/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.6.1.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:20:38,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:20:38,869 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 01:20:38,872 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:20:38,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:20:38,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:20:38,885 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:20:38,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:20:38,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:20:38,886 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:20:38,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:20:38,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:20:38,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:20:38,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:20:38,887 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:20:38,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:20:38,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:20:38,888 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:20:38,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:20:38,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:20:38,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:20:38,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:20:38,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:20:38,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:20:38,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:20:38,893 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:20:38,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:20:38,894 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:20:38,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:20:38,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:20:38,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:20:38,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:20:38,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:20:38,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:20:38,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:20:38,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:20:38,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:20:38,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:20:38,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:20:38,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:20:38,896 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:20:38,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:20:38,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:20:38,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:20:39,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:20:39,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:20:39,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:20:39,130 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:20:39,130 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:20:39,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2023-12-20 01:20:40,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:20:40,325 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:20:40,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2023-12-20 01:20:40,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af519f43/a10e399320c64580ba3bfedcc3f7db6b/FLAGf813a70fe [2023-12-20 01:20:40,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af519f43/a10e399320c64580ba3bfedcc3f7db6b [2023-12-20 01:20:40,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:20:40,345 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:20:40,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:20:40,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:20:40,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:20:40,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516aed8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40, skipping insertion in model container [2023-12-20 01:20:40,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,401 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:20:40,564 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.6.1.ufo.BOUNDED-12.pals.c[15112,15125] [2023-12-20 01:20:40,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:20:40,574 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:20:40,606 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.6.1.ufo.BOUNDED-12.pals.c[15112,15125] [2023-12-20 01:20:40,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:20:40,617 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:20:40,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40 WrapperNode [2023-12-20 01:20:40,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:20:40,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:20:40,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:20:40,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:20:40,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,658 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 393 [2023-12-20 01:20:40,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:20:40,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:20:40,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:20:40,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:20:40,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,668 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,677 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 01:20:40,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,682 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:20:40,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:20:40,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:20:40,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:20:40,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (1/1) ... [2023-12-20 01:20:40,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:20:40,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:20:40,741 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 01:20:40,751 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 01:20:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:20:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:20:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:20:40,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:20:40,862 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:20:40,863 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:20:41,330 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:20:41,376 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:20:41,377 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:20:41,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:20:41 BoogieIcfgContainer [2023-12-20 01:20:41,377 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:20:41,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:20:41,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:20:41,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:20:41,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:20:40" (1/3) ... [2023-12-20 01:20:41,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f95db45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:20:41, skipping insertion in model container [2023-12-20 01:20:41,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:20:40" (2/3) ... [2023-12-20 01:20:41,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f95db45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:20:41, skipping insertion in model container [2023-12-20 01:20:41,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:20:41" (3/3) ... [2023-12-20 01:20:41,400 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2023-12-20 01:20:41,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:20:41,411 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:20:41,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:20:41,463 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;@353d86fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:20:41,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:20:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 91 states have (on average 1.8131868131868132) internal successors, (165), 92 states have internal predecessors, (165), 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 01:20:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 01:20:41,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:41,470 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 01:20:41,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:41,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash -644629225, now seen corresponding path program 1 times [2023-12-20 01:20:41,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:41,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547208293] [2023-12-20 01:20:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:41,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:41,593 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 01:20:41,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:41,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547208293] [2023-12-20 01:20:41,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547208293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:41,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:41,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:20:41,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426449571] [2023-12-20 01:20:41,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:41,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:20:41,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:41,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:20:41,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:20:41,616 INFO L87 Difference]: Start difference. First operand has 93 states, 91 states have (on average 1.8131868131868132) internal successors, (165), 92 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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 01:20:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:41,641 INFO L93 Difference]: Finished difference Result 143 states and 246 transitions. [2023-12-20 01:20:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:20:41,643 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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 01:20:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:41,648 INFO L225 Difference]: With dead ends: 143 [2023-12-20 01:20:41,648 INFO L226 Difference]: Without dead ends: 91 [2023-12-20 01:20:41,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:20:41,652 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:41,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:41,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-20 01:20:41,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-20 01:20:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.7777777777777777) internal successors, (160), 90 states have internal predecessors, (160), 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 01:20:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 160 transitions. [2023-12-20 01:20:41,675 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 160 transitions. Word has length 22 [2023-12-20 01:20:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:41,675 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 160 transitions. [2023-12-20 01:20:41,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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 01:20:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 160 transitions. [2023-12-20 01:20:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 01:20:41,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:41,676 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 01:20:41,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:20:41,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:41,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1961394329, now seen corresponding path program 1 times [2023-12-20 01:20:41,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:41,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927899343] [2023-12-20 01:20:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:41,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:41,805 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 01:20:41,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:41,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927899343] [2023-12-20 01:20:41,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927899343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:41,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:41,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:20:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485558764] [2023-12-20 01:20:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:41,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:20:41,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:20:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:20:41,808 INFO L87 Difference]: Start difference. First operand 91 states and 160 transitions. 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 01:20:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:41,861 INFO L93 Difference]: Finished difference Result 141 states and 239 transitions. [2023-12-20 01:20:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:20:41,862 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 01:20:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:41,862 INFO L225 Difference]: With dead ends: 141 [2023-12-20 01:20:41,863 INFO L226 Difference]: Without dead ends: 91 [2023-12-20 01:20:41,863 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 01:20:41,864 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:41,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 428 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-20 01:20:41,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-20 01:20:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 90 states have internal predecessors, (120), 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 01:20:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 120 transitions. [2023-12-20 01:20:41,869 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 120 transitions. Word has length 22 [2023-12-20 01:20:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:41,869 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 120 transitions. [2023-12-20 01:20:41,869 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 01:20:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 120 transitions. [2023-12-20 01:20:41,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 01:20:41,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:41,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:20:41,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:20:41,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:41,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:41,871 INFO L85 PathProgramCache]: Analyzing trace with hash 551736366, now seen corresponding path program 1 times [2023-12-20 01:20:41,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:41,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571121395] [2023-12-20 01:20:41,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:41,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:42,030 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 01:20:42,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:42,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571121395] [2023-12-20 01:20:42,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571121395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:42,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:42,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:20:42,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774622341] [2023-12-20 01:20:42,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:42,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:20:42,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:42,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:20:42,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:20:42,032 INFO L87 Difference]: Start difference. First operand 91 states and 120 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 01:20:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:42,343 INFO L93 Difference]: Finished difference Result 655 states and 1032 transitions. [2023-12-20 01:20:42,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 01:20:42,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 61 [2023-12-20 01:20:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:42,351 INFO L225 Difference]: With dead ends: 655 [2023-12-20 01:20:42,351 INFO L226 Difference]: Without dead ends: 608 [2023-12-20 01:20:42,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:20:42,355 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1047 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:42,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 2185 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:20:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-12-20 01:20:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 136. [2023-12-20 01:20:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4296296296296296) internal successors, (193), 135 states have internal predecessors, (193), 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 01:20:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 