNode [2023-12-16 00:18:45,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:18:45,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:18:45,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:18:45,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:18:46,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,033 INFO L138 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 107 [2023-12-16 00:18:46,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:18:46,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:18:46,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:18:46,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:18:46,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,058 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-16 00:18:46,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:18:46,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:18:46,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:18:46,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:18:46,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (1/1) ... [2023-12-16 00:18:46,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:18:46,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:46,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 00:18:46,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 00:18:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2023-12-16 00:18:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2023-12-16 00:18:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:18:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 00:18:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 00:18:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:18:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 00:18:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 00:18:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 00:18:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 00:18:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:18:46,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:18:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 00:18:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 00:18:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 00:18:46,168 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:18:46,169 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:18:46,295 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:18:46,321 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:18:46,321 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-16 00:18:46,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:18:46 BoogieIcfgContainer [2023-12-16 00:18:46,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:18:46,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:18:46,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:18:46,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:18:46,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:18:45" (1/3) ... [2023-12-16 00:18:46,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b08654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:18:46, skipping insertion in model container [2023-12-16 00:18:46,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:18:45" (2/3) ... [2023-12-16 00:18:46,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b08654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:18:46, skipping insertion in model container [2023-12-16 00:18:46,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:18:46" (3/3) ... [2023-12-16 00:18:46,327 INFO L112 eAbstractionObserver]: Analyzing ICFG array21_pattern.c [2023-12-16 00:18:46,338 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:18:46,339 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 00:18:46,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:18:46,384 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;@56c58d2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:18:46,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 00:18:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 00:18:46,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 00:18:46,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:46,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:46,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:46,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:46,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1644752152, now seen corresponding path program 1 times [2023-12-16 00:18:46,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:46,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534053680] [2023-12-16 00:18:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:46,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:18:46,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534053680] [2023-12-16 00:18:46,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 00:18:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737492219] [2023-12-16 00:18:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:46,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:46,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:46,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:18:46,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:18:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:46,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 00:18:46,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:18:46,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:18:46,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737492219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:18:46,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:18:46,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:18:46,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806241510] [2023-12-16 00:18:46,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:18:46,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:18:46,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:18:46,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:18:46,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:18:46,690 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 00:18:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:18:46,719 INFO L93 Difference]: Finished difference Result 68 states and 106 transitions. [2023-12-16 00:18:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:18:46,721 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-16 00:18:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:18:46,727 INFO L225 Difference]: With dead ends: 68 [2023-12-16 00:18:46,727 INFO L226 Difference]: Without dead ends: 33 [2023-12-16 00:18:46,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:18:46,733 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:18:46,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:18:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-16 00:18:46,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-16 00:18:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 00:18:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2023-12-16 00:18:46,759 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 14 [2023-12-16 00:18:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:18:46,760 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2023-12-16 00:18:46,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 00:18:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2023-12-16 00:18:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 00:18:46,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:46,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:46,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:18:46,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 00:18:46,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:46,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:46,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1106245937, now seen corresponding path program 1 times [2023-12-16 00:18:46,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:46,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758526551] [2023-12-16 00:18:46,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:46,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:46,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:18:46,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936583556] [2023-12-16 00:18:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:46,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:46,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:46,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:18:47,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:18:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:47,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 00:18:47,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 00:18:47,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:18:47,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:18:47,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758526551] [2023-12-16 00:18:47,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:18:47,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936583556] [2023-12-16 00:18:47,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936583556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:18:47,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:18:47,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:18:47,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928392354] [2023-12-16 00:18:47,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:18:47,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:18:47,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:18:47,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:18:47,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:18:47,153 