/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:01:35,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:01:35,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:01:35,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:01:35,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:01:35,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:01:35,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:01:35,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:01:35,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:01:35,441 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:01:35,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:01:35,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:01:35,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:01:35,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:01:35,444 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:01:35,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:01:35,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:01:35,444 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:01:35,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:01:35,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:01:35,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:01:35,446 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:01:35,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:01:35,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:01:35,447 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:01:35,447 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:01:35,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:01:35,448 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:01:35,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:01:35,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:01:35,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:01:35,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:01:35,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:01:35,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:01:35,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:01:35,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:01:35,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:01:35,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:01:35,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:01:35,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:01:35,452 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:01:35,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:01:35,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:01:35,452 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:01:35,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:01:35,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:01:35,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:01:35,745 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:01:35,745 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:01:35,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2023-12-20 01:01:36,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:01:37,160 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:01:37,168 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2023-12-20 01:01:37,178 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e892dadf4/cbd69e595e3f408fb56b2359267db80d/FLAGcbefd3ccd [2023-12-20 01:01:37,190 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e892dadf4/cbd69e595e3f408fb56b2359267db80d [2023-12-20 01:01:37,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:01:37,194 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:01:37,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:01:37,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:01:37,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:01:37,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67481814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37, skipping insertion in model container [2023-12-20 01:01:37,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,243 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:01:37,408 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2023-12-20 01:01:37,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:01:37,421 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:01:37,455 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2023-12-20 01:01:37,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:01:37,469 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:01:37,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37 WrapperNode [2023-12-20 01:01:37,470 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:01:37,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:01:37,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:01:37,472 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:01:37,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,511 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2023-12-20 01:01:37,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:01:37,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:01:37,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:01:37,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:01:37,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,543 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 01:01:37,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:01:37,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:01:37,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:01:37,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:01:37,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (1/1) ... [2023-12-20 01:01:37,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:01:37,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:01:37,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 01:01:37,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 01:01:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:01:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:01:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:01:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:01:37,721 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:01:37,723 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:01:38,051 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:01:38,082 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:01:38,082 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:01:38,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:01:38 BoogieIcfgContainer [2023-12-20 01:01:38,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:01:38,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:01:38,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:01:38,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:01:38,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:01:37" (1/3) ... [2023-12-20 01:01:38,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5d4d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:01:38, skipping insertion in model container [2023-12-20 01:01:38,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:37" (2/3) ... [2023-12-20 01:01:38,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5d4d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:01:38, skipping insertion in model container [2023-12-20 01:01:38,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:01:38" (3/3) ... [2023-12-20 01:01:38,091 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2023-12-20 01:01:38,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:01:38,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:01:38,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:01:38,149 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;@47ee85da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:01:38,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:01:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.7666666666666666) internal successors, (106), 61 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 01:01:38,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:38,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:38,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:38,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:38,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1479912418, now seen corresponding path program 1 times [2023-12-20 01:01:38,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:38,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467859129] [2023-12-20 01:01:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:38,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:38,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467859129] [2023-12-20 01:01:38,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467859129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:38,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:38,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:01:38,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241228962] [2023-12-20 01:01:38,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:38,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:01:38,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:38,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:01:38,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:38,546 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.7666666666666666) internal successors, (106), 61 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:38,625 INFO L93 Difference]: Finished difference Result 145 states and 243 transitions. [2023-12-20 01:01:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:01:38,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-20 01:01:38,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:38,640 INFO L225 Difference]: With dead ends: 145 [2023-12-20 01:01:38,640 INFO L226 Difference]: Without dead ends: 99 [2023-12-20 01:01:38,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:38,648 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 62 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:38,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 270 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-20 01:01:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 60. [2023-12-20 01:01:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.423728813559322) internal successors, (84), 59 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 84 transitions. [2023-12-20 01:01:38,698 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 84 transitions. Word has length 22 [2023-12-20 01:01:38,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:38,699 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 84 transitions. [2023-12-20 01:01:38,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 84 transitions. [2023-12-20 01:01:38,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 01:01:38,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:38,701 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-12-20 01:01:38,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:01:38,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:38,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:38,703 INFO L85 PathProgramCache]: Analyzing trace with hash -781461804, now seen corresponding path program 1 times [2023-12-20 01:01:38,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568642301] [2023-12-20 01:01:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:38,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:38,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:38,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568642301] [2023-12-20 01:01:38,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568642301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:38,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:38,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:01:38,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418667389] [2023-12-20 01:01:38,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:38,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:01:38,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:38,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:01:38,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:01:38,858 INFO L87 Difference]: Start difference. First operand 60 states and 84 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:39,011 INFO L93 Difference]: Finished difference Result 216 states and 336 transitions. [2023-12-20 01:01:39,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:01:39,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-20 01:01:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:39,016 INFO L225 Difference]: With dead ends: 216 [2023-12-20 01:01:39,016 INFO L226 Difference]: Without dead ends: 177 [2023-12-20 01:01:39,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:01:39,018 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 354 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:39,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 311 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:01:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-20 01:01:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 97. [2023-12-20 01:01:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.5) internal successors, (144), 96 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 144 transitions. [2023-12-20 01:01:39,041 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 144 transitions. Word has length 38 [2023-12-20 01:01:39,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:39,042 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 144 transitions. [2023-12-20 01:01:39,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 144 transitions. [2023-12-20 01:01:39,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-20 01:01:39,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:39,043 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:39,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:01:39,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:39,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:39,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1531456910, now seen corresponding path program 1 times [2023-12-20 01:01:39,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:39,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010625554] [2023-12-20 01:01:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:39,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:39,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:39,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010625554] [2023-12-20 01:01:39,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010625554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:39,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:39,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:01:39,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904175545] [2023-12-20 01:01:39,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:39,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:01:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:01:39,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:39,289 INFO L87 Difference]: Start difference. First operand 97 states and 144 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:39,324 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2023-12-20 01:01:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:01:39,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-20 01:01:39,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:39,327 INFO L225 Difference]: With dead ends: 105 [2023-12-20 01:01:39,327 INFO L226 Difference]: Without dead ends: 103 [2023-12-20 01:01:39,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:39,329 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:39,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 233 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:39,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-20 01:01:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2023-12-20 01:01:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.48) internal successors, (148), 100 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 148 transitions. [2023-12-20 01:01:39,342 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 148 transitions. Word has length 39 [2023-12-20 01:01:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:39,342 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 148 transitions. [2023-12-20 01:01:39,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 148 transitions. [2023-12-20 01:01:39,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 01:01:39,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:39,344 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:39,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:01:39,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:39,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:39,345 INFO L85 PathProgramCache]: Analyzing trace with hash 231554364, now seen corresponding path program 1 times [2023-12-20 01:01:39,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:39,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16882685] [2023-12-20 01:01:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:39,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16882685] [2023-12-20 01:01:39,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16882685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:39,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:39,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:39,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035381452] [2023-12-20 01:01:39,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:39,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:39,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:39,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:39,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:39,431 INFO L87 Difference]: Start difference. First operand 101 states and 148 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:39,449 INFO L93 Difference]: Finished difference Result 247 states and 378 transitions. [2023-12-20 01:01:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:39,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-20 01:01:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:39,451 INFO L225 Difference]: With dead ends: 247 [2023-12-20 01:01:39,451 INFO L226 Difference]: Without dead ends: 167 [2023-12-20 01:01:39,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:39,462 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:39,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:39,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-20 01:01:39,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2023-12-20 01:01:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5121951219512195) internal successors, (248), 164 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2023-12-20 01:01:39,479 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 40 [2023-12-20 01:01:39,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:39,480 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2023-12-20 01:01:39,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,481 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2023-12-20 01:01:39,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 01:01:39,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:39,483 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:39,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:01:39,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:39,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1940057635, now seen corresponding path program 1 times [2023-12-20 01:01:39,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:39,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147917676] [2023-12-20 01:01:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:39,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:39,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147917676] [2023-12-20 01:01:39,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147917676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:39,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:39,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:39,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147085714] [2023-12-20 01:01:39,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:39,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:39,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:39,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:39,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:39,555 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:39,579 INFO L93 Difference]: Finished difference Result 311 states and 477 transitions. [2023-12-20 01:01:39,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:39,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-20 01:01:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:39,582 INFO L225 Difference]: With dead ends: 311 [2023-12-20 01:01:39,582 INFO L226 Difference]: Without dead ends: 231 [2023-12-20 01:01:39,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:39,584 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 51 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:39,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 181 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-20 01:01:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2023-12-20 01:01:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.5175438596491229) internal successors, (346), 228 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 346 transitions. [2023-12-20 01:01:39,615 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 346 transitions. Word has length 40 [2023-12-20 01:01:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:39,616 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 346 transitions. [2023-12-20 01:01:39,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 346 transitions. [2023-12-20 01:01:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 01:01:39,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:39,617 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:39,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:01:39,617 