193 transitions. [2023-12-20 01:20:42,378 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 193 transitions. Word has length 61 [2023-12-20 01:20:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:42,378 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 193 transitions. [2023-12-20 01:20:42,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 01:20:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 193 transitions. [2023-12-20 01:20:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 01:20:42,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:42,386 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, 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 01:20:42,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:20:42,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:42,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1177047518, now seen corresponding path program 1 times [2023-12-20 01:20:42,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:42,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765665743] [2023-12-20 01:20:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:42,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:42,502 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 01:20:42,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:42,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765665743] [2023-12-20 01:20:42,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765665743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:42,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:42,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:20:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001497133] [2023-12-20 01:20:42,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:42,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:20:42,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:20:42,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:20:42,505 INFO L87 Difference]: Start difference. First operand 136 states and 193 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 01:20:42,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:42,521 INFO L93 Difference]: Finished difference Result 309 states and 472 transitions. [2023-12-20 01:20:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:20:42,522 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 01:20:42,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:42,523 INFO L225 Difference]: With dead ends: 309 [2023-12-20 01:20:42,523 INFO L226 Difference]: Without dead ends: 217 [2023-12-20 01:20:42,526 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 01:20:42,532 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 50 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:42,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 185 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:42,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-20 01:20:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2023-12-20 01:20:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4906542056074767) internal successors, (319), 214 states have internal predecessors, (319), 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 01:20:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 319 transitions. [2023-12-20 01:20:42,544 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 319 transitions. Word has length 63 [2023-12-20 01:20:42,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:42,545 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 319 transitions. [2023-12-20 01:20:42,545 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 01:20:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 319 transitions. [2023-12-20 01:20:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 01:20:42,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:42,546 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, 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 01:20:42,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:20:42,546 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:42,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1179192470, now seen corresponding path program 1 times [2023-12-20 01:20:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347595839] [2023-12-20 01:20:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:42,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:42,932 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 01:20:42,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:42,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347595839] [2023-12-20 01:20:42,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347595839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:42,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:42,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:20:42,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673256500] [2023-12-20 01:20:42,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:42,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:20:42,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:42,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:20:42,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:20:42,934 INFO L87 Difference]: Start difference. First operand 215 states and 319 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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 01:20:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:43,095 INFO L93 Difference]: Finished difference Result 388 states and 595 transitions. [2023-12-20 01:20:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:20:43,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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 01:20:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:43,097 INFO L225 Difference]: With dead ends: 388 [2023-12-20 01:20:43,097 INFO L226 Difference]: Without dead ends: 217 [2023-12-20 01:20:43,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-20 01:20:43,098 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 144 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:43,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 473 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-20 01:20:43,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2023-12-20 01:20:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4813084112149533) internal successors, (317), 214 states have internal predecessors, (317), 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 01:20:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 317 transitions. [2023-12-20 01:20:43,109 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 317 transitions. Word has length 63 [2023-12-20 01:20:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:43,110 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 317 transitions. [2023-12-20 01:20:43,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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 01:20:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 317 transitions. [2023-12-20 01:20:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:20:43,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:43,116 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, 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 01:20:43,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:20:43,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:43,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:43,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2113811586, now seen corresponding path program 1 times [2023-12-20 01:20:43,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:43,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976985488] [2023-12-20 01:20:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:43,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:43,266 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 01:20:43,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976985488] [2023-12-20 01:20:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976985488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:43,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:43,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:20:43,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408475278] [2023-12-20 01:20:43,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:43,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:20:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:43,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:20:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:20:43,269 INFO L87 Difference]: Start difference. First operand 215 states and 317 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 01:20:43,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:43,284 INFO L93 Difference]: Finished difference Result 223 states and 326 transitions. [2023-12-20 01:20:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:20:43,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 01:20:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:43,286 INFO L225 Difference]: With dead ends: 223 [2023-12-20 01:20:43,286 INFO L226 Difference]: Without dead ends: 221 [2023-12-20 01:20:43,286 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 01:20:43,287 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:43,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 340 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:43,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-20 01:20:43,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2023-12-20 01:20:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.4678899082568808) internal successors, (320), 218 states have internal predecessors, (320), 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 01:20:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 320 transitions. [2023-12-20 01:20:43,300 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 320 transitions. Word has length 64 [2023-12-20 01:20:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:43,300 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 320 transitions. [2023-12-20 01:20:43,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 01:20:43,300 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 320 transitions. [2023-12-20 01:20:43,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:20:43,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:43,301 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, 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 01:20:43,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:20:43,301 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:43,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1651742026, now seen corresponding path program 1 times [2023-12-20 01:20:43,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:43,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737437002] [2023-12-20 01:20:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:43,342 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 01:20:43,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:43,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737437002] [2023-12-20 01:20:43,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737437002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:43,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:43,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:20:43,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727273163] [2023-12-20 01:20:43,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:43,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:20:43,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:20:43,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:20:43,344 INFO L87 Difference]: Start difference. First operand 219 states and 320 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:43,356 INFO L93 Difference]: Finished difference Result 405 states and 613 transitions. [2023-12-20 01:20:43,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:20:43,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-12-20 01:20:43,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:43,358 INFO L225 Difference]: With dead ends: 405 [2023-12-20 01:20:43,358 INFO L226 Difference]: Without dead ends: 309 [2023-12-20 01:20:43,358 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 01:20:43,359 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 66 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:43,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 253 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-20 01:20:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2023-12-20 01:20:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.4934640522875817) internal successors, (457), 306 states have internal predecessors, (457), 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 01:20:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 457 transitions. [2023-12-20 01:20:43,367 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 457 transitions. Word has length 65 [2023-12-20 01:20:43,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:43,367 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 457 transitions. [2023-12-20 01:20:43,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 457 transitions. [2023-12-20 01:20:43,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:20:43,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:43,368 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, 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 01:20:43,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:20:43,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:43,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:43,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2062128714, now seen corresponding path program 1 times [2023-12-20 01:20:43,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:43,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16971445] [2023-12-20 01:20:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:43,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:43,412 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 01:20:43,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:43,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16971445] [2023-12-20 01:20:43,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16971445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:43,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:43,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:20:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648247461] [2023-12-20 01:20:43,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:43,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:20:43,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:20:43,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:20:43,415 INFO L87 Difference]: Start difference. First operand 307 states and 457 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:43,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:43,430 INFO L93 Difference]: Finished difference Result 805 states and 1237 transitions. [2023-12-20 01:20:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:20:43,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-12-20 01:20:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:43,433 INFO L225 Difference]: With dead ends: 805 [2023-12-20 01:20:43,433 INFO L226 Difference]: Without dead ends: 544 [2023-12-20 01:20:43,434 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 01:20:43,435 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:43,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 259 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-12-20 01:20:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 542. [2023-12-20 01:20:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 1.5138632162661738) internal successors, (819), 541 states have internal predecessors, (819), 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 01:20:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 819 transitions. [2023-12-20 01:20:43,448 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 819 transitions. Word has length 65 [2023-12-20 01:20:43,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:43,448 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 819 transitions. [2023-12-20 01:20:43,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:43,448 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 819 transitions. [2023-12-20 01:20:43,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:20:43,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:43,448 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, 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 01:20:43,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:20:43,449 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:43,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:43,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2004199350, now seen corresponding path program 1 times [2023-12-20 01:20:43,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:43,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350452512] [2023-12-20 01:20:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:43,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:43,520 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 01:20:43,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:43,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350452512] [2023-12-20 