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 00:18:47,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:18:47,281 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2023-12-16 00:18:47,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 00:18:47,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-12-16 00:18:47,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:18:47,288 INFO L225 Difference]: With dead ends: 70 [2023-12-16 00:18:47,288 INFO L226 Difference]: Without dead ends: 43 [2023-12-16 00:18:47,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-16 00:18:47,289 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 46 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:18:47,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 76 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:18:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-16 00:18:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2023-12-16 00:18:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 00:18:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2023-12-16 00:18:47,310 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 34 [2023-12-16 00:18:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:18:47,310 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-12-16 00:18:47,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 00:18:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2023-12-16 00:18:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 00:18:47,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:47,312 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:47,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:18:47,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 00:18:47,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:47,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash -958824718, now seen corresponding path program 1 times [2023-12-16 00:18:47,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:47,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333849757] [2023-12-16 00:18:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:47,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:18:47,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569499306] [2023-12-16 00:18:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:47,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:47,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:47,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:18:47,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:18:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:47,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 00:18:47,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 00:18:47,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:18:47,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:18:47,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333849757] [2023-12-16 00:18:47,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:18:47,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569499306] [2023-12-16 00:18:47,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569499306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:18:47,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:18:47,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:18:47,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790480444] [2023-12-16 00:18:47,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:18:47,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:18:47,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:18:47,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:18:47,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:18:47,613 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 00:18:47,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:18:47,642 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2023-12-16 00:18:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:18:47,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-12-16 00:18:47,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:18:47,643 INFO L225 Difference]: With dead ends: 72 [2023-12-16 00:18:47,643 INFO L226 Difference]: Without dead ends: 41 [2023-12-16 00:18:47,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:18:47,644 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 23 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:18:47,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 70 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:18:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-16 00:18:47,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-16 00:18:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 00:18:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2023-12-16 00:18:47,649 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 40 [2023-12-16 00:18:47,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:18:47,649 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2023-12-16 00:18:47,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 00:18:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2023-12-16 00:18:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 00:18:47,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:47,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:47,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:18:47,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:47,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:47,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:47,860 INFO L85 PathProgramCache]: Analyzing trace with hash -465343306, now seen corresponding path program 1 times [2023-12-16 00:18:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:47,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819558877] [2023-12-16 00:18:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:47,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:18:47,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179319799] [2023-12-16 00:18:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:47,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:47,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:47,889 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:18:47,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:18:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:18:47,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 00:18:47,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 00:18:47,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:18:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 00:18:48,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:18:48,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819558877] [2023-12-16 00:18:48,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:18:48,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179319799] [2023-12-16 00:18:48,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179319799] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:18:48,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:18:48,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-16 00:18:48,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925635970] [2023-12-16 00:18:48,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:18:48,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 00:18:48,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:18:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 00:18:48,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-12-16 00:18:48,071 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 00:18:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:18:48,183 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2023-12-16 00:18:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:18:48,183 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 42 [2023-12-16 00:18:48,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:18:48,184 INFO L225 Difference]: With dead ends: 76 [2023-12-16 00:18:48,184 INFO L226 Difference]: Without dead ends: 43 [2023-12-16 00:18:48,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-12-16 00:18:48,185 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:18:48,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 113 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:18:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-16 00:18:48,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-16 00:18:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 00:18:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2023-12-16 00:18:48,190 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 42 [2023-12-16 00:18:48,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:18:48,190 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2023-12-16 00:18:48,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 00:18:48,190 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2023-12-16 00:18:48,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 00:18:48,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:48,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:48,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:18:48,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:48,396 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:48,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:48,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1367452082, now seen corresponding path program 2 times [2023-12-16 00:18:48,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:48,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144476880] [2023-12-16 00:18:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:48,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:48,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:18:48,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246612930] [2023-12-16 