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:39,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1445773387, now seen corresponding path program 1 times [2023-12-20 01:01:39,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185585048] [2023-12-20 01:01:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:39,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:39,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:39,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185585048] [2023-12-20 01:01:39,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185585048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:39,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:39,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:39,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981995853] [2023-12-20 01:01:39,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:39,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:39,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:39,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:39,670 INFO L87 Difference]: Start difference. First operand 229 states and 346 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:39,697 INFO L93 Difference]: Finished difference Result 593 states and 908 transitions. [2023-12-20 01:01:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:39,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-20 01:01:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:39,700 INFO L225 Difference]: With dead ends: 593 [2023-12-20 01:01:39,701 INFO L226 Difference]: Without dead ends: 387 [2023-12-20 01:01:39,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:39,705 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 43 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:39,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 168 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-12-20 01:01:39,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 385. [2023-12-20 01:01:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5052083333333333) internal successors, (578), 384 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 578 transitions. [2023-12-20 01:01:39,734 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 578 transitions. Word has length 41 [2023-12-20 01:01:39,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:39,736 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 578 transitions. [2023-12-20 01:01:39,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 578 transitions. [2023-12-20 01:01:39,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 01:01:39,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:39,739 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:39,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:01:39,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:39,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:39,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1919502123, now seen corresponding path program 1 times [2023-12-20 01:01:39,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:39,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541558839] [2023-12-20 01:01:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:39,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:39,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:39,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541558839] [2023-12-20 01:01:39,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541558839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:39,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:39,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:39,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723959706] [2023-12-20 01:01:39,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:39,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:39,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:39,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:39,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:39,814 INFO L87 Difference]: Start difference. First operand 385 states and 578 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:39,851 INFO L93 Difference]: Finished difference Result 1013 states and 1520 transitions. [2023-12-20 01:01:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:39,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-20 01:01:39,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:39,856 INFO L225 Difference]: With dead ends: 1013 [2023-12-20 01:01:39,857 INFO L226 Difference]: Without dead ends: 651 [2023-12-20 01:01:39,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:39,858 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 47 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:39,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 181 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-12-20 01:01:39,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 649. [2023-12-20 01:01:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 1.4691358024691359) internal successors, (952), 648 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 952 transitions. [2023-12-20 01:01:39,891 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 952 transitions. Word has length 41 [2023-12-20 01:01:39,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:39,892 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 952 transitions. [2023-12-20 01:01:39,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 952 transitions. [2023-12-20 01:01:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 01:01:39,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:39,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:39,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:01:39,895 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:39,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:39,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1974468253, now seen corresponding path program 1 times [2023-12-20 01:01:39,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:39,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032691865] [2023-12-20 01:01:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:39,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:40,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:40,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032691865] [2023-12-20 01:01:40,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032691865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:40,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:40,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:40,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162876198] [2023-12-20 01:01:40,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:40,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:40,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:40,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:40,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:40,016 INFO L87 Difference]: Start difference. First operand 649 states and 952 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:40,042 INFO L93 Difference]: Finished difference Result 1277 states and 1882 transitions. [2023-12-20 01:01:40,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:40,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-20 01:01:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:40,046 INFO L225 Difference]: With dead ends: 1277 [2023-12-20 01:01:40,046 INFO L226 Difference]: Without dead ends: 651 [2023-12-20 01:01:40,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:40,048 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 41 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:40,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 172 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:40,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-12-20 01:01:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 649. [2023-12-20 01:01:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 1.4506172839506173) internal successors, (940), 648 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 940 transitions. [2023-12-20 01:01:40,072 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 940 transitions. Word has length 58 [2023-12-20 01:01:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:40,072 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 940 transitions. [2023-12-20 01:01:40,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 940 transitions. [2023-12-20 01:01:40,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 01:01:40,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:40,073 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:40,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:01:40,073 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:40,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:40,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1468182908, now seen corresponding path program 1 times [2023-12-20 01:01:40,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:40,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720291164] [2023-12-20 01:01:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:40,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:40,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:40,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720291164] [2023-12-20 01:01:40,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720291164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:40,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:40,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:40,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754576662] [2023-12-20 01:01:40,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:40,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:40,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:40,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:40,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:40,182 INFO L87 Difference]: Start difference. First operand 649 states and 940 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:40,203 INFO L93 Difference]: Finished difference Result 965 states and 1400 transitions. [2023-12-20 01:01:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:40,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-20 01:01:40,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:40,207 INFO L225 Difference]: With dead ends: 965 [2023-12-20 01:01:40,208 INFO L226 Difference]: Without dead ends: 339 [2023-12-20 01:01:40,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:40,209 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 35 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:40,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 153 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-20 01:01:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2023-12-20 01:01:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.4166666666666667) internal successors, (476), 336 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 476 transitions. [2023-12-20 01:01:40,225 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 476 transitions. Word has length 58 [2023-12-20 01:01:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:40,226 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 476 transitions. [2023-12-20 01:01:40,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 476 transitions. [2023-12-20 01:01:40,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 01:01:40,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:40,227 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:40,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:01:40,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:40,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash 483939365, now seen corresponding path program 1 times [2023-12-20 01:01:40,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:40,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987767571] [2023-12-20 01:01:40,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:40,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:01:40,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:40,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987767571] [2023-12-20 01:01:40,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987767571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:01:40,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573415106] [2023-12-20 01:01:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:40,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:01:40,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:01:40,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:01:40,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 01:01:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:40,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 01:01:40,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:01:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:01:40,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:01:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:01:41,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573415106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:01:41,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:01:41,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-12-20 01:01:41,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726328356] [2023-12-20 01:01:41,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:01:41,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 01:01:41,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:41,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 01:01:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:01:41,069 INFO L87 Difference]: Start difference. First operand 337 states and 476 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:41,127 INFO L93 Difference]: Finished difference Result 953 states and 1372 transitions. [2023-12-20 01:01:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:01:41,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-20 01:01:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:41,131 INFO L225 Difference]: With dead ends: 953 [2023-12-20 01:01:41,131 INFO L226 Difference]: Without dead ends: 735 [2023-12-20 01:01:41,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:01:41,133 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 239 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:41,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 491 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-12-20 01:01:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 729. [2023-12-20 01:01:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.4230769230769231) internal successors, (1036), 728 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:41,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1036 transitions. [2023-12-20 01:01:41,156 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1036 transitions. Word has length 58 [2023-12-20 01:01:41,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:41,156 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1036 transitions. [2023-12-20 01:01:41,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:41,157 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1036 transitions. [2023-12-20 01:01:41,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 01:01:41,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:41,157 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:41,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 01:01:41,364 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,SelfDestructingSolverStorable9 [2023-12-20 01:01:41,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:41,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:41,365 INFO L85 PathProgramCache]: Analyzing trace with hash 297441262, now seen corresponding path program 1 times [2023-12-20 01:01:41,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:41,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103502660] [2023-12-20 01:01:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:41,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:01:41,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:41,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103502660] [2023-12-20 01:01:41,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103502660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:41,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:41,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:01:41,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767486214] [2023-12-20 01:01:41,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:41,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:01:41,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:41,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:01:41,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:01:41,446 INFO L87 Difference]: Start difference. First operand 729 states and 1036 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:41,523 INFO L93 Difference]: Finished difference Result 1757 states and 2524 transitions. [2023-12-20 01:01:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:01:41,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 01:01:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:41,530 INFO L225 Difference]: With dead ends: 1757 [2023-12-20 01:01:41,530 INFO L226 Difference]: Without dead ends: 1389 [2023-12-20 01:01:41,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:01:41,531 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 221 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:41,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 349 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2023-12-20 01:01:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1075. [2023-12-20 01:01:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 1.4208566108007448) internal successors, (1526), 1074 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:41,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1526 transitions. [2023-12-20 01:01:41,570 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1526 transitions. Word has length 59 [2023-12-20 01:01:41,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:41,570 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1526 transitions. [2023-12-20 01:01:41,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:41,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1526 transitions. [2023-12-20 01:01:41,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 01:01:41,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:41,571 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:41,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:01:41,572 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:41,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:41,572 INFO L85 PathProgramCache]: Analyzing trace with hash 921940976, now seen corresponding path program 1 times [2023-12-20 01:01:41,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:41,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111097786] [2023-12-20 01:01:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:41,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:01:41,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:41,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111097786] [2023-12-20 01:01:41,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111097786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:41,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:41,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:01:41,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110015501] [2023-12-20 01:01:41,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:41,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:01:41,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:41,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:01:41,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:01:41,652 INFO L87 Difference]: Start difference. First operand 1075 states and 1526 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:41,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:41,742 INFO L93 Difference]: Finished difference Result 2103 states and 3014 transitions. [2023-12-20 01:01:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:01:41,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 01:01:41,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:41,750 INFO L225 Difference]: With dead ends: 2103 [2023-12-20 01:01:41,750 INFO L226 Difference]: Without dead ends: 1735 [2023-12-20 01:01:41,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:01:41,770 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 218 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:41,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 390 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2023-12-20 01:01:41,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1421. [2023-12-20 01:01:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.419718309859155) internal successors, (2016), 1420 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2016 transitions. [2023-12-20 01:01:41,818 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2016 transitions. Word has length 59 [2023-12-20 01:01:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:41,818 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 2016 transitions. [2023-12-20 01:01:41,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:41,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2016 transitions. [2023-12-20 01:01:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 01:01:41,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:41,819 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:41,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:01:41,820 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:41,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:41,820 INFO L85 PathProgramCache]: Analyzing trace with hash -171590031, now seen corresponding path program 1 times [2023-12-20 01:01:41,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:41,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845275863] [2023-12-20 