01:20:43,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350452512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:43,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:43,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:20:43,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337099456] [2023-12-20 01:20:43,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:43,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:20:43,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:20:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:20:43,523 INFO L87 Difference]: Start difference. First operand 542 states and 819 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:43,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:43,557 INFO L93 Difference]: Finished difference Result 1486 states and 2281 transitions. [2023-12-20 01:20:43,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:20:43,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-12-20 01:20:43,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:43,561 INFO L225 Difference]: With dead ends: 1486 [2023-12-20 01:20:43,561 INFO L226 Difference]: Without dead ends: 990 [2023-12-20 01:20:43,563 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 01:20:43,564 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 60 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:43,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 255 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:43,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-12-20 01:20:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2023-12-20 01:20:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 987 states have (on average 1.5146909827760893) internal successors, (1495), 987 states have internal predecessors, (1495), 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 01:20:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1495 transitions. [2023-12-20 01:20:43,590 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1495 transitions. Word has length 65 [2023-12-20 01:20:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:43,590 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1495 transitions. [2023-12-20 01:20:43,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1495 transitions. [2023-12-20 01:20:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:20:43,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:43,593 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, 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 01:20:43,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:20:43,593 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:43,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:43,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1378543286, now seen corresponding path program 1 times [2023-12-20 01:20:43,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:43,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776175524] [2023-12-20 01:20:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:43,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:43,630 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 01:20:43,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:43,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776175524] [2023-12-20 01:20:43,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776175524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:43,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:43,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:20:43,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009545557] [2023-12-20 01:20:43,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:43,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:20:43,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:43,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:20:43,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:20:43,632 INFO L87 Difference]: Start difference. First operand 988 states and 1495 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:43,667 INFO L93 Difference]: Finished difference Result 2776 states and 4225 transitions. [2023-12-20 01:20:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:20:43,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-12-20 01:20:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:43,673 INFO L225 Difference]: With dead ends: 2776 [2023-12-20 01:20:43,673 INFO L226 Difference]: Without dead ends: 1834 [2023-12-20 01:20:43,674 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 01:20:43,674 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:43,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 257 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2023-12-20 01:20:43,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1832. [2023-12-20 01:20:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 1.5024576734025124) internal successors, (2751), 1831 states have internal predecessors, (2751), 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 01:20:43,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2751 transitions. [2023-12-20 01:20:43,719 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2751 transitions. Word has length 65 [2023-12-20 01:20:43,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:43,719 INFO L495 AbstractCegarLoop]: Abstraction has 1832 states and 2751 transitions. [2023-12-20 01:20:43,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:43,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2751 transitions. [2023-12-20 01:20:43,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:20:43,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:43,721 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, 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 01:20:43,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:20:43,721 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:43,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:43,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2027690570, now seen corresponding path program 1 times [2023-12-20 01:20:43,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:43,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884318711] [2023-12-20 01:20:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:43,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:43,755 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 01:20:43,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:43,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884318711] [2023-12-20 01:20:43,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884318711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:43,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:43,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:20:43,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286148747] [2023-12-20 01:20:43,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:43,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:20:43,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:43,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:20:43,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:20:43,757 INFO L87 Difference]: Start difference. First operand 1832 states and 2751 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:43,809 INFO L93 Difference]: Finished difference Result 5212 states and 7825 transitions. [2023-12-20 01:20:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:20:43,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-12-20 01:20:43,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:43,817 INFO L225 Difference]: With dead ends: 5212 [2023-12-20 01:20:43,818 INFO L226 Difference]: Without dead ends: 3426 [2023-12-20 01:20:43,819 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 01:20:43,820 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:43,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 259 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2023-12-20 01:20:43,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3424. [2023-12-20 01:20:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3423 states have (on average 1.4814490213263218) internal successors, (5071), 3423 states have internal predecessors, (5071), 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 01:20:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 5071 transitions. [2023-12-20 01:20:43,894 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 5071 transitions. Word has length 65 [2023-12-20 01:20:43,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:43,895 INFO L495 AbstractCegarLoop]: Abstraction has 3424 states and 5071 transitions. [2023-12-20 01:20:43,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 5071 transitions. [2023-12-20 01:20:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:20:43,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:43,895 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, 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 01:20:43,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:20:43,896 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:43,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:43,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1964255414, now seen corresponding path program 1 times [2023-12-20 01:20:43,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:43,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480171958] [2023-12-20 01:20:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:43,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:43,931 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 01:20:43,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:43,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480171958] [2023-12-20 01:20:43,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480171958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:43,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:43,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:20:43,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404947711] [2023-12-20 01:20:43,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:43,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:20:43,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:43,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:20:43,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:20:43,933 INFO L87 Difference]: Start difference. First operand 3424 states and 5071 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:44,048 INFO L93 Difference]: Finished difference Result 9796 states and 14449 transitions. [2023-12-20 01:20:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:20:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-12-20 01:20:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:44,064 INFO L225 Difference]: With dead ends: 9796 [2023-12-20 01:20:44,064 INFO L226 Difference]: Without dead ends: 6418 [2023-12-20 01:20:44,069 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 01:20:44,069 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 62 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:44,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 261 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2023-12-20 01:20:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6416. [2023-12-20 01:20:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6416 states, 6415 states have (on average 1.4539360872954015) internal successors, (9327), 6415 states have internal predecessors, (9327), 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 01:20:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6416 states to 6416 states and 9327 transitions. [2023-12-20 01:20:44,214 INFO L78 Accepts]: Start accepts. Automaton has 6416 states and 9327 transitions. Word has length 65 [2023-12-20 01:20:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:44,214 INFO L495 AbstractCegarLoop]: Abstraction has 6416 states and 9327 transitions. [2023-12-20 01:20:44,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 01:20:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6416 states and 9327 transitions. [2023-12-20 01:20:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 01:20:44,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:44,216 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:20:44,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:20:44,217 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:44,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash 252495101, now seen corresponding path program 1 times [2023-12-20 01:20:44,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:44,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014537547] [2023-12-20 01:20:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:44,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:20:44,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014537547] [2023-12-20 01:20:44,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014537547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:44,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:44,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:20:44,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173274899] [2023-12-20 01:20:44,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:44,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:20:44,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:44,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:20:44,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:20:44,338 INFO L87 Difference]: Start difference. First operand 6416 states and 9327 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 01:20:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:44,979 INFO L93 Difference]: Finished difference Result 44062 states and 64150 transitions. [2023-12-20 01:20:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:20:44,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) Word has length 85 [2023-12-20 01:20:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:45,060 INFO L225 Difference]: With dead ends: 44062 [2023-12-20 01:20:45,060 INFO L226 Difference]: Without dead ends: 39580 [2023-12-20 01:20:45,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:20:45,071 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 869 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:45,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1112 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:20:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39580 states. [2023-12-20 01:20:45,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39580 to 11856. [2023-12-20 01:20:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11856 states, 11855 states have (on average 1.4480809784900885) internal successors, (17167), 11855 states have internal predecessors, (17167), 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 01:20:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11856 states to 11856 states and 17167 transitions. [2023-12-20 01:20:45,595 INFO L78 Accepts]: Start accepts. Automaton has 11856 states and 17167 transitions. Word has length 85 [2023-12-20 01:20:45,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:45,596 INFO L495 AbstractCegarLoop]: Abstraction has 11856 states and 17167 transitions. [2023-12-20 01:20:45,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 01:20:45,596 INFO L276 IsEmpty]: Start isEmpty. Operand 11856 states and 17167 transitions. [2023-12-20 01:20:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 01:20:45,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:45,599 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:20:45,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:20:45,599 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:45,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash -157891587, now seen corresponding path program 1 times [2023-12-20 01:20:45,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:45,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104658366] [2023-12-20 01:20:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:45,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 01:20:45,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:45,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104658366] [2023-12-20 01:20:45,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104658366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:45,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:45,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:20:45,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456075934] [2023-12-20 01:20:45,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:45,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:20:45,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:45,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:20:45,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:20:45,730 INFO L87 Difference]: Start difference. First operand 11856 states and 17167 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 01:20:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:46,540 INFO L93 Difference]: Finished difference Result 50430 states and 73366 transitions. [2023-12-20 01:20:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:20:46,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 85 [2023-12-20 01:20:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:46,605 INFO L225 Difference]: With dead ends: 50430 [2023-12-20 01:20:46,605 INFO