00:18:48,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 00:18:48,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:48,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:48,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:18:48,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:18:48,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 00:18:48,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:18:48,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 00:18:48,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 00:18:48,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:18:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 00:18:48,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:18:48,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144476880] [2023-12-16 00:18:48,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:18:48,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246612930] [2023-12-16 00:18:48,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246612930] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:18:48,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:18:48,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-16 00:18:48,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130683447] [2023-12-16 00:18:48,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:18:48,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 00:18:48,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:18:48,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 00:18:48,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:18:48,607 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 00:18:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:18:48,793 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2023-12-16 00:18:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 00:18:48,793 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2023-12-16 00:18:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:18:48,794 INFO L225 Difference]: With dead ends: 91 [2023-12-16 00:18:48,794 INFO L226 Difference]: Without dead ends: 61 [2023-12-16 00:18:48,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:18:48,795 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 41 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:18:48,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 141 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:18:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-16 00:18:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2023-12-16 00:18:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 00:18:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2023-12-16 00:18:48,802 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 44 [2023-12-16 00:18:48,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:18:48,802 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2023-12-16 00:18:48,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 00:18:48,803 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2023-12-16 00:18:48,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 00:18:48,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:18:48,803 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:18:48,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 00:18:49,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:49,009 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:18:49,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:18:49,010 INFO L85 PathProgramCache]: Analyzing trace with hash 160309039, now seen corresponding path program 3 times [2023-12-16 00:18:49,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:18:49,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579395351] [2023-12-16 00:18:49,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:18:49,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:18:49,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:18:49,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609307835] [2023-12-16 00:18:49,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 00:18:49,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:18:49,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:18:49,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:18:49,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 00:18:49,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-16 00:18:49,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:18:49,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-16 00:18:49,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:18:49,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 00:18:49,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-16 00:18:49,472 INFO L349 Elim1Store]: treesize reduction 54, result has 34.9 percent of original size [2023-12-16 00:18:49,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 35 [2023-12-16 00:18:49,569 INFO L349 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2023-12-16 00:18:49,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 53 [2023-12-16 00:18:51,222 INFO L349 Elim1Store]: treesize reduction 310, result has 60.7 percent of original size [2023-12-16 00:18:51,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 114 treesize of output 503 [2023-12-16 00:19:01,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:01,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 169 treesize of output 96 [2023-12-16 00:19:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:19:01,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:02,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:02,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579395351] [2023-12-16 00:19:02,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609307835] [2023-12-16 00:19:02,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609307835] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:19:02,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:19:02,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2023-12-16 00:19:02,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002013625] [2023-12-16 00:19:02,429 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:02,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 00:19:02,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 00:19:02,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1906, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 00:19:02,432 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 32 states, 32 states have (on average 1.4375) internal successors, (46), 30 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 00:19:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:04,589 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2023-12-16 00:19:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-16 00:19:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.4375) internal successors, (46), 30 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 54 [2023-12-16 00:19:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:04,591 INFO L225 Difference]: With dead ends: 113 [2023-12-16 00:19:04,591 INFO L226 Difference]: Without dead ends: 109 [2023-12-16 00:19:04,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=361, Invalid=2831, Unknown=0, NotChecked=0, Total=3192 [2023-12-16 00:19:04,593 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 83 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:04,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 460 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 00:19:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-16 00:19:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 91. [2023-12-16 00:19:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.24) internal successors, (93), 75 states have internal predecessors, (93), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 00:19:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 111 transitions. [2023-12-16 00:19:04,615 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 111 transitions. Word has length 54 [2023-12-16 00:19:04,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:04,615 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 111 transitions. [2023-12-16 00:19:04,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.4375) internal successors, (46), 30 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 00:19:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 111 transitions. [2023-12-16 00:19:04,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 00:19:04,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:04,617 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:04,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:04,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:04,823 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:04,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:04,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1833835667, now seen corresponding path program 1 times [2023-12-16 00:19:04,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:04,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189777900] [2023-12-16 00:19:04,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:04,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:04,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:04,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018610636] [2023-12-16 00:19:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:04,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:04,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:04,860 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:04,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 