01:01:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:41,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:01:41,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:41,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845275863] [2023-12-20 01:01:41,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845275863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:41,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:41,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:01:41,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150730271] [2023-12-20 01:01:41,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:41,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:01:41,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:41,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:01:41,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:01:41,904 INFO L87 Difference]: Start difference. First operand 1421 states and 2016 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:41,983 INFO L93 Difference]: Finished difference Result 2301 states and 3284 transitions. [2023-12-20 01:01:41,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:01:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 01:01:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:41,991 INFO L225 Difference]: With dead ends: 2301 [2023-12-20 01:01:41,992 INFO L226 Difference]: Without dead ends: 2027 [2023-12-20 01:01:41,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:01:41,995 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 214 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:41,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 357 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2023-12-20 01:01:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1713. [2023-12-20 01:01:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1712 states have (on average 1.4170560747663552) internal successors, (2426), 1712 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2426 transitions. [2023-12-20 01:01:42,064 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2426 transitions. Word has length 59 [2023-12-20 01:01:42,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:42,065 INFO L495 AbstractCegarLoop]: Abstraction has 1713 states and 2426 transitions. [2023-12-20 01:01:42,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:42,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2426 transitions. [2023-12-20 01:01:42,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 01:01:42,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:42,070 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:42,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:01:42,070 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:42,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -798404966, now seen corresponding path program 1 times [2023-12-20 01:01:42,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:42,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271076848] [2023-12-20 01:01:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:42,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:42,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:42,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271076848] [2023-12-20 01:01:42,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271076848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:42,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:42,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351514631] [2023-12-20 01:01:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:42,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:42,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:42,139 INFO L87 Difference]: Start difference. First operand 1713 states and 2426 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:42,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:42,170 INFO L93 Difference]: Finished difference Result 2448 states and 3457 transitions. [2023-12-20 01:01:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:42,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 01:01:42,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:42,174 INFO L225 Difference]: With dead ends: 2448 [2023-12-20 01:01:42,174 INFO L226 Difference]: Without dead ends: 758 [2023-12-20 01:01:42,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:42,179 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 21 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:42,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:42,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2023-12-20 01:01:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 731. [2023-12-20 01:01:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 1.384931506849315) internal successors, (1011), 730 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1011 transitions. [2023-12-20 01:01:42,203 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1011 transitions. Word has length 62 [2023-12-20 01:01:42,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:42,203 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 1011 transitions. [2023-12-20 01:01:42,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:42,204 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1011 transitions. [2023-12-20 01:01:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 01:01:42,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:42,204 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 01:01:42,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:01:42,205 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:42,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:42,205 INFO L85 PathProgramCache]: Analyzing trace with hash -853694343, now seen corresponding path program 1 times [2023-12-20 01:01:42,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:42,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313264701] [2023-12-20 01:01:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:42,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:42,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313264701] [2023-12-20 01:01:42,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313264701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:01:42,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250165252] [2023-12-20 01:01:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:42,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:01:42,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:01:42,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:01:42,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 01:01:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:42,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 01:01:42,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:01:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:43,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:01:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:45,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250165252] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:01:45,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:01:45,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 14] total 31 [2023-12-20 01:01:45,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121667156] [2023-12-20 01:01:45,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:01:45,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:01:45,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:01:45,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:01:45,673 INFO L87 Difference]: Start difference. First operand 731 states and 1011 transitions. Second operand has 32 states, 32 states have (on average 5.21875) internal successors, (167), 31 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:00,710 INFO L93 Difference]: Finished difference Result 9730 states and 13089 transitions. [2023-12-20 01:02:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-12-20 01:02:00,711 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.21875) internal successors, (167), 31 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 01:02:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:00,741 INFO L225 Difference]: With dead ends: 9730 [2023-12-20 01:02:00,741 INFO L226 Difference]: Without dead ends: 9034 [2023-12-20 01:02:00,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17562 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=6734, Invalid=36738, Unknown=0, NotChecked=0, Total=43472 [2023-12-20 01:02:00,758 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 2990 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 4987 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 5112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 4987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:00,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 4441 Invalid, 5112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 4987 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 01:02:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9034 states. [2023-12-20 01:02:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9034 to 4021. [2023-12-20 01:02:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4021 states, 4020 states have (on average 1.3323383084577114) internal successors, (5356), 4020 states have internal predecessors, (5356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 5356 transitions. [2023-12-20 01:02:00,967 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 5356 transitions. Word has length 62 [2023-12-20 01:02:00,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:00,968 INFO L495 AbstractCegarLoop]: Abstraction has 4021 states and 5356 transitions. [2023-12-20 01:02:00,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.21875) internal successors, (167), 31 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 5356 transitions. [2023-12-20 01:02:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 01:02:00,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:00,969 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 01:02:00,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 01:02:01,176 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,SelfDestructingSolverStorable14 [2023-12-20 01:02:01,176 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:01,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:01,177 INFO L85 PathProgramCache]: Analyzing trace with hash -217648871, now seen corresponding path program 1 times [2023-12-20 01:02:01,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:01,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320957467] [2023-12-20 01:02:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:01,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:01,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:01,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320957467] [2023-12-20 01:02:01,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320957467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:01,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:01,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:01,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546043090] [2023-12-20 01:02:01,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:01,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:01,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:01,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:01,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:01,223 INFO L87 Difference]: Start difference. First operand 4021 states and 5356 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:01,386 INFO L93 Difference]: Finished difference Result 10059 states and 13328 transitions. [2023-12-20 01:02:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:01,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 01:02:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:01,410 INFO L225 Difference]: With dead ends: 10059 [2023-12-20 01:02:01,411 INFO L226 Difference]: Without dead ends: 6220 [2023-12-20 01:02:01,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:01,424 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 40 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:01,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 155 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6220 states. [2023-12-20 01:02:01,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6220 to 6218. [2023-12-20 01:02:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 6217 states have (on average 1.3001447643557986) internal successors, (8083), 6217 states have internal predecessors, (8083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 8083 transitions. [2023-12-20 01:02:01,680 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 8083 transitions. Word has length 63 [2023-12-20 01:02:01,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:01,681 INFO L495 AbstractCegarLoop]: Abstraction has 6218 states and 8083 transitions. [2023-12-20 01:02:01,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:01,681 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 8083 transitions. [2023-12-20 01:02:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 01:02:01,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:01,682 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 01:02:01,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:02:01,682 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:01,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -278807545, now seen corresponding path program 1 times [2023-12-20 01:02:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:01,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890542207] [2023-12-20 01:02:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:01,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:01,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:01,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890542207] [2023-12-20 01:02:01,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890542207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:01,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:01,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:01,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462661563] [2023-12-20 01:02:01,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:01,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:01,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:01,723 INFO L87 Difference]: Start difference. First operand 6218 states and 8083 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:01,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:01,954 INFO L93 Difference]: Finished difference Result 15150 states and 19753 transitions. [2023-12-20 01:02:01,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:01,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 01:02:01,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:01,989 INFO L225 Difference]: With dead ends: 15150 [2023-12-20 01:02:01,989 INFO L226 Difference]: Without dead ends: 9138 [2023-12-20 01:02:01,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:01,999 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 34 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:01,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 189 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:02,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9138 states. [2023-12-20 01:02:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9138 to 8188. [2023-12-20 01:02:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 8187 states have (on average 1.2844753878099426) internal successors, (10516), 8187 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 10516 transitions. [2023-12-20 01:02:02,348 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 10516 transitions. Word has length 63 [2023-12-20 01:02:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:02,348 INFO L495 AbstractCegarLoop]: Abstraction has 8188 states and 10516 transitions. [2023-12-20 01:02:02,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 10516 transitions. [2023-12-20 01:02:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:02:02,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:02,350 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 01:02:02,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:02:02,350 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:02,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1269465301, now seen corresponding path program 1 times [2023-12-20 01:02:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:02,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294413907] [2023-12-20 01:02:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:02,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:03,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:03,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294413907] [2023-12-20 01:02:03,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294413907] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:02:03,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555737959] [2023-12-20 01:02:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:03,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:03,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:03,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:02:03,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 01:02:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:03,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 01:02:03,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:02:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:04,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:02:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:05,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555737959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:02:05,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:02:05,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 15] total 34 [2023-12-20 01:02:05,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426801861] [2023-12-20 01:02:05,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:02:05,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 01:02:05,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:05,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 01:02:05,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1031, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 01:02:05,088 INFO L87 Difference]: Start difference. First operand 8188 states and 10516 transitions. Second operand has 35 states, 35 states have (on average 4.942857142857143) internal successors, (173), 34 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:10,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:10,875 INFO L93 Difference]: Finished difference Result 80730 states and 103280 transitions. [2023-12-20 01:02:10,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-20 01:02:10,875 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.942857142857143) internal successors, (173), 34 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 01:02:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:11,023 INFO L225 Difference]: With dead ends: 80730 [2023-12-20 01:02:11,023 INFO L226 Difference]: Without dead ends: 72582 [2023-12-20 01:02:11,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5038 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2500, Invalid=11306, Unknown=0, NotChecked=0, Total=13806 [2023-12-20 01:02:11,048 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 2872 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2872 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:11,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2872 Valid, 3230 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 01:02:11,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72582 states. [2023-12-20 01:02:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72582 to 30475. [2023-12-20 01:02:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30475 states, 30474 states have (on average 1.27613703484938) internal successors, (38889), 30474 states have internal predecessors, (38889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:12,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30475 states to 30475 states and 38889 transitions. [2023-12-20 01:02:12,738 INFO L78 Accepts]: Start accepts. Automaton has 30475 states and 38889 transitions. Word has length 64 [2023-12-20 01:02:12,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:12,738 INFO L495 AbstractCegarLoop]: Abstraction has 30475 states and 38889 transitions. [2023-12-20 01:02:12,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.942857142857143) internal successors, (173), 34 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 30475 states and 38889 transitions. [2023-12-20 01:02:12,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 01:02:12,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:12,756 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:12,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 01:02:12,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 01:02:12,968 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:12,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:12,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1339928788, now seen corresponding path program 1 times [2023-12-20 01:02:12,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:12,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341747929] [2023-12-20 01:02:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:12,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-20 01:02:13,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:13,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341747929] [2023-12-20 01:02:13,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341747929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:13,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:13,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:13,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382048276] [2023-12-20 01:02:13,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:13,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:13,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:13,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:13,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:13,055 