L226 Difference]: Without dead ends: 44060 [2023-12-20 01:20:46,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:20:46,616 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 871 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:46,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1081 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:20:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44060 states. [2023-12-20 01:20:47,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44060 to 20464. [2023-12-20 01:20:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20464 states, 20463 states have (on average 1.4441186531789083) internal successors, (29551), 20463 states have internal predecessors, (29551), 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 01:20:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20464 states to 20464 states and 29551 transitions. [2023-12-20 01:20:47,228 INFO L78 Accepts]: Start accepts. Automaton has 20464 states and 29551 transitions. Word has length 85 [2023-12-20 01:20:47,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:47,229 INFO L495 AbstractCegarLoop]: Abstraction has 20464 states and 29551 transitions. [2023-12-20 01:20:47,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 01:20:47,229 INFO L276 IsEmpty]: Start isEmpty. Operand 20464 states and 29551 transitions. [2023-12-20 01:20:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 01:20:47,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:47,231 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:20:47,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:20:47,232 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:47,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:47,232 INFO L85 PathProgramCache]: Analyzing trace with hash -386530819, now seen corresponding path program 1 times [2023-12-20 01:20:47,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:47,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068914197] [2023-12-20 01:20:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:47,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:20:47,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068914197] [2023-12-20 01:20:47,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068914197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:47,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:47,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:20:47,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165020716] [2023-12-20 01:20:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:47,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:20:47,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:20:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:20:47,418 INFO L87 Difference]: Start difference. First operand 20464 states and 29551 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 01:20:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:48,392 INFO L93 Difference]: Finished difference Result 56798 states and 82550 transitions. [2023-12-20 01:20:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:20:48,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 85 [2023-12-20 01:20:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:48,475 INFO L225 Difference]: With dead ends: 56798 [2023-12-20 01:20:48,476 INFO L226 Difference]: Without dead ends: 50428 [2023-12-20 01:20:48,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:20:48,489 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 911 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:48,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1098 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:20:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50428 states. [2023-12-20 01:20:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50428 to 26832. [2023-12-20 01:20:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26832 states, 26831 states have (on average 1.4436659088367934) internal successors, (38735), 26831 states have internal predecessors, (38735), 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 01:20:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26832 states to 26832 states and 38735 transitions. [2023-12-20 01:20:49,228 INFO L78 Accepts]: Start accepts. Automaton has 26832 states and 38735 transitions. Word has length 85 [2023-12-20 01:20:49,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:49,228 INFO L495 AbstractCegarLoop]: Abstraction has 26832 states and 38735 transitions. [2023-12-20 01:20:49,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 01:20:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 26832 states and 38735 transitions. [2023-12-20 01:20:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 01:20:49,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:49,231 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:20:49,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:20:49,231 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:49,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:49,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1012186883, now seen corresponding path program 1 times [2023-12-20 01:20:49,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:49,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770799562] [2023-12-20 01:20:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:49,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 01:20:49,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:49,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770799562] [2023-12-20 01:20:49,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770799562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:49,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:49,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:20:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818534671] [2023-12-20 01:20:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:20:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:20:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:20:49,369 INFO L87 Difference]: Start difference. First operand 26832 states and 38735 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 01:20:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:50,498 INFO L93 Difference]: Finished difference Result 63166 states and 91734 transitions. [2023-12-20 01:20:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:20:50,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 85 [2023-12-20 01:20:50,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:50,567 INFO L225 Difference]: With dead ends: 63166 [2023-12-20 01:20:50,568 INFO L226 Difference]: Without dead ends: 56796 [2023-12-20 01:20:50,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:20:50,582 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 965 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:50,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 1061 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:20:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56796 states. [2023-12-20 01:20:51,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56796 to 33200. [2023-12-20 01:20:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33200 states, 33199 states have (on average 1.4433868490014758) internal successors, (47919), 33199 states have internal predecessors, (47919), 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 01:20:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33200 states to 33200 states and 47919 transitions. [2023-12-20 01:20:51,602 INFO L78 Accepts]: Start accepts. Automaton has 33200 states and 47919 transitions. Word has length 85 [2023-12-20 01:20:51,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:51,603 INFO L495 AbstractCegarLoop]: Abstraction has 33200 states and 47919 transitions. [2023-12-20 01:20:51,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 01:20:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 33200 states and 47919 transitions. [2023-12-20 01:20:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 01:20:51,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:51,606 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:20:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:20:51,607 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:51,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:51,607 INFO L85 PathProgramCache]: Analyzing trace with hash -123453443, now seen corresponding path program 1 times [2023-12-20 01:20:51,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:51,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908147554] [2023-12-20 01:20:51,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:51,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 01:20:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908147554] [2023-12-20 01:20:51,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908147554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:51,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:51,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:20:51,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42560078] [2023-12-20 01:20:51,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:51,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:20:51,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:51,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:20:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:20:51,769 INFO L87 Difference]: Start difference. First operand 33200 states and 47919 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 01:20:53,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:53,144 INFO L93 Difference]: Finished difference Result 69534 states and 100918 transitions. [2023-12-20 01:20:53,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:20:53,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 85 [2023-12-20 01:20:53,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:53,228 INFO L225 Difference]: With dead ends: 69534 [2023-12-20 01:20:53,228 INFO L226 Difference]: Without dead ends: 63164 [2023-12-20 01:20:53,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:20:53,249 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 883 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:53,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1098 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:20:53,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63164 states. [2023-12-20 01:20:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63164 to 39568. [2023-12-20 01:20:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39568 states, 39567 states have (on average 1.4431976141734273) internal successors, (57103), 39567 states have internal predecessors, (57103), 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 01:20:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39568 states to 39568 states and 57103 transitions. [2023-12-20 01:20:54,442 INFO L78 Accepts]: Start accepts. Automaton has 39568 states and 57103 transitions. Word has length 85 [2023-12-20 01:20:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:54,443 INFO L495 AbstractCegarLoop]: Abstraction has 39568 states and 57103 transitions. [2023-12-20 01:20:54,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 01:20:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 39568 states and 57103 transitions. [2023-12-20 01:20:54,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 01:20:54,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:54,446 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:20:54,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:20:54,447 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:54,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:54,447 INFO L85 PathProgramCache]: Analyzing trace with hash -426474755, now seen corresponding path program 1 times [2023-12-20 01:20:54,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:54,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350835608] [2023-12-20 01:20:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:54,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:20:54,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:54,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350835608] [2023-12-20 01:20:54,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350835608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:54,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:54,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:20:54,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441134818] [2023-12-20 01:20:54,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:54,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:20:54,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:54,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:20:54,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:20:54,552 INFO L87 Difference]: Start difference. First operand 39568 states and 57103 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 01:20:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:56,092 INFO L93 Difference]: Finished difference Result 75902 states and 110102 transitions. [2023-12-20 01:20:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:20:56,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 85 [2023-12-20 01:20:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:56,184 INFO L225 Difference]: With dead ends: 75902 [2023-12-20 01:20:56,184 INFO L226 Difference]: Without dead ends: 69532 [2023-12-20 01:20:56,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:20:56,203 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 822 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:56,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1217 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:20:56,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69532 states. [2023-12-20 01:20:57,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69532 to 45936. [2023-12-20 01:20:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45936 states, 45935 states have (on average 1.4430608468488082) internal successors, (66287), 45935 states have internal predecessors, (66287), 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 01:20:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45936 states to 45936 states and 66287 transitions. [2023-12-20 01:20:57,620 INFO L78 Accepts]: Start accepts. Automaton has 45936 states and 66287 transitions. Word has length 85 [2023-12-20 01:20:57,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:20:57,621 INFO L495 AbstractCegarLoop]: Abstraction has 45936 states and 66287 transitions. [2023-12-20 01:20:57,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 01:20:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 45936 states and 66287 transitions. [2023-12-20 01:20:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 01:20:57,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:20:57,642 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:20:57,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:20:57,642 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:20:57,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:20:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1951030758, now seen corresponding path program 1 times [2023-12-20 01:20:57,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:20:57,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924842796] [2023-12-20 01:20:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:20:57,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:20:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:20:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:20:57,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:20:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924842796] [2023-12-20 01:20:57,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924842796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:20:57,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:20:57,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:20:57,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824830214] [2023-12-20 01:20:57,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:20:57,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:20:57,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:20:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:20:57,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:20:57,763 INFO L87 Difference]: Start difference. First operand 45936 states and 66287 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 01:20:58,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:58,804 INFO L93 Difference]: Finished difference Result 91828 states and 132529 transitions. [2023-12-20 01:20:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:20:58,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2023-12-20 01:20:58,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:58,859 INFO L225 Difference]: With dead ends: 91828 [2023-12-20 01:20:58,859 INFO L226 Difference]: Without dead ends: 45938 [2023-12-20 01:20:58,882 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 01:20:58,883 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 53 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:58,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 266 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:20:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45938 states. [2023-12-20 01:20:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45938 