00:19:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:05,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:19:05,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-16 00:19:05,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:19:05,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:05,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189777900] [2023-12-16 00:19:05,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:05,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018610636] [2023-12-16 00:19:05,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018610636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:19:05,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:19:05,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:19:05,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399980774] [2023-12-16 00:19:05,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:19:05,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:19:05,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:19:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:19:05,035 INFO L87 Difference]: Start difference. First operand 91 states and 111 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 00:19:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:05,064 INFO L93 Difference]: Finished difference Result 129 states and 159 transitions. [2023-12-16 00:19:05,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:19:05,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2023-12-16 00:19:05,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:05,066 INFO L225 Difference]: With dead ends: 129 [2023-12-16 00:19:05,066 INFO L226 Difference]: Without dead ends: 94 [2023-12-16 00:19:05,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:19:05,068 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:05,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 72 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:19:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-16 00:19:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2023-12-16 00:19:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 77 states have internal predecessors, (95), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 00:19:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2023-12-16 00:19:05,102 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 54 [2023-12-16 00:19:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:05,104 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2023-12-16 00:19:05,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 00:19:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2023-12-16 00:19:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 00:19:05,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:05,109 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:05,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:05,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:05,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:05,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:05,320 INFO L85 PathProgramCache]: Analyzing trace with hash 110261106, now seen corresponding path program 4 times [2023-12-16 00:19:05,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:05,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005263987] [2023-12-16 00:19:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:05,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:05,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:05,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712190570] [2023-12-16 00:19:05,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 00:19:05,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:05,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:05,336 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:05,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 00:19:05,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 00:19:05,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:19:05,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 00:19:05,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-16 00:19:05,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 00:19:05,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:05,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005263987] [2023-12-16 00:19:05,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:05,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712190570] [2023-12-16 00:19:05,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712190570] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:05,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:05,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-12-16 00:19:05,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376909993] [2023-12-16 00:19:05,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:05,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 00:19:05,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 00:19:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 00:19:05,530 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:19:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:05,709 INFO L93 Difference]: Finished difference Result 295 states and 373 transitions. [2023-12-16 00:19:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 00:19:05,709 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2023-12-16 00:19:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:05,711 INFO L225 Difference]: With dead ends: 295 [2023-12-16 00:19:05,711 INFO L226 Difference]: Without dead ends: 217 [2023-12-16 00:19:05,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:19:05,712 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 130 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:05,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 162 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:19:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-16 00:19:05,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 167. [2023-12-16 00:19:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 138 states have (on average 1.2391304347826086) internal successors, (171), 138 states have internal predecessors, (171), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-16 00:19:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 205 transitions. [2023-12-16 00:19:05,745 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 205 transitions. Word has length 55 [2023-12-16 00:19:05,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:05,746 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 205 transitions. [2023-12-16 00:19:05,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:19:05,746 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 205 transitions. [2023-12-16 00:19:05,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 00:19:05,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:05,746 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:05,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:05,951 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 [2023-12-16 00:19:05,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:05,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash -652938780, now seen corresponding path program 5 times [2023-12-16 00:19:05,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:05,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132397088] [2023-12-16 00:19:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:05,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:05,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:05,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584465353] [2023-12-16 00:19:05,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 00:19:05,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:05,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:05,966 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:05,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 00:19:06,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-16 00:19:06,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:19:06,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 00:19:06,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-16 00:19:06,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-16 00:19:06,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:06,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132397088] [2023-12-16 00:19:06,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:06,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584465353] [2023-12-16 00:19:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584465353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:06,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:06,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-16 00:19:06,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326623448] [2023-12-16 00:19:06,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:06,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 00:19:06,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:06,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 00:19:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-16 00:19:06,198 INFO L87 Difference]: Start difference. First operand 167 states and 205 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:19:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:06,446 INFO L93 Difference]: Finished difference Result 305 states and 374 transitions. [2023-12-16 00:19:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 00:19:06,447 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2023-12-16 00:19:06,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:06,448 INFO L225 Difference]: With dead ends: 305 [2023-12-16 00:19:06,448 INFO L226 Difference]: Without dead ends: 176 [2023-12-16 