INFO L87 Difference]: Start difference. First operand 30475 states and 38889 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:13,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:13,844 INFO L93 Difference]: Finished difference Result 59597 states and 75627 transitions. [2023-12-20 01:02:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:13,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-20 01:02:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:13,898 INFO L225 Difference]: With dead ends: 59597 [2023-12-20 01:02:13,898 INFO L226 Difference]: Without dead ends: 32195 [2023-12-20 01:02:13,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:13,927 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 22 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:13,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 161 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32195 states. [2023-12-20 01:02:14,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32195 to 21424. [2023-12-20 01:02:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21424 states, 21423 states have (on average 1.2283993838397984) internal successors, (26316), 21423 states have internal predecessors, (26316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21424 states to 21424 states and 26316 transitions. [2023-12-20 01:02:14,725 INFO L78 Accepts]: Start accepts. Automaton has 21424 states and 26316 transitions. Word has length 102 [2023-12-20 01:02:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:14,725 INFO L495 AbstractCegarLoop]: Abstraction has 21424 states and 26316 transitions. [2023-12-20 01:02:14,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:14,725 INFO L276 IsEmpty]: Start isEmpty. Operand 21424 states and 26316 transitions. [2023-12-20 01:02:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 01:02:14,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:14,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:14,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:02:14,741 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:14,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:14,741 INFO L85 PathProgramCache]: Analyzing trace with hash 667186246, now seen corresponding path program 1 times [2023-12-20 01:02:14,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:14,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395758018] [2023-12-20 01:02:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:14,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 01:02:14,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:14,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395758018] [2023-12-20 01:02:14,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395758018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:14,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:14,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:14,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541212050] [2023-12-20 01:02:14,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:14,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:14,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:14,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:14,796 INFO L87 Difference]: Start difference. First operand 21424 states and 26316 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:15,671 INFO L93 Difference]: Finished difference Result 29893 states and 36543 transitions. [2023-12-20 01:02:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:15,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-20 01:02:15,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:15,698 INFO L225 Difference]: With dead ends: 29893 [2023-12-20 01:02:15,698 INFO L226 Difference]: Without dead ends: 19204 [2023-12-20 01:02:15,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:15,716 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 35 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:15,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 183 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19204 states. [2023-12-20 01:02:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19204 to 19202. [2023-12-20 01:02:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19202 states, 19201 states have (on average 1.2038435498151139) internal successors, (23115), 19201 states have internal predecessors, (23115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19202 states to 19202 states and 23115 transitions. [2023-12-20 01:02:16,468 INFO L78 Accepts]: Start accepts. Automaton has 19202 states and 23115 transitions. Word has length 103 [2023-12-20 01:02:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:16,469 INFO L495 AbstractCegarLoop]: Abstraction has 19202 states and 23115 transitions. [2023-12-20 01:02:16,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 19202 states and 23115 transitions. [2023-12-20 01:02:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 01:02:16,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:16,483 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:16,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:02:16,484 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:16,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:16,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1140821016, now seen corresponding path program 1 times [2023-12-20 01:02:16,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:16,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514723454] [2023-12-20 01:02:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:16,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:17,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514723454] [2023-12-20 01:02:17,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514723454] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:02:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365372882] [2023-12-20 01:02:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:17,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:17,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:02:17,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 01:02:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:17,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:02:17,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:02:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 24 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:18,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:02:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 24 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:20,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365372882] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:02:20,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:02:20,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 45 [2023-12-20 01:02:20,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145884587] [2023-12-20 01:02:20,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:02:20,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-20 01:02:20,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:20,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-20 01:02:20,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1818, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 01:02:20,761 INFO L87 Difference]: Start difference. First operand 19202 states and 23115 transitions. Second operand has 45 states, 45 states have (on average 6.4) internal successors, (288), 45 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:54,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:54,725 INFO L93 Difference]: Finished difference Result 70127 states and 84648 transitions. [2023-12-20 01:02:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2023-12-20 01:02:54,725 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.4) internal successors, (288), 45 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-20 01:02:54,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:54,802 INFO L225 Difference]: With dead ends: 70127 [2023-12-20 01:02:54,803 INFO L226 Difference]: Without dead ends: 54020 [2023-12-20 01:02:54,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29797 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=10601, Invalid=59889, Unknown=0, NotChecked=0, Total=70490 [2023-12-20 01:02:54,832 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 6077 mSDsluCounter, 3735 mSDsCounter, 0 mSdLazyCounter, 4654 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6077 SdHoareTripleChecker+Valid, 3847 SdHoareTripleChecker+Invalid, 4965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 4654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:54,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6077 Valid, 3847 Invalid, 4965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 4654 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-20 01:02:54,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54020 states. [2023-12-20 01:02:56,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54020 to 37043. [2023-12-20 01:02:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37043 states, 37042 states have (on average 1.215998056260461) internal successors, (45043), 37042 states have internal predecessors, (45043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37043 states to 37043 states and 45043 transitions. [2023-12-20 01:02:56,537 INFO L78 Accepts]: Start accepts. Automaton has 37043 states and 45043 transitions. Word has length 103 [2023-12-20 01:02:56,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:56,538 INFO L495 AbstractCegarLoop]: Abstraction has 37043 states and 45043 transitions. [2023-12-20 01:02:56,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.4) internal successors, (288), 45 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 37043 states and 45043 transitions. [2023-12-20 01:02:56,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 01:02:56,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:56,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:56,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 01:02:56,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:56,764 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:56,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:56,764 INFO L85 PathProgramCache]: Analyzing trace with hash 409868792, now seen corresponding path program 1 times [2023-12-20 01:02:56,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:56,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824305277] [2023-12-20 01:02:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:56,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:57,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:57,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824305277] [2023-12-20 01:02:57,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824305277] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:02:57,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131063113] [2023-12-20 01:02:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:57,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:57,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:57,726 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:02:57,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 01:02:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:57,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:02:57,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:02:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 25 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:58,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:00,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131063113] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:00,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 01:03:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149808540] [2023-12-20 01:03:00,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:00,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 01:03:00,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:00,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 01:03:00,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2023-12-20 01:03:00,198 INFO L87 Difference]: Start difference. First operand 37043 states and 45043 transitions. Second operand has 27 states, 27 states have (on average 8.62962962962963) internal successors, (233), 26 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:02,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:02,554 INFO L93 Difference]: Finished difference Result 53675 states and 65192 transitions. [2023-12-20 01:03:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 01:03:02,555 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.62962962962963) internal successors, (233), 26 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 01:03:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:02,601 INFO L225 Difference]: With dead ends: 53675 [2023-12-20 01:03:02,601 INFO L226 Difference]: Without dead ends: 46678 [2023-12-20 01:03:02,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 01:03:02,612 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 546 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:02,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 732 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:03:02,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46678 states. [2023-12-20 01:03:04,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46678 to 37899. [2023-12-20 01:03:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37899 states, 37898 states have (on average 1.2112512533642936) internal successors, (45904), 37898 states have internal predecessors, (45904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 45904 transitions. [2023-12-20 01:03:04,444 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 45904 transitions. Word has length 104 [2023-12-20 01:03:04,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:04,444 INFO L495 AbstractCegarLoop]: Abstraction has 37899 states and 45904 transitions. [2023-12-20 01:03:04,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.62962962962963) internal successors, (233), 26 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 45904 transitions. [2023-12-20 01:03:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 01:03:04,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:04,461 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:04,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 01:03:04,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-20 01:03:04,668 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:04,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1864129594, now seen corresponding path program 1 times [2023-12-20 01:03:04,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:04,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614267237] [2023-12-20 01:03:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 33 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:05,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614267237] [2023-12-20 01:03:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614267237] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536251974] [2023-12-20 01:03:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:05,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:05,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:05,407 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:03:05,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 01:03:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:05,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:03:05,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:06,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 33 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536251974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:07,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:07,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2023-12-20 01:03:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616296281] [2023-12-20 01:03:07,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:07,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:03:07,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:07,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:03:07,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:03:07,716 INFO L87 Difference]: Start difference. First operand 37899 states and 45904 transitions. Second operand has 32 states, 32 states have (on average 7.6875) internal successors, (246), 31 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:12,412 INFO L93 Difference]: Finished difference Result 70965 states and 85657 transitions. [2023-12-20 01:03:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-20 01:03:12,412 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 31 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 01:03:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:12,466 INFO L225 Difference]: With dead ends: 70965 [2023-12-20 01:03:12,466 INFO L226 Difference]: Without dead ends: 50647 [2023-12-20 01:03:12,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1400, Invalid=4920, Unknown=0, NotChecked=0, Total=6320 [2023-12-20 01:03:12,480 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1120 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:12,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1404 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 01:03:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50647 states. [2023-12-20 01:03:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50647 to 38255. [2023-12-20 01:03:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38255 states, 38254 states have (on average 1.1995085481256862) internal successors, (45886), 38254 states have internal predecessors, (45886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38255 states to 38255 states and 45886 transitions. [2023-12-20 01:03:14,637 INFO L78 Accepts]: Start accepts. Automaton has 38255 states and 45886 transitions. Word has length 104 [2023-12-20 01:03:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:14,637 INFO L495 AbstractCegarLoop]: Abstraction has 38255 states and 45886 transitions. [2023-12-20 01:03:14,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 31 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 38255 states and 45886 transitions. [2023-12-20 01:03:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 01:03:14,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:14,648 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:14,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 01:03:14,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:14,857 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:14,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1579463930, now seen corresponding path program 1 times [2023-12-20 01:03:14,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:14,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870096889] [2023-12-20 01:03:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 01:03:15,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:15,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870096889] [2023-12-20 01:03:15,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870096889] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:15,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686700633] [2023-12-20 01:03:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:15,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:15,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:03:15,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 01:03:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:15,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-20 01:03:15,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 01:03:17,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:21,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686700633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:21,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:21,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 26] total 50 [2023-12-20 01:03:21,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941727593] [2023-12-20 01:03:21,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:21,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-20 01:03:21,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:21,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-20 01:03:21,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2152, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 01:03:21,917 INFO L87 Difference]: Start difference. First operand 38255 states and 45886 transitions. Second operand has 50 states, 50 states have (on average 4.88) internal successors, (244), 50 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:35,778 INFO L93 Difference]: Finished difference Result 91642 states and 109084 transitions. [2023-12-20 01:04:35,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 391 states. [2023-12-20 01:04:35,779 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.88) internal successors, (244), 50 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 01:04:35,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:35,851 INFO L225 Difference]: With dead ends: 91642 [2023-12-20 01:04:35,851 INFO L226 Difference]: Without dead ends: 72759 [2023-12-20 01:04:35,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 436 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81816 ImplicationChecksByTransitivity, 66.6s TimeCoverageRelationStatistics Valid=17917, Invalid=173489, Unknown=0, NotChecked=0, Total=191406 [2023-12-20 01:04:35,878 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 4520 mSDsluCounter, 5690 mSDsCounter, 0 mSdLazyCounter, 5675 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4520 SdHoareTripleChecker+Valid, 5924 SdHoareTripleChecker+Invalid, 5973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 5675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:35,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4520 Valid, 5924 Invalid, 5973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 5675 