to 45936. [2023-12-20 01:20:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45936 states, 45935 states have (on average 1.428083160988353) internal successors, (65599), 45935 states have internal predecessors, (65599), 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 01:21:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45936 states to 45936 states and 65599 transitions. [2023-12-20 01:21:00,018 INFO L78 Accepts]: Start accepts. Automaton has 45936 states and 65599 transitions. Word has length 86 [2023-12-20 01:21:00,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:00,018 INFO L495 AbstractCegarLoop]: Abstraction has 45936 states and 65599 transitions. [2023-12-20 01:21:00,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 01:21:00,018 INFO L276 IsEmpty]: Start isEmpty. Operand 45936 states and 65599 transitions. [2023-12-20 01:21:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 01:21:00,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:00,021 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:21:00,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:21:00,021 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:00,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:00,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2126529701, now seen corresponding path program 1 times [2023-12-20 01:21:00,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:00,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447824529] [2023-12-20 01:21:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:00,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:00,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:00,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447824529] [2023-12-20 01:21:00,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447824529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:21:00,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:21:00,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:21:00,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91238304] [2023-12-20 01:21:00,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:21:00,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:21:00,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:21:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:21:00,080 INFO L87 Difference]: Start difference. First operand 45936 states and 65599 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 01:21:00,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:00,583 INFO L93 Difference]: Finished difference Result 62760 states and 89862 transitions. [2023-12-20 01:21:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:21:00,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2023-12-20 01:21:00,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:00,598 INFO L225 Difference]: With dead ends: 62760 [2023-12-20 01:21:00,598 INFO L226 Difference]: Without dead ends: 16870 [2023-12-20 01:21:00,612 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 01:21:00,613 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 47 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:00,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 263 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:21:00,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16870 states. [2023-12-20 01:21:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16870 to 16863. [2023-12-20 01:21:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16863 states, 16862 states have (on average 1.4269956114339937) internal successors, (24062), 16862 states have internal predecessors, (24062), 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 01:21:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16863 states to 16863 states and 24062 transitions. [2023-12-20 01:21:01,076 INFO L78 Accepts]: Start accepts. Automaton has 16863 states and 24062 transitions. Word has length 87 [2023-12-20 01:21:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:01,076 INFO L495 AbstractCegarLoop]: Abstraction has 16863 states and 24062 transitions. [2023-12-20 01:21:01,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 01:21:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 16863 states and 24062 transitions. [2023-12-20 01:21:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 01:21:01,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:01,079 INFO L195 NwaCegarLoop]: trace histogram [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, 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 01:21:01,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:21:01,079 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:01,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:01,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1925920404, now seen corresponding path program 1 times [2023-12-20 01:21:01,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:01,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928493916] [2023-12-20 01:21:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:01,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:01,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:01,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928493916] [2023-12-20 01:21:01,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928493916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:21:01,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:21:01,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:21:01,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006158429] [2023-12-20 01:21:01,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:21:01,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:21:01,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:01,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:21:01,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:21:01,142 INFO L87 Difference]: Start difference. First operand 16863 states and 24062 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 01:21:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:01,348 INFO L93 Difference]: Finished difference Result 25267 states and 36064 transitions. [2023-12-20 01:21:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:21:01,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2023-12-20 01:21:01,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:01,355 INFO L225 Difference]: With dead ends: 25267 [2023-12-20 01:21:01,355 INFO L226 Difference]: Without dead ends: 8465 [2023-12-20 01:21:01,364 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 01:21:01,364 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 49 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:01,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 242 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:21:01,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8465 states. [2023-12-20 01:21:01,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8465 to 8463. [2023-12-20 01:21:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8463 states, 8462 states have (on average 1.4112502954384307) internal successors, (11942), 8462 states have internal predecessors, (11942), 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 01:21:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8463 states to 8463 states and 11942 transitions. [2023-12-20 01:21:01,694 INFO L78 Accepts]: Start accepts. Automaton has 8463 states and 11942 transitions. Word has length 88 [2023-12-20 01:21:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:01,694 INFO L495 AbstractCegarLoop]: Abstraction has 8463 states and 11942 transitions. [2023-12-20 01:21:01,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 01:21:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 8463 states and 11942 transitions. [2023-12-20 01:21:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:21:01,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:01,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:01,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 01:21:01,695 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:01,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:01,696 INFO L85 PathProgramCache]: Analyzing trace with hash -718208830, now seen corresponding path program 1 times [2023-12-20 01:21:01,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:01,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173895914] [2023-12-20 01:21:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:01,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:01,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:01,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173895914] [2023-12-20 01:21:01,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173895914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:21:01,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:21:01,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:21:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3063546] [2023-12-20 01:21:01,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:21:01,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:21:01,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:21:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:21:01,746 INFO L87 Difference]: Start difference. First operand 8463 states and 11942 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 01:21:01,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:01,828 INFO L93 Difference]: Finished difference Result 12667 states and 17884 transitions. [2023-12-20 01:21:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:21:01,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2023-12-20 01:21:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:01,831 INFO L225 Difference]: With dead ends: 12667 [2023-12-20 01:21:01,831 INFO L226 Difference]: Without dead ends: 4265 [2023-12-20 01:21:01,834 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 01:21:01,835 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 46 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:01,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 227 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:21:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2023-12-20 01:21:01,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 4263. [2023-12-20 01:21:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4262 states have (on average 1.3941811356170812) internal successors, (5942), 4262 states have internal predecessors, (5942), 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 01:21:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 5942 transitions. [2023-12-20 01:21:01,913 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 5942 transitions. Word has length 90 [2023-12-20 01:21:01,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:01,913 INFO L495 AbstractCegarLoop]: Abstraction has 4263 states and 5942 transitions. [2023-12-20 01:21:01,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 01:21:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 5942 transitions. [2023-12-20 01:21:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 01:21:01,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:01,914 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:01,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 01:21:01,914 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:01,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:01,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1658494064, now seen corresponding path program 1 times [2023-12-20 01:21:01,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:01,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051264532] [2023-12-20 01:21:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:01,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:01,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:01,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051264532] [2023-12-20 01:21:01,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051264532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:21:01,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:21:01,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:21:01,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266094733] [2023-12-20 01:21:01,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:21:01,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:21:01,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:01,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:21:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:21:01,974 INFO L87 Difference]: Start difference. First operand 4263 states and 5942 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 01:21:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:02,017 INFO L93 Difference]: Finished difference Result 6367 states and 8884 transitions. [2023-12-20 01:21:02,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:21:02,018 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 92 [2023-12-20 01:21:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:02,019 INFO L225 Difference]: With dead ends: 6367 [2023-12-20 01:21:02,019 INFO L226 Difference]: Without dead ends: 2165 [2023-12-20 01:21:02,020 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 01:21:02,021 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 43 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:02,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 212 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:21:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2023-12-20 01:21:02,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2163. [2023-12-20 01:21:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.3746530989824237) internal successors, (2972), 2162 states have internal predecessors, (2972), 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 01:21:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2972 transitions. [2023-12-20 01:21:02,060 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2972 transitions. Word has length 92 [2023-12-20 01:21:02,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:02,060 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 2972 transitions. [2023-12-20 01:21:02,060 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 01:21:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2972 transitions. [2023-12-20 01:21:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 01:21:02,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:02,061 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:02,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 01:21:02,062 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:02,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash 993978782, now seen corresponding path program 1 times [2023-12-20 01:21:02,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231889071] [2023-12-20 01:21:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:02,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:02,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:02,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231889071] [2023-12-20 01:21:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231889071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:21:02,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:21:02,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:21:02,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698574766] [2023-12-20 01:21:02,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:21:02,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:21:02,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:21:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:21:02,113 INFO L87 Difference]: Start difference. First operand 2163 states and 2972 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 01:21:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:02,138 INFO L93 Difference]: Finished difference Result 3217 states and 4429 transitions. [2023-12-20 01:21:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:21:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2023-12-20 01:21:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:02,139 INFO L225 Difference]: With dead ends: 3217 [2023-12-20 01:21:02,139 INFO L226 Difference]: Without dead ends: 1115 [2023-12-20 01:21:02,140 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 01:21:02,141 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 40 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:02,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 197 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:21:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-12-20 01:21:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1113. [2023-12-20 01:21:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 1.3507194244604317) internal successors, (1502), 1112 states have internal predecessors, (1502), 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 01:21:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1502 transitions. [2023-12-20 01:21:02,161 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1502 transitions. Word has length 94 [2023-12-20 01:21:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:02,161 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1502 transitions. [2023-12-20 01:21:02,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 01:21:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1502 transitions. [2023-12-20 