00:19:06,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:19:06,449 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:06,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 185 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:19:06,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-16 00:19:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 146. [2023-12-16 00:19:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 00:19:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2023-12-16 00:19:06,479 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 57 [2023-12-16 00:19:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:06,481 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2023-12-16 00:19:06,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:19:06,481 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2023-12-16 00:19:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 00:19:06,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:06,483 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:06,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-16 00:19:06,687 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 [2023-12-16 00:19:06,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:06,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1942124404, now seen corresponding path program 6 times [2023-12-16 00:19:06,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:06,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289766805] [2023-12-16 00:19:06,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:06,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:06,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:06,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863148751] [2023-12-16 00:19:06,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 00:19:06,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:06,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:06,716 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:06,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 00:19:06,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-16 00:19:06,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:19:06,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 00:19:06,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-16 00:19:06,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-16 00:19:06,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:06,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289766805] [2023-12-16 00:19:06,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:06,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863148751] [2023-12-16 00:19:06,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863148751] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:06,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:06,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-16 00:19:06,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803456539] [2023-12-16 00:19:06,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:06,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 00:19:06,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:06,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 00:19:06,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-16 00:19:06,917 INFO L87 Difference]: Start difference. First operand 146 states and 179 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 00:19:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:07,100 INFO L93 Difference]: Finished difference Result 194 states and 233 transitions. [2023-12-16 00:19:07,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 00:19:07,100 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2023-12-16 00:19:07,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:07,101 INFO L225 Difference]: With dead ends: 194 [2023-12-16 00:19:07,101 INFO L226 Difference]: Without dead ends: 139 [2023-12-16 00:19:07,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-12-16 00:19:07,102 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 147 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:07,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 107 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:19:07,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-16 00:19:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2023-12-16 00:19:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 113 states have internal predecessors, (136), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 00:19:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 162 transitions. [2023-12-16 00:19:07,125 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 162 transitions. Word has length 59 [2023-12-16 00:19:07,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:07,125 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 162 transitions. [2023-12-16 00:19:07,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 00:19:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 162 transitions. [2023-12-16 00:19:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 00:19:07,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:07,126 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:07,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:07,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 00:19:07,331 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:07,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1569663080, now seen corresponding path program 1 times [2023-12-16 00:19:07,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:07,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812409320] [2023-12-16 00:19:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:07,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:07,347 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:07,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159016405] [2023-12-16 00:19:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:07,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:07,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:07,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:07,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 00:19:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:07,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 00:19:07,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-16 00:19:07,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:19:07,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:07,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812409320] [2023-12-16 00:19:07,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:07,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159016405] [2023-12-16 00:19:07,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159016405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:19:07,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:19:07,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:19:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450201075] [2023-12-16 00:19:07,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:19:07,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:19:07,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:07,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:19:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:19:07,417 INFO L87 Difference]: Start difference. First operand 135 states and 162 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 00:19:07,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:07,455 INFO L93 Difference]: Finished difference Result 228 states and 278 transitions. [2023-12-16 00:19:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:19:07,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2023-12-16 00:19:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:07,457 INFO L225 Difference]: With dead ends: 228 [2023-12-16 00:19:07,457 INFO L226 Difference]: Without dead ends: 152 [2023-12-16 00:19:07,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:19:07,458 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:07,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 146 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:19:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-16 00:19:07,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2023-12-16 00:19:07,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 119 states have (on average 1.1932773109243697) internal successors, (142), 119 states have internal predecessors, (142), 13 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2023-12-16 00:19:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 174 transitions. [2023-12-16 00:19:07,480 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 174 transitions. Word has length 60 [2023-12-16 00:19:07,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:07,480 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 174 transitions. [2023-12-16 00:19:07,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 00:19:07,480 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 174 transitions. [2023-12-16 00:19:07,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 00:19:07,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:07,481 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:07,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:07,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 00:19:07,685 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:07,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:07,685 INFO L85 PathProgramCache]: Analyzing trace with hash -468393209, now seen corresponding path program 1 times [2023-12-16 00:19:07,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:07,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101048313] [2023-12-16 