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 01:04:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72759 states. [2023-12-20 01:04:38,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72759 to 42280. [2023-12-20 01:04:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42280 states, 42279 states have (on average 1.1975921852456302) internal successors, (50633), 42279 states have internal predecessors, (50633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42280 states to 42280 states and 50633 transitions. [2023-12-20 01:04:38,784 INFO L78 Accepts]: Start accepts. Automaton has 42280 states and 50633 transitions. Word has length 104 [2023-12-20 01:04:38,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:38,784 INFO L495 AbstractCegarLoop]: Abstraction has 42280 states and 50633 transitions. [2023-12-20 01:04:38,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.88) internal successors, (244), 50 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 42280 states and 50633 transitions. [2023-12-20 01:04:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 01:04:38,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:38,797 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:38,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 01:04:39,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:39,008 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:39,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:39,009 INFO L85 PathProgramCache]: Analyzing trace with hash -35488742, now seen corresponding path program 1 times [2023-12-20 01:04:39,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:39,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023893210] [2023-12-20 01:04:39,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:39,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-20 01:04:39,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:39,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023893210] [2023-12-20 01:04:39,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023893210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:39,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:39,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:39,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316822482] [2023-12-20 01:04:39,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:39,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:39,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:39,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:39,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:39,060 INFO L87 Difference]: Start difference. First operand 42280 states and 50633 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:41,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:41,599 INFO L93 Difference]: Finished difference Result 60759 states and 72585 transitions. [2023-12-20 01:04:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:41,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 01:04:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:41,631 INFO L225 Difference]: With dead ends: 60759 [2023-12-20 01:04:41,631 INFO L226 Difference]: Without dead ends: 32552 [2023-12-20 01:04:41,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:41,644 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 24 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 202 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 [2023-12-20 01:04:41,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 202 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32552 states. [2023-12-20 01:04:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32552 to 27868. [2023-12-20 01:04:43,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27868 states, 27867 states have (on average 1.1830480496644777) internal successors, (32968), 27867 states have internal predecessors, (32968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27868 states to 27868 states and 32968 transitions. [2023-12-20 01:04:43,537 INFO L78 Accepts]: Start accepts. Automaton has 27868 states and 32968 transitions. Word has length 104 [2023-12-20 01:04:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:43,537 INFO L495 AbstractCegarLoop]: Abstraction has 27868 states and 32968 transitions. [2023-12-20 01:04:43,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 27868 states and 32968 transitions. [2023-12-20 01:04:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 01:04:43,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:43,544 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:43,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 01:04:43,544 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:43,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:43,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1203829924, now seen corresponding path program 1 times [2023-12-20 01:04:43,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:43,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310684053] [2023-12-20 01:04:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:43,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 01:04:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310684053] [2023-12-20 01:04:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310684053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:43,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:43,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:43,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195314056] [2023-12-20 01:04:43,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:43,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:43,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:43,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:43,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:43,589 INFO L87 Difference]: Start difference. First operand 27868 states and 32968 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:44,746 INFO L93 Difference]: Finished difference Result 34991 states and 41222 transitions. [2023-12-20 01:04:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:44,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 01:04:44,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:44,763 INFO L225 Difference]: With dead ends: 34991 [2023-12-20 01:04:44,763 INFO L226 Difference]: Without dead ends: 16047 [2023-12-20 01:04:44,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:44,770 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 26 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 194 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 [2023-12-20 01:04:44,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 194 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16047 states. [2023-12-20 01:04:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16047 to 13225. [2023-12-20 01:04:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13225 states, 13224 states have (on average 1.156911675741077) internal successors, (15299), 13224 states have internal predecessors, (15299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13225 states to 13225 states and 15299 transitions. [2023-12-20 01:04:45,728 INFO L78 Accepts]: Start accepts. Automaton has 13225 states and 15299 transitions. Word has length 104 [2023-12-20 01:04:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:45,728 INFO L495 AbstractCegarLoop]: Abstraction has 13225 states and 15299 transitions. [2023-12-20 01:04:45,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 13225 states and 15299 transitions. [2023-12-20 01:04:45,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 01:04:45,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:45,732 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:45,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 01:04:45,733 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:45,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:45,733 INFO L85 PathProgramCache]: Analyzing trace with hash 862810924, now seen corresponding path program 1 times [2023-12-20 01:04:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:45,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340691104] [2023-12-20 01:04:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:45,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 01:04:45,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:45,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340691104] [2023-12-20 01:04:45,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340691104] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:45,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290764222] [2023-12-20 01:04:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:45,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:45,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:45,825 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:04:45,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 01:04:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:45,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 01:04:45,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 01:04:46,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 01:04:46,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290764222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:46,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:46,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-12-20 01:04:46,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256339074] [2023-12-20 01:04:46,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:46,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 01:04:46,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:46,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 01:04:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-20 01:04:46,186 INFO L87 Difference]: Start difference. First operand 13225 states and 15299 transitions. Second operand has 16 states, 16 states have (on average 10.6875) internal successors, (171), 15 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:47,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:47,283 INFO L93 Difference]: Finished difference Result 15643 states and 18142 transitions. [2023-12-20 01:04:47,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 01:04:47,283 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.6875) internal successors, (171), 15 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 01:04:47,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:47,296 INFO L225 Difference]: With dead ends: 15643 [2023-12-20 01:04:47,296 INFO L226 Difference]: Without dead ends: 13247 [2023-12-20 01:04:47,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2023-12-20 01:04:47,300 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 330 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:47,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 172 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13247 states. [2023-12-20 01:04:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13247 to 13048. [2023-12-20 01:04:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13048 states, 13047 states have (on average 1.1565110753429908) internal successors, (15089), 13047 states have internal predecessors, (15089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13048 states to 13048 states and 15089 transitions. [2023-12-20 01:04:48,321 INFO L78 Accepts]: Start accepts. Automaton has 13048 states and 15089 transitions. Word has length 106 [2023-12-20 01:04:48,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:48,322 INFO L495 AbstractCegarLoop]: Abstraction has 13048 states and 15089 transitions. [2023-12-20 01:04:48,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.6875) internal successors, (171), 15 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 13048 states and 15089 transitions. [2023-12-20 01:04:48,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 01:04:48,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:48,325 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:48,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 01:04:48,526 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,SelfDestructingSolverStorable26 [2023-12-20 01:04:48,526 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:48,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:48,527 INFO L85 PathProgramCache]: Analyzing trace with hash -234398854, now seen corresponding path program 1 times [2023-12-20 01:04:48,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:48,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691594535] [2023-12-20 01:04:48,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:48,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 01:04:48,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:48,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691594535] [2023-12-20 01:04:48,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691594535] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:48,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004525509] [2023-12-20 01:04:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:48,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:48,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:48,626 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:04:48,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 01:04:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:48,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 01:04:48,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 01:04:48,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 01:04:48,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004525509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:48,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:48,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-12-20 01:04:48,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032511265] [2023-12-20 01:04:48,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:48,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 01:04:48,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:48,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 01:04:48,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-20 01:04:48,992 INFO L87 Difference]: Start difference. First operand 13048 states and 15089 transitions. Second operand has 16 states, 16 states have (on average 12.1875) internal successors, (195), 15 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:50,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:50,078 INFO L93 Difference]: Finished difference Result 14860 states and 17162 transitions. [2023-12-20 01:04:50,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 01:04:50,079 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.1875) internal successors, (195), 15 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 01:04:50,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:50,091 INFO L225 Difference]: With dead ends: 14860 [2023-12-20 01:04:50,091 INFO L226 Difference]: Without dead ends: 13731 [2023-12-20 01:04:50,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-20 01:04:50,094 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 383 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:50,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 357 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13731 states. [2023-12-20 01:04:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13731 to 12968. [2023-12-20 01:04:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12968 states, 12967 states have (on average 1.1557800570679417) internal successors, (14987), 12967 states have internal predecessors, (14987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12968 states to 12968 states and 14987 transitions. [2023-12-20 01:04:51,095 INFO L78 Accepts]: Start accepts. Automaton has 12968 states and 14987 transitions. Word has length 106 [2023-12-20 01:04:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:51,096 INFO L495 AbstractCegarLoop]: Abstraction has 12968 states and 14987 transitions. [2023-12-20 01:04:51,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.1875) internal successors, (195), 15 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:51,096 INFO L276 IsEmpty]: Start isEmpty. Operand 12968 states and 14987 transitions. [2023-12-20 01:04:51,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 01:04:51,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:51,099 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:51,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 01:04:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 01:04:51,301 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:51,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash -404523408, now seen corresponding path program 1 times [2023-12-20 01:04:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:51,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745769102] [2023-12-20 01:04:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:51,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 51 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 01:04:51,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745769102] [2023-12-20 01:04:51,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745769102] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920798086] [2023-12-20 01:04:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:51,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:51,394 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) [2023-12-20 01:04:51,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 01:04:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:51,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 01:04:51,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 51 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 01:04:51,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 51 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 01:04:51,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920798086] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:51,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:51,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-12-20 01:04:51,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668376669] [2023-12-20 01:04:51,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:51,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 01:04:51,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 01:04:51,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-20 01:04:51,712 INFO L87 Difference]: Start difference. First operand 12968 states and 14987 transitions. Second operand has 16 states, 16 states have (on average 11.375) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:52,667 INFO L93 Difference]: Finished difference Result 15289 states and 17651 transitions. [2023-12-20 01:04:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 01:04:52,667 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 01:04:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:52,680 INFO L225 Difference]: With dead ends: 15289 [2023-12-20 01:04:52,680 INFO L226 Difference]: Without dead ends: 12893 [2023-12-20 01:04:52,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-20 01:04:52,685 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 365 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:52,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 198 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12893 states. [2023-12-20 01:04:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12893 to 11892. [2023-12-20 01:04:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11892 states, 11891 states have (on average 1.1522159616516694) internal successors, (13701), 11891 states have internal predecessors, (13701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11892 states to 11892 states and 13701 transitions. [2023-12-20 01:04:53,612 INFO L78 Accepts]: Start accepts. Automaton has 11892 states and 13701 transitions. Word has length 106 [2023-12-20 01:04:53,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:53,612 INFO L495 AbstractCegarLoop]: Abstraction has 11892 states and 13701 transitions. [2023-12-20 01:04:53,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:53,612 INFO L276 IsEmpty]: Start isEmpty. Operand 11892 states and 13701 transitions. [2023-12-20 01:04:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:04:53,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:53,615 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-12-20 01:04:53,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 01:04:53,815 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,SelfDestructingSolverStorable28 [2023-12-20 01:04:53,816 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:53,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1624824434, now seen corresponding path program 1 times [2023-12-20 01:04:53,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:53,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629442256] [2023-12-20 01:04:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:53,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:54,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:54,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629442256] [2023-12-20 01:04:54,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629442256] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:54,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455080778] [2023-12-20 01:04:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:54,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:54,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:54,936 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) [2023-12-20 01:04:54,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 01:04:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:55,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 01:04:55,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:56,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:59,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455080778] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:59,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:59,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 54 [2023-12-20 