01:21:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:21:02,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:02,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:02,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:21:02,162 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:02,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash 65849420, now seen corresponding path program 1 times [2023-12-20 01:21:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:02,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843079785] [2023-12-20 01:21:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:02,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:03,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:03,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843079785] [2023-12-20 01:21:03,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843079785] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:21:03,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62281086] [2023-12-20 01:21:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:03,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:21:03,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:21:03,143 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 01:21:03,144 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 01:21:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:03,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 01:21:03,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:21:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:21:03,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:21:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:21:03,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62281086] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:21:03,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:21:03,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 4] total 17 [2023-12-20 01:21:03,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075204799] [2023-12-20 01:21:03,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:21:03,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 01:21:03,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 01:21:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:21:03,708 INFO L87 Difference]: Start difference. First operand 1113 states and 1502 transitions. Second operand has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 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 01:21:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:06,898 INFO L93 Difference]: Finished difference Result 7138 states and 9535 transitions. [2023-12-20 01:21:06,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 01:21:06,898 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 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 96 [2023-12-20 01:21:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:06,904 INFO L225 Difference]: With dead ends: 7138 [2023-12-20 01:21:06,904 INFO L226 Difference]: Without dead ends: 6086 [2023-12-20 01:21:06,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=628, Invalid=2452, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 01:21:06,907 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 1763 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:06,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 705 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 01:21:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2023-12-20 01:21:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 5652. [2023-12-20 01:21:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5651 states have (on average 1.3130419394797381) internal successors, (7420), 5651 states have internal predecessors, (7420), 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 01:21:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 7420 transitions. [2023-12-20 01:21:07,068 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 7420 transitions. Word has length 96 [2023-12-20 01:21:07,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:07,068 INFO L495 AbstractCegarLoop]: Abstraction has 5652 states and 7420 transitions. [2023-12-20 01:21:07,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 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 01:21:07,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 7420 transitions. [2023-12-20 01:21:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 01:21:07,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:07,070 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:07,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 01:21:07,276 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,SelfDestructingSolverStorable24 [2023-12-20 01:21:07,277 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:07,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:07,277 INFO L85 PathProgramCache]: Analyzing trace with hash -838504705, now seen corresponding path program 1 times [2023-12-20 01:21:07,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:07,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461101893] [2023-12-20 01:21:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:07,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:07,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461101893] [2023-12-20 01:21:07,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461101893] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:21:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313338783] [2023-12-20 01:21:07,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:07,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:21:07,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:21:07,621 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 01:21:07,624 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 01:21:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:07,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-20 01:21:07,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:21:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:08,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:21:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:09,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313338783] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:21:09,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:21:09,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-20 01:21:09,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107534976] [2023-12-20 01:21:09,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:21:09,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 01:21:09,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 01:21:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2023-12-20 01:21:09,161 INFO L87 Difference]: Start difference. First operand 5652 states and 7420 transitions. Second operand has 23 states, 23 states have (on average 11.08695652173913) internal successors, (255), 22 states have internal predecessors, (255), 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 01:21:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:11,256 INFO L93 Difference]: Finished difference Result 25763 states and 33776 transitions. [2023-12-20 01:21:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-20 01:21:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.08695652173913) internal successors, (255), 22 states have internal predecessors, (255), 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 97 [2023-12-20 01:21:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:11,274 INFO L225 Difference]: With dead ends: 25763 [2023-12-20 01:21:11,274 INFO L226 Difference]: Without dead ends: 20339 [2023-12-20 01:21:11,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=518, Invalid=1932, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 01:21:11,283 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 1981 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:11,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 938 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 01:21:11,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20339 states. [2023-12-20 01:21:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20339 to 19625. [2023-12-20 01:21:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19625 states, 19624 states have (on average 1.2872503057480635) internal successors, (25261), 19624 states have internal predecessors, (25261), 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 01:21:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19625 states to 19625 states and 25261 transitions. [2023-12-20 01:21:11,822 INFO L78 Accepts]: Start accepts. Automaton has 19625 states and 25261 transitions. Word has length 97 [2023-12-20 01:21:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:11,823 INFO L495 AbstractCegarLoop]: Abstraction has 19625 states and 25261 transitions. [2023-12-20 01:21:11,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.08695652173913) internal successors, (255), 22 states have internal predecessors, (255), 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 01:21:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 19625 states and 25261 transitions. [2023-12-20 01:21:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 01:21:11,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:11,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:11,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 01:21:12,029 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,SelfDestructingSolverStorable25 [2023-12-20 01:21:12,029 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:12,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:12,030 INFO L85 PathProgramCache]: Analyzing trace with hash 217600589, now seen corresponding path program 1 times [2023-12-20 01:21:12,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:12,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823367241] [2023-12-20 01:21:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:12,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:12,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:12,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823367241] [2023-12-20 01:21:12,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823367241] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:21:12,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479309518] [2023-12-20 01:21:12,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:12,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:21:12,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:21:12,281 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 01:21:12,285 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 01:21:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:12,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 01:21:12,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:21:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:12,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:21:13,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:13,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479309518] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:21:13,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:21:13,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-20 01:21:13,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329070282] [2023-12-20 01:21:13,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:21:13,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 01:21:13,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:13,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 01:21:13,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2023-12-20 01:21:13,981 INFO L87 Difference]: Start difference. First operand 19625 states and 25261 transitions. Second operand has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 28 states have internal predecessors, (271), 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 01:21:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:16,328 INFO L93 Difference]: Finished difference Result 45227 states and 58083 transitions. [2023-12-20 01:21:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-20 01:21:16,328 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 28 states have internal predecessors, (271), 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 97 [2023-12-20 01:21:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:16,364 INFO L225 Difference]: With dead ends: 45227 [2023-12-20 01:21:16,364 INFO L226 Difference]: Without dead ends: 25743 [2023-12-20 01:21:16,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=869, Invalid=3961, Unknown=0, NotChecked=0, Total=4830 [2023-12-20 01:21:16,379 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1417 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:16,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 1564 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 01:21:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25743 states. [2023-12-20 01:21:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25743 to 22677. [2023-12-20 01:21:17,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22677 states, 22676 states have (on average 1.26865408361263) internal successors, (28768), 22676 states have internal predecessors, (28768), 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 01:21:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22677 states to 22677 states and 28768 transitions. [2023-12-20 01:21:17,094 INFO L78 Accepts]: Start accepts. Automaton has 22677 states and 28768 transitions. Word has length 97 [2023-12-20 01:21:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:17,094 INFO L495 AbstractCegarLoop]: Abstraction has 22677 states and 28768 transitions. [2023-12-20 01:21:17,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 28 states have internal predecessors, (271), 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 01:21:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 22677 states and 28768 transitions. [2023-12-20 01:21:17,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 01:21:17,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:17,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:17,108 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 01:21:17,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:21:17,301 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:17,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:17,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1415874419, now seen corresponding path program 1 times [2023-12-20 01:21:17,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:17,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64243664] [2023-12-20 01:21:17,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:17,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:17,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64243664] [2023-12-20 01:21:17,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64243664] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:21:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912543710] [2023-12-20 01:21:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:17,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:21:17,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:21:17,559 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 01:21:17,564 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 01:21:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:17,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:21:17,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:21:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:18,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:21:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:19,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912543710] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:21:19,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:21:19,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-20 01:21:19,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090749474] [2023-12-20 01:21:19,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:21:19,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 01:21:19,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:19,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 01:21:19,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2023-12-20 01:21:19,240 INFO L87 Difference]: Start difference. First operand 22677 states and 28768 transitions. Second operand has 29 states, 29 states have (on average 9.827586206896552) internal successors, (285), 28 states have internal predecessors, (285), 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 01:21:24,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:24,150 INFO L93 Difference]: Finished difference Result 116711 states and 147689 transitions. [2023-12-20 01:21:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 01:21:24,150 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.827586206896552) internal successors, (285), 28 states have internal predecessors, (285), 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 99 [2023-12-20 01:21:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:24,255 INFO L225 Difference]: With dead ends: 116711 [2023-12-20 01:21:24,255 INFO L226 Difference]: Without dead ends: 95870 [2023-12-20 01:21:24,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=791, Invalid=3765, Unknown=0, NotChecked=0, Total=4556 [2023-12-20 01:21:24,278 