00:19:07,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:07,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:07,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:07,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628056216] [2023-12-16 00:19:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:07,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:07,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:07,700 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:07,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 00:19:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:07,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 00:19:07,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-16 00:19:07,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:19:07,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:07,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101048313] [2023-12-16 00:19:07,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:07,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628056216] [2023-12-16 00:19:07,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628056216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:19:07,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:19:07,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:19:07,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599729529] [2023-12-16 00:19:07,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:19:07,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:19:07,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:07,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:19:07,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:19:07,773 INFO L87 Difference]: Start difference. First operand 144 states and 174 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:19:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:07,823 INFO L93 Difference]: Finished difference Result 256 states and 310 transitions. [2023-12-16 00:19:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:19:07,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2023-12-16 00:19:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:07,825 INFO L225 Difference]: With dead ends: 256 [2023-12-16 00:19:07,826 INFO L226 Difference]: Without dead ends: 161 [2023-12-16 00:19:07,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:19:07,827 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:07,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 142 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:19:07,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-16 00:19:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 150. [2023-12-16 00:19:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 125 states have (on average 1.184) internal successors, (148), 122 states have internal predecessors, (148), 13 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (19), 19 states have call predecessors, (19), 13 states have call successors, (19) [2023-12-16 00:19:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 180 transitions. [2023-12-16 00:19:07,851 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 180 transitions. Word has length 60 [2023-12-16 00:19:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:07,852 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 180 transitions. [2023-12-16 00:19:07,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:19:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 180 transitions. [2023-12-16 00:19:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 00:19:07,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:07,853 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:07,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-16 00:19:08,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 00:19:08,058 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:08,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:08,058 INFO L85 PathProgramCache]: Analyzing trace with hash 224708488, now seen corresponding path program 1 times [2023-12-16 00:19:08,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:08,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596834185] [2023-12-16 00:19:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:08,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:08,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:08,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194085534] [2023-12-16 00:19:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:08,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:08,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:08,067 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:08,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 00:19:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:08,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 00:19:08,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 00:19:08,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 00:19:08,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596834185] [2023-12-16 00:19:08,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194085534] [2023-12-16 00:19:08,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194085534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:08,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:08,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2023-12-16 00:19:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036964418] [2023-12-16 00:19:08,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:08,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 00:19:08,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 00:19:08,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:19:08,391 INFO L87 Difference]: Start difference. First operand 150 states and 180 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 4 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-16 00:19:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:08,740 INFO L93 Difference]: Finished difference Result 212 states and 245 transitions. [2023-12-16 00:19:08,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 00:19:08,740 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 4 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 60 [2023-12-16 00:19:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:08,742 INFO L225 Difference]: With dead ends: 212 [2023-12-16 00:19:08,742 INFO L226 Difference]: Without dead ends: 167 [2023-12-16 00:19:08,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:19:08,743 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 95 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:08,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 197 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:19:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-16 00:19:08,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 152. [2023-12-16 00:19:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 125 states have (on average 1.168) internal successors, (146), 125 states have internal predecessors, (146), 14 states have call successors, (14), 9 states have call predecessors, (14), 12 states have return successors, (18), 17 states have call predecessors, (18), 14 states have call successors, (18) [2023-12-16 00:19:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 178 transitions. [2023-12-16 00:19:08,770 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 178 transitions. Word has length 60 [2023-12-16 00:19:08,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:08,770 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 178 transitions. [2023-12-16 00:19:08,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 4 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-16 00:19:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 178 transitions. [2023-12-16 00:19:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:19:08,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:08,772 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:08,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-16 00:19:08,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 00:19:08,979 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:08,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:08,980 INFO L85 PathProgramCache]: Analyzing trace with hash 366254015, now seen corresponding path program 7 times [2023-12-16 00:19:08,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:08,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612368375] [2023-12-16 00:19:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:08,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:08,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:08,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481664685] [2023-12-16 00:19:08,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 00:19:08,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:08,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:08,988 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:08,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 00:19:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:19:09,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 00:19:09,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 27 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-16 00:19:09,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:19:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-16 00:19:09,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:19:09,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612368375] [2023-12-16 00:19:09,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:19:09,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481664685] [2023-12-16 