01:04:59,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315141973] [2023-12-20 01:04:59,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:59,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-20 01:04:59,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:59,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-20 01:04:59,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2648, Unknown=0, NotChecked=0, Total=2862 [2023-12-20 01:04:59,726 INFO L87 Difference]: Start difference. First operand 11892 states and 13701 transitions. Second operand has 54 states, 54 states have (on average 5.37037037037037) internal successors, (290), 54 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:54,681 INFO L93 Difference]: Finished difference Result 28791 states and 32980 transitions. [2023-12-20 01:06:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 493 states. [2023-12-20 01:06:54,682 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.37037037037037) internal successors, (290), 54 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-20 01:06:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:54,698 INFO L225 Difference]: With dead ends: 28791 [2023-12-20 01:06:54,699 INFO L226 Difference]: Without dead ends: 22560 [2023-12-20 01:06:54,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 543 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126339 ImplicationChecksByTransitivity, 107.4s TimeCoverageRelationStatistics Valid=28778, Invalid=267702, Unknown=0, NotChecked=0, Total=296480 [2023-12-20 01:06:54,712 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 7219 mSDsluCounter, 7841 mSDsCounter, 0 mSdLazyCounter, 6801 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7219 SdHoareTripleChecker+Valid, 8127 SdHoareTripleChecker+Invalid, 7182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 6801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:54,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7219 Valid, 8127 Invalid, 7182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 6801 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-20 01:06:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22560 states. [2023-12-20 01:06:56,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22560 to 15459. [2023-12-20 01:06:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15459 states, 15458 states have (on average 1.1467201449087852) internal successors, (17726), 15458 states have internal predecessors, (17726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:56,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15459 states to 15459 states and 17726 transitions. [2023-12-20 01:06:56,231 INFO L78 Accepts]: Start accepts. Automaton has 15459 states and 17726 transitions. Word has length 107 [2023-12-20 01:06:56,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:56,231 INFO L495 AbstractCegarLoop]: Abstraction has 15459 states and 17726 transitions. [2023-12-20 01:06:56,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.37037037037037) internal successors, (290), 54 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:56,231 INFO L276 IsEmpty]: Start isEmpty. Operand 15459 states and 17726 transitions. [2023-12-20 01:06:56,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:06:56,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:56,234 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-12-20 01:06:56,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 01:06:56,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:56,434 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:56,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1685565326, now seen corresponding path program 1 times [2023-12-20 01:06:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:56,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525471994] [2023-12-20 01:06:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:56,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:57,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:57,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525471994] [2023-12-20 01:06:57,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525471994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:06:57,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048263131] [2023-12-20 01:06:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:57,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:57,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:57,781 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) [2023-12-20 01:06:57,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 01:06:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:57,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 01:06:57,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:07:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:00,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:07:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:04,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048263131] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:07:04,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:07:04,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 21] total 64 [2023-12-20 01:07:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767106614] [2023-12-20 01:07:04,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:07:04,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-20 01:07:04,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:04,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-20 01:07:04,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=3716, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 01:07:04,610 INFO L87 Difference]: Start difference. First operand 15459 states and 17726 transitions. Second operand has 64 states, 64 states have (on average 4.40625) internal successors, (282), 64 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:43,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:43,685 INFO L93 Difference]: Finished difference Result 33534 states and 38189 transitions. [2023-12-20 01:08:43,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 474 states. [2023-12-20 01:08:43,685 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.40625) internal successors, (282), 64 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-20 01:08:43,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:43,711 INFO L225 Difference]: With dead ends: 33534 [2023-12-20 01:08:43,711 INFO L226 Difference]: Without dead ends: 30597 [2023-12-20 01:08:43,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 534 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123122 ImplicationChecksByTransitivity, 91.0s TimeCoverageRelationStatistics Valid=32821, Invalid=253939, Unknown=0, NotChecked=0, Total=286760 [2023-12-20 01:08:43,724 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 9562 mSDsluCounter, 7539 mSDsCounter, 0 mSdLazyCounter, 7683 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9562 SdHoareTripleChecker+Valid, 7747 SdHoareTripleChecker+Invalid, 8091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 7683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:43,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9562 Valid, 7747 Invalid, 8091 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [408 Valid, 7683 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-20 01:08:43,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30597 states. [2023-12-20 01:08:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30597 to 18460. [2023-12-20 01:08:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18460 states, 18459 states have (on average 1.14692020152771) internal successors, (21171), 18459 states have internal predecessors, (21171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:45,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18460 states to 18460 states and 21171 transitions. [2023-12-20 01:08:45,710 INFO L78 Accepts]: Start accepts. Automaton has 18460 states and 21171 transitions. Word has length 107 [2023-12-20 01:08:45,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:45,711 INFO L495 AbstractCegarLoop]: Abstraction has 18460 states and 21171 transitions. [2023-12-20 01:08:45,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.40625) internal successors, (282), 64 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:45,711 INFO L276 IsEmpty]: Start isEmpty. Operand 18460 states and 21171 transitions. [2023-12-20 01:08:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 01:08:45,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:45,718 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:08:45,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 01:08:45,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:45,918 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:45,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:45,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1719914879, now seen corresponding path program 1 times [2023-12-20 01:08:45,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:45,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329798383] [2023-12-20 01:08:45,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:45,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 129 proven. 68 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 01:08:46,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:46,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329798383] [2023-12-20 01:08:46,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329798383] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:46,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475782062] [2023-12-20 01:08:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:46,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:46,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:46,540 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) [2023-12-20 01:08:46,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 01:08:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:46,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 01:08:46,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 129 proven. 68 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 01:08:47,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 136 proven. 61 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 01:08:48,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475782062] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:48,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:48,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 29 [2023-12-20 01:08:48,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928361535] [2023-12-20 01:08:48,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:48,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 01:08:48,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:48,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 01:08:48,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2023-12-20 01:08:48,079 INFO L87 Difference]: Start difference. First operand 18460 states and 21171 transitions. Second operand has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 29 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:55,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:55,433 INFO L93 Difference]: Finished difference Result 35758 states and 41245 transitions. [2023-12-20 01:08:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-20 01:08:55,433 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 29 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-20 01:08:55,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:55,455 INFO L225 Difference]: With dead ends: 35758 [2023-12-20 01:08:55,455 INFO L226 Difference]: Without dead ends: 24567 [2023-12-20 01:08:55,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4234 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2142, Invalid=11430, Unknown=0, NotChecked=0, Total=13572 [2023-12-20 01:08:55,461 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1369 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 2118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:55,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 1710 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 01:08:55,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24567 states. [2023-12-20 01:08:57,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24567 to 14713. [2023-12-20 01:08:57,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14713 states, 14712 states have (on average 1.137710712343665) internal successors, (16738), 14712 states have internal predecessors, (16738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14713 states to 14713 states and 16738 transitions. [2023-12-20 01:08:57,140 INFO L78 Accepts]: Start accepts. Automaton has 14713 states and 16738 transitions. Word has length 139 [2023-12-20 01:08:57,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:57,141 INFO L495 AbstractCegarLoop]: Abstraction has 14713 states and 16738 transitions. [2023-12-20 01:08:57,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 29 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:57,141 INFO L276 IsEmpty]: Start isEmpty. Operand 14713 states and 16738 transitions. [2023-12-20 01:08:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 01:08:57,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:57,146 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:08:57,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 01:08:57,347 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,SelfDestructingSolverStorable31 [2023-12-20 01:08:57,347 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:57,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:57,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1715400639, now seen corresponding path program 1 times [2023-12-20 01:08:57,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:57,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937496104] [2023-12-20 01:08:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:57,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 141 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:08:58,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:58,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937496104] [2023-12-20 01:08:58,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937496104] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:58,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813877609] [2023-12-20 01:08:58,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:58,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:58,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:58,447 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) [2023-12-20 01:08:58,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 01:08:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:58,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 01:08:58,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 128 proven. 24 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 01:08:59,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:09:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 128 proven. 24 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 01:09:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813877609] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:09:00,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:09:00,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 33 [2023-12-20 01:09:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514218544] [2023-12-20 01:09:00,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:09:00,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 01:09:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 01:09:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 01:09:00,210 INFO L87 Difference]: Start difference. First operand 14713 states and 16738 transitions. Second operand has 34 states, 34 states have (on average 6.9411764705882355) internal successors, (236), 33 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:05,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:09:05,493 INFO L93 Difference]: Finished difference Result 27799 states and 31583 transitions. [2023-12-20 01:09:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-20 01:09:05,494 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.9411764705882355) internal successors, (236), 33 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-20 01:09:05,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:09:05,511 INFO L225 Difference]: With dead ends: 27799 [2023-12-20 01:09:05,511 INFO L226 Difference]: Without dead ends: 24080 [2023-12-20 01:09:05,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1494, Invalid=4826, Unknown=0, NotChecked=0, Total=6320 [2023-12-20 01:09:05,516 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 2600 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:09:05,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 1958 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 01:09:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24080 states. [2023-12-20 01:09:07,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24080 to 15878. [2023-12-20 01:09:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15878 states, 15877 states have (on average 1.1357939157271524) internal successors, (18033), 15877 states have internal predecessors, (18033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15878 states to 15878 states and 18033 transitions. [2023-12-20 01:09:07,422 INFO L78 Accepts]: Start accepts. Automaton has 15878 states and 18033 transitions. Word has length 139 [2023-12-20 01:09:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:09:07,422 INFO L495 AbstractCegarLoop]: Abstraction has 15878 states and 18033 transitions. [2023-12-20 01:09:07,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.9411764705882355) internal successors, (236), 33 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 15878 states and 18033 transitions. [2023-12-20 01:09:07,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 01:09:07,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:09:07,430 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:09:07,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 01:09:07,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:07,642 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:09:07,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:09:07,642 INFO L85 PathProgramCache]: Analyzing trace with hash -278622497, now seen corresponding path program 1 times [2023-12-20 01:09:07,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:09:07,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515058729] [2023-12-20 01:09:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:07,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:09:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 116 proven. 99 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 01:09:08,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:09:08,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515058729] [2023-12-20 01:09:08,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515058729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:09:08,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407990927] [2023-12-20 01:09:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:08,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:08,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:09:08,532 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) [2023-12-20 01:09:08,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 01:09:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:08,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 01:09:08,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:09:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 107 proven. 101 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 01:09:10,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:09:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 90 proven. 118 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 01:09:11,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407990927] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:09:11,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:09:11,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 12] total 34 [2023-12-20 01:09:11,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510722545] [2023-12-20 01:09:11,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:09:11,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 01:09:11,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:11,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 01:09:11,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 01:09:11,075 INFO L87 Difference]: Start difference. First operand 15878 states and 18033 transitions. Second operand has 35 states, 35 states have (on average 8.8) internal successors, (308), 34 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:09:20,977 INFO L93 Difference]: Finished difference Result 45662 states and 52156 transitions. [2023-12-20 01:09:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-20 01:09:20,977 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.8) internal successors, (308), 34 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-20 01:09:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:09:21,009 INFO L225 Difference]: With dead ends: 45662 [2023-12-20 01:09:21,009 INFO L226 Difference]: Without dead ends: 40972 [2023-12-20 01:09:21,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4737 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2575, Invalid=11945, Unknown=0, NotChecked=0, Total=14520 [2023-12-20 01:09:21,015 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 4477 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4477 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:09:21,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4477 Valid, 3129 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 01:09:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40972 states. [2023-12-20 01:09:23,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40972 to 16944. [2023-12-20 01:09:23,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16944 states, 16943 states have (on average 1.132207991500915) internal successors, (19183), 16943 states have internal predecessors, (19183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16944 states to 16944 states and 19183 transitions. [2023-12-20 01:09:23,203 INFO L78 Accepts]: Start accepts. Automaton has 16944 states and 19183 transitions. Word has length 139 [2023-12-20 01:09:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:09:23,203 INFO L495 AbstractCegarLoop]: Abstraction has 16944 states and 19183 transitions. [2023-12-20 01:09:23,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.8) internal successors, (308), 34 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 16944 states and 19183 transitions. [2023-12-20 01:09:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 01:09:23,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:09:23,210 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:09:23,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-20 01:09:23,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:23,422 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:09:23,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:09:23,422 INFO L85 PathProgramCache]: Analyzing trace with hash -90077565, now seen corresponding path program 1 times [2023-12-20 01:09:23,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:09:23,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129308840] [2023-12-20 01:09:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:23,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:09:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 131 proven. 