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1745 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:24,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 1717 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 01:21:24,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95870 states. [2023-12-20 01:21:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95870 to 90438. [2023-12-20 01:21:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90438 states, 90437 states have (on average 1.2439819985183056) internal successors, (112502), 90437 states have internal predecessors, (112502), 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 01:21:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90438 states to 90438 states and 112502 transitions. [2023-12-20 01:21:27,525 INFO L78 Accepts]: Start accepts. Automaton has 90438 states and 112502 transitions. Word has length 99 [2023-12-20 01:21:27,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:27,525 INFO L495 AbstractCegarLoop]: Abstraction has 90438 states and 112502 transitions. [2023-12-20 01:21:27,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.827586206896552) internal successors, (285), 28 states have internal predecessors, (285), 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 01:21:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 90438 states and 112502 transitions. [2023-12-20 01:21:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 01:21:27,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:27,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:27,540 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 01:21:27,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 01:21:27,734 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:27,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:27,734 INFO L85 PathProgramCache]: Analyzing trace with hash 725372845, now seen corresponding path program 1 times [2023-12-20 01:21:27,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:27,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344508468] [2023-12-20 01:21:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:27,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:28,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:28,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344508468] [2023-12-20 01:21:28,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344508468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:21:28,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987049008] [2023-12-20 01:21:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:28,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:21:28,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:21:28,409 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 01:21:28,410 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 01:21:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:28,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 01:21:28,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:21:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:29,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:21:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:30,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987049008] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:21:30,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:21:30,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 34 [2023-12-20 01:21:30,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13916300] [2023-12-20 01:21:30,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:21:30,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 01:21:30,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:30,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 01:21:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 01:21:30,368 INFO L87 Difference]: Start difference. First operand 90438 states and 112502 transitions. Second operand has 35 states, 35 states have (on average 8.257142857142858) internal successors, (289), 34 states have internal predecessors, (289), 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 01:21:37,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:37,168 INFO L93 Difference]: Finished difference Result 126699 states and 155412 transitions. [2023-12-20 01:21:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-20 01:21:37,169 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.257142857142858) internal successors, (289), 34 states have internal predecessors, (289), 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 101 [2023-12-20 01:21:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:37,262 INFO L225 Difference]: With dead ends: 126699 [2023-12-20 01:21:37,262 INFO L226 Difference]: Without dead ends: 80177 [2023-12-20 01:21:37,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1329, Invalid=5643, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 01:21:37,291 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 2412 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2412 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:37,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2412 Valid, 1969 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 01:21:37,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80177 states. [2023-12-20 01:21:39,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80177 to 60733. [2023-12-20 01:21:39,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60733 states, 60732 states have (on average 1.2396265560165975) internal successors, (75285), 60732 states have internal predecessors, (75285), 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 01:21:39,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60733 states to 60733 states and 75285 transitions. [2023-12-20 01:21:39,813 INFO L78 Accepts]: Start accepts. Automaton has 60733 states and 75285 transitions. Word has length 101 [2023-12-20 01:21:39,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:39,814 INFO L495 AbstractCegarLoop]: Abstraction has 60733 states and 75285 transitions. [2023-12-20 01:21:39,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.257142857142858) internal successors, (289), 34 states have internal predecessors, (289), 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 01:21:39,814 INFO L276 IsEmpty]: Start isEmpty. Operand 60733 states and 75285 transitions. [2023-12-20 01:21:39,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 01:21:39,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:39,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:39,826 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 01:21:40,020 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,SelfDestructingSolverStorable28 [2023-12-20 01:21:40,020 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:40,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:40,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1576622325, now seen corresponding path program 1 times [2023-12-20 01:21:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:40,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500237974] [2023-12-20 01:21:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:40,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:40,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:40,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500237974] [2023-12-20 01:21:40,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500237974] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:21:40,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337324394] [2023-12-20 01:21:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:21:40,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:21:40,666 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 01:21:40,667 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 01:21:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:40,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 01:21:40,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:21:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:41,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:21:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:42,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337324394] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:21:42,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:21:42,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2023-12-20 01:21:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919464288] [2023-12-20 01:21:42,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:21:42,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 01:21:42,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 01:21:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 01:21:42,681 INFO L87 Difference]: Start difference. First operand 60733 states and 75285 transitions. Second operand has 36 states, 36 states have (on average 7.638888888888889) internal successors, (275), 35 states have internal predecessors, (275), 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 01:21:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:21:49,908 INFO L93 Difference]: Finished difference Result 102477 states and 127586 transitions. [2023-12-20 01:21:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-20 01:21:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.638888888888889) internal successors, (275), 35 states have internal predecessors, (275), 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 101 [2023-12-20 01:21:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:21:49,979 INFO L225 Difference]: With dead ends: 102477 [2023-12-20 01:21:49,979 INFO L226 Difference]: Without dead ends: 74293 [2023-12-20 01:21:49,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1668, Invalid=8838, Unknown=0, NotChecked=0, Total=10506 [2023-12-20 01:21:49,991 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 2498 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:21:49,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2498 Valid, 3491 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 01:21:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74293 states. [2023-12-20 01:21:51,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74293 to 48849. [2023-12-20 01:21:51,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48849 states, 48848 states have (on average 1.2359154929577465) internal successors, (60372), 48848 states have internal predecessors, (60372), 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 01:21:51,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48849 states to 48849 states and 60372 transitions. [2023-12-20 01:21:51,995 INFO L78 Accepts]: Start accepts. Automaton has 48849 states and 60372 transitions. Word has length 101 [2023-12-20 01:21:51,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:21:51,995 INFO L495 AbstractCegarLoop]: Abstraction has 48849 states and 60372 transitions. [2023-12-20 01:21:51,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.638888888888889) internal successors, (275), 35 states have internal predecessors, (275), 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 01:21:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 48849 states and 60372 transitions. [2023-12-20 01:21:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 01:21:51,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:21:51,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:52,001 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 01:21:52,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:21:52,202 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:21:52,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:21:52,202 INFO L85 PathProgramCache]: Analyzing trace with hash 729730037, now seen corresponding path program 1 times [2023-12-20 01:21:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:21:52,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622263209] [2023-12-20 01:21:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:21:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:53,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:21:53,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622263209] [2023-12-20 01:21:53,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622263209] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:21:53,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995671778] [2023-12-20 01:21:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:21:53,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:21:53,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:21:53,280 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 01:21:53,281 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 01:21:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:21:53,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 01:21:53,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:21:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:54,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:21:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:21:55,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995671778] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:21:55,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:21:55,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 14] total 44 [2023-12-20 01:21:55,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551010884] [2023-12-20 01:21:55,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:21:55,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-20 01:21:55,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:21:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-20 01:21:55,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 01:21:55,223 INFO L87 Difference]: Start difference. First operand 48849 states and 60372 transitions. Second operand has 45 states, 45 states have (on average 6.133333333333334) internal successors, (276), 44 states have internal predecessors, (276), 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 01:22:04,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:22:04,752 INFO L93 Difference]: Finished difference Result 78342 states and 96369 transitions. [2023-12-20 01:22:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-20 01:22:04,753 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.133333333333334) internal successors, (276), 44 states have internal predecessors, (276), 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 101 [2023-12-20 01:22:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:22:04,813 INFO L225 Difference]: With dead ends: 78342 [2023-12-20 01:22:04,813 INFO L226 Difference]: Without dead ends: 54342 [2023-12-20 01:22:04,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5498 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3989, Invalid=15471, Unknown=0, NotChecked=0, Total=19460 [2023-12-20 01:22:04,833 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 2975 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:22:04,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2975 Valid, 1788 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 01:22:04,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54342 states. [2023-12-20 01:22:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54342 to 41029. [2023-12-20 01:22:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41029 states, 41028 states have (on average 1.235400214487667) internal successors, (50686), 41028 states have internal predecessors, (50686), 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 01:22:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41029 states to 41029 states and 50686 transitions. [2023-12-20 01:22:06,873 INFO L78 Accepts]: Start accepts. Automaton has 41029 states and 50686 transitions. Word has length 101 [2023-12-20 01:22:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:22:06,874 INFO L495 AbstractCegarLoop]: Abstraction has 41029 states and 50686 transitions. [2023-12-20 01:22:06,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.133333333333334) internal successors, (276), 44 states have internal predecessors, (276), 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 01:22:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 41029 states and 50686 transitions. [2023-12-20 01:22:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 01:22:06,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:22:06,875 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:06,881 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 01:22:07,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:22:07,085 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:22:07,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:22:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1241731287, now seen corresponding path program 1 times [2023-12-20 01:22:07,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:22:07,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220247206] [2023-12-20 01:22:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:22:07,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:22:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:22:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:07,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:22:07,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220247206] [2023-12-20 01:22:07,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220247206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:22:07,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458814941] [2023-12-20 