00:19:09,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481664685] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:19:09,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 00:19:09,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-12-16 00:19:09,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476035832] [2023-12-16 00:19:09,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 00:19:09,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 00:19:09,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:19:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 00:19:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 00:19:09,173 INFO L87 Difference]: Start difference. First operand 152 states and 178 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:19:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:19:09,312 INFO L93 Difference]: Finished difference Result 195 states and 224 transitions. [2023-12-16 00:19:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:19:09,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2023-12-16 00:19:09,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:19:09,313 INFO L225 Difference]: With dead ends: 195 [2023-12-16 00:19:09,314 INFO L226 Difference]: Without dead ends: 148 [2023-12-16 00:19:09,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 106 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:19:09,314 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 115 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:19:09,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 199 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:19:09,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-16 00:19:09,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2023-12-16 00:19:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 119 states have (on average 1.1512605042016806) internal successors, (137), 118 states have internal predecessors, (137), 13 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (17), 17 states have call predecessors, (17), 13 states have call successors, (17) [2023-12-16 00:19:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 167 transitions. [2023-12-16 00:19:09,335 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 167 transitions. Word has length 61 [2023-12-16 00:19:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:19:09,335 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 167 transitions. [2023-12-16 00:19:09,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 00:19:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 167 transitions. [2023-12-16 00:19:09,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 00:19:09,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:19:09,336 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:19:09,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 00:19:09,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:09,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:19:09,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:19:09,541 INFO L85 PathProgramCache]: Analyzing trace with hash 986345860, now seen corresponding path program 8 times [2023-12-16 00:19:09,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:19:09,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201707433] [2023-12-16 00:19:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:19:09,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:19:09,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 00:19:09,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869238737] [2023-12-16 00:19:09,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 00:19:09,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:19:09,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:19:09,550 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:19:09,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 00:19:10,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 00:19:10,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:19:10,065 WARN L260 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 140 conjunts are in the unsatisfiable core [2023-12-16 00:19:10,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:19:10,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 00:19:10,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-16 00:19:10,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:10,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-12-16 00:19:10,384 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:10,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-12-16 00:19:10,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:10,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-12-16 00:19:10,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:10,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2023-12-16 00:19:10,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:10,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-12-16 00:19:10,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:10,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-12-16 00:19:10,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 00:19:10,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 Received shutdown request... [2023-12-16 00:20:02,325 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:20:02,349 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:20:03,190 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 00:20:03,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 00:20:03,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 00:20:03,391 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 71 with TraceHistMax 9,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 23 known predicates. [2023-12-16 00:20:03,394 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:20:03,396 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:20:03,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:20:03 BoogieIcfgContainer [2023-12-16 00:20:03,397 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:20:03,397 INFO L158 Benchmark]: Toolchain (without parser) took 77605.66ms. Allocated memory was 188.7MB in the beginning and 478.2MB in the end (delta: 289.4MB). Free memory was 142.9MB in the beginning and 316.5MB in the end (delta: -173.6MB). Peak memory consumption was 116.7MB. Max. memory is 8.0GB. [2023-12-16 00:20:03,397 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 188.7MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:20:03,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.22ms. Allocated memory is still 188.7MB. Free memory was 142.5MB in the beginning and 131.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 00:20:03,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.14ms. Allocated memory is still 188.7MB. Free memory was 131.0MB in the beginning and 129.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 00:20:03,398 INFO L158 Benchmark]: Boogie Preprocessor took 42.13ms. Allocated memory is still 188.7MB. Free memory was 129.3MB in the beginning and 127.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 00:20:03,398 INFO L158 Benchmark]: RCFGBuilder took 244.88ms. Allocated memory is still 188.7MB. Free memory was 127.2MB in the beginning and 112.9MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 00:20:03,398 INFO L158 Benchmark]: TraceAbstraction took 77073.98ms. Allocated memory was 188.7MB in the beginning and 478.2MB in the end (delta: 289.4MB). Free memory was 112.1MB in the beginning and 316.5MB in the end (delta: -204.3MB). Peak memory consumption was 86.3MB. Max. memory is 8.0GB. [2023-12-16 00:20:03,399 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 188.7MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.22ms. Allocated memory is still 188.7MB. Free memory was 142.5MB in the beginning and 131.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.14ms. Allocated memory is still 188.7MB. Free memory was 131.0MB in the beginning and 129.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.13ms. Allocated memory is still 188.7MB. Free memory was 129.3MB in the beginning and 127.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 244.88ms. Allocated memory is still 188.7MB. Free memory was 127.2MB in the beginning and 112.9MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 77073.98ms. Allocated memory was 188.7MB in the beginning and 478.2MB in the end (delta: 289.4MB). Free memory was 112.1MB in the beginning and 316.5MB in the end (delta: -204.3MB). Peak memory consumption was 86.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 33). Cancelled while NwaCegarLoop was analyzing trace of length 71 with TraceHistMax 9,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 23 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.0s, OverallIterations: 15, TraceHistogramMax: 9, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 817 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 787 mSDsluCounter, 2111 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1636 mSDsCounter, 283 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2668 IncrementalHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 283 mSolverCounterUnsat, 475 mSDtfsCounter, 2668 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1148 GetRequests, 925 SyntacticMatches, 20 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1688 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=8, InterpolantAutomatonStates: 161, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 153 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 14.3s InterpolantComputationTime, 708 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1051 ConstructedInterpolants, 24 QuantifiedInterpolants, 8596 SizeOfPredicates, 51 NumberOfNonLiveVariables, 2300 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 763/1006 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