60 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 01:09:23,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:09:23,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129308840] [2023-12-20 01:09:23,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129308840] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:09:23,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125266931] [2023-12-20 01:09:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:23,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:23,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:09:23,960 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:09:23,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 01:09:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:24,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-20 01:09:24,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:09:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 65 proven. 148 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:09:24,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:09:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 152 proven. 37 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 01:09:25,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125266931] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:09:25,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:09:25,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 29 [2023-12-20 01:09:25,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596684982] [2023-12-20 01:09:25,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:09:25,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 01:09:25,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:25,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 01:09:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2023-12-20 01:09:25,399 INFO L87 Difference]: Start difference. First operand 16944 states and 19183 transitions. Second operand has 29 states, 29 states have (on average 10.448275862068966) internal successors, (303), 29 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:31,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:09:31,556 INFO L93 Difference]: Finished difference Result 23803 states and 26904 transitions. [2023-12-20 01:09:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-20 01:09:31,557 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.448275862068966) internal successors, (303), 29 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-20 01:09:31,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:09:31,570 INFO L225 Difference]: With dead ends: 23803 [2023-12-20 01:09:31,570 INFO L226 Difference]: Without dead ends: 20542 [2023-12-20 01:09:31,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3057 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1674, Invalid=8426, Unknown=0, NotChecked=0, Total=10100 [2023-12-20 01:09:31,573 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 1540 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:09:31,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 1508 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 01:09:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20542 states. [2023-12-20 01:09:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20542 to 17428. [2023-12-20 01:09:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17428 states, 17427 states have (on average 1.1287657083835427) internal successors, (19671), 17427 states have internal predecessors, (19671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17428 states to 17428 states and 19671 transitions. [2023-12-20 01:09:33,762 INFO L78 Accepts]: Start accepts. Automaton has 17428 states and 19671 transitions. Word has length 139 [2023-12-20 01:09:33,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:09:33,763 INFO L495 AbstractCegarLoop]: Abstraction has 17428 states and 19671 transitions. [2023-12-20 01:09:33,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.448275862068966) internal successors, (303), 29 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 17428 states and 19671 transitions. [2023-12-20 01:09:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 01:09:33,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:09:33,769 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:09:33,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 01:09:33,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 01:09:33,969 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:09:33,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:09:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1507882941, now seen corresponding path program 1 times [2023-12-20 01:09:33,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:09:33,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670988195] [2023-12-20 01:09:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:33,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:09:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 142 proven. 69 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 01:09:35,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:09:35,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670988195] [2023-12-20 01:09:35,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670988195] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:09:35,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929695837] [2023-12-20 01:09:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:35,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:35,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:09:35,016 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:09:35,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 01:09:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:35,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 01:09:35,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:09:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 136 proven. 68 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 01:09:36,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:09:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 112 proven. 92 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 01:09:38,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929695837] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:09:38,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:09:38,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 34 [2023-12-20 01:09:38,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565820177] [2023-12-20 01:09:38,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:09:38,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 01:09:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:38,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 01:09:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 01:09:38,056 INFO L87 Difference]: Start difference. First operand 17428 states and 19671 transitions. Second operand has 35 states, 35 states have (on average 8.685714285714285) internal successors, (304), 34 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:09:44,222 INFO L93 Difference]: Finished difference Result 30465 states and 34292 transitions. [2023-12-20 01:09:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-20 01:09:44,223 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.685714285714285) internal successors, (304), 34 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-20 01:09:44,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:09:44,244 INFO L225 Difference]: With dead ends: 30465 [2023-12-20 01:09:44,244 INFO L226 Difference]: Without dead ends: 26045 [2023-12-20 01:09:44,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1785 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1375, Invalid=5267, Unknown=0, NotChecked=0, Total=6642 [2023-12-20 01:09:44,251 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 1841 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:09:44,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 2446 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 01:09:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26045 states. [2023-12-20 01:09:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26045 to 17192. [2023-12-20 01:09:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17192 states, 17191 states have (on average 1.128439299633529) internal successors, (19399), 17191 states have internal predecessors, (19399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17192 states to 17192 states and 19399 transitions. [2023-12-20 01:09:46,609 INFO L78 Accepts]: Start accepts. Automaton has 17192 states and 19399 transitions. Word has length 139 [2023-12-20 01:09:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:09:46,609 INFO L495 AbstractCegarLoop]: Abstraction has 17192 states and 19399 transitions. [2023-12-20 01:09:46,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.685714285714285) internal successors, (304), 34 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 17192 states and 19399 transitions. [2023-12-20 01:09:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 01:09:46,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:09:46,614 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:09:46,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-20 01:09:46,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:46,815 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:09:46,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:09:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1112907279, now seen corresponding path program 1 times [2023-12-20 01:09:46,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:09:46,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130902935] [2023-12-20 01:09:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:46,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:09:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-20 01:09:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:09:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130902935] [2023-12-20 01:09:46,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130902935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:09:46,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:09:46,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:09:46,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184134289] [2023-12-20 01:09:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:09:46,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:09:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:46,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:09:46,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:09:46,876 INFO L87 Difference]: Start difference. First operand 17192 states and 19399 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:09:48,880 INFO L93 Difference]: Finished difference Result 17198 states and 19402 transitions. [2023-12-20 01:09:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:09:48,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-20 01:09:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:09:48,892 INFO L225 Difference]: With dead ends: 17198 [2023-12-20 01:09:48,892 INFO L226 Difference]: Without dead ends: 15271 [2023-12-20 01:09:48,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:09:48,895 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 179 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:09:48,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 250 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:09:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15271 states. [2023-12-20 01:09:50,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15271 to 15267. [2023-12-20 01:09:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15267 states, 15266 states have (on average 1.1321891785667497) internal successors, (17284), 15266 states have internal predecessors, (17284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15267 states to 15267 states and 17284 transitions. [2023-12-20 01:09:50,899 INFO L78 Accepts]: Start accepts. Automaton has 15267 states and 17284 transitions. Word has length 139 [2023-12-20 01:09:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:09:50,900 INFO L495 AbstractCegarLoop]: Abstraction has 15267 states and 17284 transitions. [2023-12-20 01:09:50,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:09:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 15267 states and 17284 transitions. [2023-12-20 01:09:50,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 01:09:50,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:09:50,934 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-12-20 01:09:50,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-20 01:09:50,934 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:09:50,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:09:50,935 INFO L85 PathProgramCache]: Analyzing trace with hash 505331071, now seen corresponding path program 1 times [2023-12-20 01:09:50,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:09:50,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254623263] [2023-12-20 01:09:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:50,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:09:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 91 proven. 125 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 01:09:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:09:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254623263] [2023-12-20 01:09:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254623263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:09:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107788735] [2023-12-20 01:09:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:09:51,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:09:51,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:09:51,804 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:09:51,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 01:09:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:09:51,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-20 01:09:51,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:09:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 91 proven. 125 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 01:09:53,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:09:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 91 proven. 125 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 01:09:55,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107788735] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:09:55,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:09:55,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 46 [2023-12-20 01:09:55,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769456776] [2023-12-20 01:09:55,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:09:55,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-20 01:09:55,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:09:55,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-20 01:09:55,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1967, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 01:09:55,883 INFO L87 Difference]: Start difference. First operand 15267 states and 17284 transitions. Second operand has 47 states, 47 states have (on average 6.51063829787234) internal successors, (306), 46 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:10:48,391 INFO L93 Difference]: Finished difference Result 41523 states and 47280 transitions. [2023-12-20 01:10:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2023-12-20 01:10:48,392 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.51063829787234) internal successors, (306), 46 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-12-20 01:10:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:10:48,420 INFO L225 Difference]: With dead ends: 41523 [2023-12-20 01:10:48,421 INFO L226 Difference]: Without dead ends: 36592 [2023-12-20 01:10:48,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50364 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=15191, Invalid=104179, Unknown=0, NotChecked=0, Total=119370 [2023-12-20 01:10:48,428 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 4185 mSDsluCounter, 5562 mSDsCounter, 0 mSdLazyCounter, 6803 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 5780 SdHoareTripleChecker+Invalid, 6978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 6803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:10:48,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4185 Valid, 5780 Invalid, 6978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 6803 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-20 01:10:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36592 states. [2023-12-20 01:10:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36592 to 15168. [2023-12-20 01:10:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15168 states, 15167 states have (on average 1.1297553899914288) internal successors, (17135), 15167 states have internal predecessors, (17135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15168 states to 15168 states and 17135 transitions. [2023-12-20 01:10:50,696 INFO L78 Accepts]: Start accepts. Automaton has 15168 states and 17135 transitions. Word has length 141 [2023-12-20 01:10:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:10:50,696 INFO L495 AbstractCegarLoop]: Abstraction has 15168 states and 17135 transitions. [2023-12-20 01:10:50,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.51063829787234) internal successors, (306), 46 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 15168 states and 17135 transitions. [2023-12-20 01:10:50,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 01:10:50,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:10:50,701 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-12-20 01:10:50,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 01:10:50,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-20 01:10:50,903 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:10:50,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:10:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash -580238191, now seen corresponding path program 1 times [2023-12-20 01:10:50,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:10:50,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746672883] [2023-12-20 01:10:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:50,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:10:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 113 proven. 99 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 01:10:52,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:10:52,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746672883] [2023-12-20 01:10:52,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746672883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:10:52,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372254860] [2023-12-20 01:10:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:52,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:10:52,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:10:52,048 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:10:52,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 01:10:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:52,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 01:10:52,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:10:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 113 proven. 99 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 01:10:54,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:10:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 113 proven. 99 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 01:10:56,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372254860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:10:56,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:10:56,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 45 [2023-12-20 01:10:56,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096100752] [2023-12-20 01:10:56,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:10:56,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 01:10:56,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:10:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 01:10:56,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1892, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 01:10:56,915 INFO L87 Difference]: Start difference. First operand 15168 states and 17135 transitions. Second operand has 46 states, 46 states have (on average 6.413043478260869) internal successors, (295), 45 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:11:19,404 INFO L93 Difference]: Finished difference Result 28540 states and 32460 transitions. [2023-12-20 01:11:19,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2023-12-20 01:11:19,404 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.413043478260869) internal successors, (295), 45 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-12-20 01:11:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:11:19,419 INFO L225 Difference]: With dead ends: 28540 [2023-12-20 01:11:19,419 INFO L226 Difference]: Without dead ends: 23070 [2023-12-20 01:11:19,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17621 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=7381, Invalid=42125, Unknown=0, NotChecked=0, Total=49506 [2023-12-20 01:11:19,423 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 2846 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 3588 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 3488 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:11:19,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2846 Valid, 3488 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3588 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 01:11:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23070 states. [2023-12-20 01:11:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23070 to 14890. [2023-12-20 01:11:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14890 states, 14889 states have (on average 1.1286856068238296) internal successors, (16805), 14889 states have internal predecessors, (16805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14890 states to 14890 states and 16805 transitions. [2023-12-20 01:11:21,731 INFO L78 Accepts]: Start accepts. Automaton has 14890 states and 16805 transitions. Word has length 141 [2023-12-20 01:11:21,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:11:21,731 INFO L495 AbstractCegarLoop]: Abstraction has 14890 states and 16805 transitions. [2023-12-20 01:11:21,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.413043478260869) internal successors, (295), 45 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:21,732 INFO L276 IsEmpty]: Start isEmpty. Operand 14890 states and 16805 transitions. [2023-12-20 01:11:21,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 01:11:21,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:11:21,735 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-12-20 01:11:21,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-20 01:11:21,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:11:21,936 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:11:21,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:11:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash -625411135, now seen corresponding path program 1 times [2023-12-20 01:11:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:11:21,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464883356] [2023-12-20 01:11:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:11:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:11:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:11:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 101 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:11:22,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:11:22,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464883356] [2023-12-20 01:11:22,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464883356] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:11:22,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354525028] [2023-12-20 01:11:22,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:11:22,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:11:22,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:11:22,921 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:11:22,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 01:11:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:11:23,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 01:11:23,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:11:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 101 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:11:25,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:11:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 101 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:11:29,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354525028] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:11:29,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:11:29,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 45 [2023-12-20 01:11:29,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373771197] [2023-12-20 01:11:29,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:11:29,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 01:11:29,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:11:29,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 01:11:29,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 01:11:29,089 INFO L87 Difference]: Start difference. First operand 14890 states and 16805 transitions. Second operand has 46 states, 46 states have (on average 6.543478260869565) internal successors, (301), 45 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:15,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:12:15,312 INFO L93 Difference]: Finished difference Result 39861 states and 45069 transitions. [2023-12-20 01:12:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2023-12-20 01:12:15,313 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.543478260869565) internal successors, (301), 45 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-12-20 01:12:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:12:15,341 INFO L225 Difference]: With dead ends: 39861 [2023-12-20 01:12:15,341 INFO L226 Difference]: Without dead ends: 34282 [2023-12-20 01:12:15,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49731 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=14743, Invalid=98489, Unknown=0, NotChecked=0, Total=113232 [2023-12-20 01:12:15,350 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 5549 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 4304 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5549 SdHoareTripleChecker+Valid, 4400 SdHoareTripleChecker+Invalid, 4525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 4304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:12:15,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5549 Valid, 4400 Invalid, 4525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 4304 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 01:12:15,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34282 states. [2023-12-20 01:12:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34282 to 15383. [2023-12-20 01:12:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15383 states, 15382 states have (on average 1.1260564295930309) internal successors, (17321), 15382 states have internal predecessors, (17321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15383 states to 15383 states and 17321 transitions. [2023-12-20 01:12:18,159 INFO L78 Accepts]: Start accepts. Automaton has 15383 states and 17321 transitions. Word has length 141 [2023-12-20 01:12:18,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:12:18,159 INFO L495 AbstractCegarLoop]: Abstraction has 15383 states and 17321 transitions. [2023-12-20 01:12:18,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.543478260869565) internal successors, (301), 45 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:12:18,160 INFO L276 IsEmpty]: Start isEmpty. Operand 15383 states and 17321 transitions. [2023-12-20 01:12:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-20 01:12:18,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:12:18,163 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-12-20 01:12:18,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-20 01:12:18,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-20 01:12:18,363 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:12:18,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:12:18,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1219336595, now seen corresponding path program 1 times [2023-12-20 01:12:18,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:12:18,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971118603] [2023-12-20 01:12:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:12:18,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:12:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:12:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 58 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:19,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:12:19,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971118603] [2023-12-20 01:12:19,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971118603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:12:19,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674057351] [2023-12-20 01:12:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:12:19,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:12:19,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:12:19,734 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:12:19,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-20 01:12:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:12:19,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-20 01:12:19,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:12:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 58 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:21,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:12:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 58 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:12:24,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674057351] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:12:24,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:12:24,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 20] total 55 [2023-12-20 01:12:24,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111079113] [2023-12-20 01:12:24,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:12:24,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-20 01:12:24,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:12:24,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-20 01:12:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2023-12-20 01:12:24,732 INFO L87 Difference]: Start difference. First operand 15383 states and 17321 transitions. Second operand has 55 states, 55 states have (on average 6.927272727272728) internal successors, (381), 55 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:44,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:13:44,142 INFO L93 Difference]: Finished difference Result 30734 states and 34894 transitions. [2023-12-20 01:13:44,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 417 states. [2023-12-20 01:13:44,143 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 6.927272727272728) internal successors, (381), 55 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2023-12-20 01:13:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:13:44,160 INFO L225 Difference]: With dead ends: 30734 [2023-12-20 01:13:44,160 INFO L226 Difference]: Without dead ends: 23030 [2023-12-20 01:13:44,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 250 SyntacticMatches, 2 SemanticMatches, 468 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90188 ImplicationChecksByTransitivity, 69.8s TimeCoverageRelationStatistics Valid=21535, Invalid=198895, Unknown=0, NotChecked=0, Total=220430 [2023-12-20 01:13:44,170 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 4709 mSDsluCounter, 7987 mSDsCounter, 0 mSdLazyCounter, 8300 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 8204 SdHoareTripleChecker+Invalid, 8526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 8300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-20 01:13:44,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4709 Valid, 8204 Invalid, 8526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 8300 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-20 01:13:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23030 states. [2023-12-20 01:13:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23030 to 15948. [2023-12-20 01:13:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15948 states, 15947 states have (on average 1.1293660249576722) internal successors, (18010), 15947 states have internal predecessors, (18010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15948 states to 15948 states and 18010 transitions. [2023-12-20 01:13:47,295 INFO L78 Accepts]: Start accepts. Automaton has 15948 states and 18010 transitions. Word has length 143 [2023-12-20 01:13:47,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:13:47,296 INFO L495 AbstractCegarLoop]: Abstraction has 15948 states and 18010 transitions. [2023-12-20 01:13:47,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 6.927272727272728) internal successors, (381), 55 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 15948 states and 18010 transitions. [2023-12-20 01:13:47,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-20 01:13:47,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:13:47,300 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-12-20 01:13:47,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-20 01:13:47,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:13:47,506 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:13:47,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:13:47,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1245781981, now seen corresponding path program 1 times [2023-12-20 01:13:47,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:13:47,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169585389] [2023-12-20 01:13:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:13:47,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:13:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:13:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 43 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:48,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:13:48,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169585389] [2023-12-20 01:13:48,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169585389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:13:48,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25756453] [2023-12-20 01:13:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:13:48,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:13:48,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:13:48,506 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:13:48,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-20 01:13:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:13:48,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-20 01:13:48,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:13:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 51 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:50,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:13:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 43 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:55,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25756453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:13:55,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:13:55,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 23] total 60 [2023-12-20 01:13:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083080779] [2023-12-20 01:13:55,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:13:55,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 01:13:55,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:13:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 01:13:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=3203, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 01:13:55,622 INFO L87 Difference]: Start difference. First operand 15948 states and 18010 transitions. Second operand has 60 states, 60 states have (on average 6.35) internal successors, (381), 60 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 01:14:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2023-12-20 01:14:53,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39179 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=12064, Invalid=94538, Unknown=0, NotChecked=0, Total=106602 [2023-12-20 01:14:53,234 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 4383 mSDsluCounter, 5943 mSDsCounter, 0 mSdLazyCounter, 6110 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4383 SdHoareTripleChecker+Valid, 6160 SdHoareTripleChecker+Invalid, 6362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 6110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:14:53,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4383 Valid, 6160 Invalid, 6362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 6110 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-20 01:14:53,236 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 01:14:53,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-20 01:14:53,266 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:14:53,266 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:14:53,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:14:53,442 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (15948states) and FLOYD_HOARE automaton (currently 271 states, 60 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-12-3-2-2-3-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-3-2-2-1 context. [2023-12-20 01:14:53,446 INFO L445 BasicCegarLoop]: Path program histogram: [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:14:53,448 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 01:14:53,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:14:53 BoogieIcfgContainer [2023-12-20 01:14:53,450 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 01:14:53,450 INFO L158 Benchmark]: Toolchain (without parser) took 796256.16ms. Allocated memory was 216.0MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 162.3MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-20 01:14:53,450 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 216.0MB. Free memory is still 162.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 01:14:53,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.98ms. Allocated memory is still 216.0MB. Free memory was 162.3MB in the beginning and 148.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-20 01:14:53,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.51ms. Allocated memory is still 216.0MB. Free memory was 148.2MB in the beginning and 146.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 01:14:53,451 INFO L158 Benchmark]: Boogie Preprocessor took 59.79ms. Allocated memory is still 216.0MB. Free memory was 146.1MB in the beginning and 142.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 01:14:53,451 INFO L158 Benchmark]: RCFGBuilder took 509.90ms. Allocated memory is still 216.0MB. Free memory was 142.9MB in the beginning and 120.4MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-20 01:14:53,451 INFO L158 Benchmark]: TraceAbstraction took 795364.83ms. Allocated memory was 216.0MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 119.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-20 01:14:53,452 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 216.0MB. Free memory is still 162.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 274.98ms. Allocated memory is still 216.0MB. Free memory was 162.3MB in the beginning and 148.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.51ms. Allocated memory is still 216.0MB. Free memory was 148.2MB in the beginning and 146.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 59.79ms. Allocated memory is still 216.0MB. Free memory was 146.1MB in the beginning and 142.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 509.90ms. Allocated memory is still 216.0MB. Free memory was 142.9MB in the beginning and 120.4MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 795364.83ms. Allocated memory was 216.0MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 119.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.4GB. 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: 309]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 309). Cancelled while NwaCegarLoop was constructing difference of abstraction (15948states) and FLOYD_HOARE automaton (currently 271 states, 60 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-12-3-2-2-3-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 795.3s, OverallIterations: 42, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 656.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71426 SdHoareTripleChecker+Valid, 59.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71426 mSDsluCounter, 79835 SdHoareTripleChecker+Invalid, 53.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74419 mSDsCounter, 3066 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73543 IncrementalHoareTripleChecker+Invalid, 76609 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3066 mSolverCounterUnsat, 5416 mSDtfsCounter, 73543 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9195 GetRequests, 4666 SyntacticMatches, 14 SemanticMatches, 4514 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648093 ImplicationChecksByTransitivity, 548.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42280occurred in iteration=24, InterpolantAutomatonStates: 3588, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 45.2s AutomataMinimizationTime, 41 MinimizatonAttempts, 266927 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 85.8s InterpolantComputationTime, 6364 NumberOfCodeBlocks, 6364 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 8813 ConstructedInterpolants, 0 QuantifiedInterpolants, 184804 SizeOfPredicates, 178 NumberOfNonLiveVariables, 9126 ConjunctsInSsa, 589 ConjunctsInUnsatCore, 86 InterpolantComputations, 20 PerfectInterpolantSequences, 5473/9592 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