01:22:07,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:22:07,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:22:07,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:22:07,553 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 01:22:07,554 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 01:22:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:22:07,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 01:22:07,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:22:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:08,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:22:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:09,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458814941] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:22:09,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:22:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2023-12-20 01:22:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165587803] [2023-12-20 01:22:09,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:22:09,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 01:22:09,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:22:09,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 01:22:09,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2023-12-20 01:22:09,147 INFO L87 Difference]: Start difference. First operand 41029 states and 50686 transitions. Second operand has 30 states, 30 states have (on average 8.233333333333333) internal successors, (247), 29 states have internal predecessors, (247), 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 01:22:15,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:22:15,500 INFO L93 Difference]: Finished difference Result 133993 states and 165813 transitions. [2023-12-20 01:22:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-20 01:22:15,501 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.233333333333333) internal successors, (247), 29 states have internal predecessors, (247), 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 01:22:15,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:22:15,631 INFO L225 Difference]: With dead ends: 133993 [2023-12-20 01:22:15,631 INFO L226 Difference]: Without dead ends: 116741 [2023-12-20 01:22:15,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=617, Invalid=2463, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 01:22:15,649 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 1603 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:22:15,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 1151 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 01:22:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116741 states. [2023-12-20 01:22:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116741 to 38307. [2023-12-20 01:22:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38307 states, 38306 states have (on average 1.2372735341721923) internal successors, (47395), 38306 states have internal predecessors, (47395), 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 01:22:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38307 states to 38307 states and 47395 transitions. [2023-12-20 01:22:18,009 INFO L78 Accepts]: Start accepts. Automaton has 38307 states and 47395 transitions. Word has length 103 [2023-12-20 01:22:18,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:22:18,010 INFO L495 AbstractCegarLoop]: Abstraction has 38307 states and 47395 transitions. [2023-12-20 01:22:18,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.233333333333333) internal successors, (247), 29 states have internal predecessors, (247), 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 01:22:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 38307 states and 47395 transitions. [2023-12-20 01:22:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-20 01:22:18,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:22:18,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 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 01:22:18,026 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 01:22:18,223 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,SelfDestructingSolverStorable31 [2023-12-20 01:22:18,224 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:22:18,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:22:18,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1780640137, now seen corresponding path program 1 times [2023-12-20 01:22:18,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:22:18,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851699014] [2023-12-20 01:22:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:22:18,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:22:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:22:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 28 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:22:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851699014] [2023-12-20 01:22:18,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851699014] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:22:18,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343088548] [2023-12-20 01:22:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:22:18,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:22:18,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:22:18,880 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 01:22:18,880 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 01:22:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:22:18,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:22:19,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:22:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 40 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:19,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:22:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 36 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:22,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343088548] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:22:22,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:22:22,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-20 01:22:22,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292258313] [2023-12-20 01:22:22,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:22:22,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:22:22,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:22:22,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:22:22,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:22:22,008 INFO L87 Difference]: Start difference. First operand 38307 states and 47395 transitions. Second operand has 32 states, 32 states have (on average 13.21875) internal successors, (423), 31 states have internal predecessors, (423), 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 01:22:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:22:27,366 INFO L93 Difference]: Finished difference Result 72461 states and 89828 transitions. [2023-12-20 01:22:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-20 01:22:27,366 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 13.21875) internal successors, (423), 31 states have internal predecessors, (423), 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 155 [2023-12-20 01:22:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:22:27,415 INFO L225 Difference]: With dead ends: 72461 [2023-12-20 01:22:27,415 INFO L226 Difference]: Without dead ends: 45671 [2023-12-20 01:22:27,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1959 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1730, Invalid=7012, Unknown=0, NotChecked=0, Total=8742 [2023-12-20 01:22:27,427 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 2186 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 01:22:27,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2186 Valid, 1567 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 01:22:27,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45671 states. [2023-12-20 01:22:29,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45671 to 38307. [2023-12-20 01:22:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38307 states, 38306 states have (on average 1.2246906489844933) internal successors, (46913), 38306 states have internal predecessors, (46913), 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 01:22:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38307 states to 38307 states and 46913 transitions. [2023-12-20 01:22:29,462 INFO L78 Accepts]: Start accepts. Automaton has 38307 states and 46913 transitions. Word has length 155 [2023-12-20 01:22:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:22:29,463 INFO L495 AbstractCegarLoop]: Abstraction has 38307 states and 46913 transitions. [2023-12-20 01:22:29,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 13.21875) internal successors, (423), 31 states have internal predecessors, (423), 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 01:22:29,463 INFO L276 IsEmpty]: Start isEmpty. Operand 38307 states and 46913 transitions. [2023-12-20 01:22:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-20 01:22:29,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:22:29,471 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:29,478 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 01:22:29,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:22:29,678 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:22:29,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:22:29,678 INFO L85 PathProgramCache]: Analyzing trace with hash 369587159, now seen corresponding path program 1 times [2023-12-20 01:22:29,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:22:29,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8727528] [2023-12-20 01:22:29,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:22:29,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:22:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:22:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:30,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:22:30,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8727528] [2023-12-20 01:22:30,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8727528] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:22:30,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486041193] [2023-12-20 01:22:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:22:30,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:22:30,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:22:30,318 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 01:22:30,318 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 01:22:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:22:30,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:22:30,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:22:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 49 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:30,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:22:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 47 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:33,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486041193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:22:33,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:22:33,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-20 01:22:33,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888515679] [2023-12-20 01:22:33,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:22:33,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:22:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:22:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:22:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:22:33,014 INFO L87 Difference]: Start difference. First operand 38307 states and 46913 transitions. Second operand has 32 states, 32 states have (on average 13.46875) internal successors, (431), 31 states have internal predecessors, (431), 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 01:22:40,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:22:40,493 INFO L93 Difference]: Finished difference Result 134915 states and 165958 transitions. [2023-12-20 01:22:40,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-20 01:22:40,494 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 13.46875) internal successors, (431), 31 states have internal predecessors, (431), 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 155 [2023-12-20 01:22:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:22:40,675 INFO L225 Difference]: With dead ends: 134915 [2023-12-20 01:22:40,675 INFO L226 Difference]: Without dead ends: 99967 [2023-12-20 01:22:40,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1758, Invalid=7748, Unknown=0, NotChecked=0, Total=9506 [2023-12-20 01:22:40,699 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1709 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 2226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:22:40,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 1904 Invalid, 2226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 01:22:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99967 states. [2023-12-20 01:22:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99967 to 79343. [2023-12-20 01:22:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79343 states, 79342 states have (on average 1.210317360288372) internal successors, (96029), 79342 states have internal predecessors, (96029), 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 01:22:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79343 states to 79343 states and 96029 transitions. [2023-12-20 01:22:45,266 INFO L78 Accepts]: Start accepts. Automaton has 79343 states and 96029 transitions. Word has length 155 [2023-12-20 01:22:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:22:45,266 INFO L495 AbstractCegarLoop]: Abstraction has 79343 states and 96029 transitions. [2023-12-20 01:22:45,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 13.46875) internal successors, (431), 31 states have internal predecessors, (431), 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 01:22:45,266 INFO L276 IsEmpty]: Start isEmpty. Operand 79343 states and 96029 transitions. [2023-12-20 01:22:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-20 01:22:45,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:22:45,285 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:45,290 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 01:22:45,490 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,SelfDestructingSolverStorable33 [2023-12-20 01:22:45,490 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:22:45,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:22:45,490 INFO L85 PathProgramCache]: Analyzing trace with hash -232895381, now seen corresponding path program 1 times [2023-12-20 01:22:45,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:22:45,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14439439] [2023-12-20 01:22:45,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:22:45,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:22:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:22:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 56 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:46,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:22:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14439439] [2023-12-20 01:22:46,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14439439] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:22:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102697688] [2023-12-20 01:22:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:22:46,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:22:46,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:22:46,276 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 01:22:46,289 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 01:22:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:22:46,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:22:46,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:22:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 42 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:47,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:22:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 40 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:22:48,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102697688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:22:48,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:22:48,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 34 [2023-12-20 01:22:48,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296729144] [2023-12-20 01:22:48,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:22:48,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 01:22:48,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:22:48,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 01:22:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 01:22:48,564 INFO L87 Difference]: Start difference. First operand 79343 states and 96029 transitions. Second operand has 35 states, 35 states have (on average 12.142857142857142) internal successors, (425), 34 states have internal predecessors, (425), 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 01:23:03,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:23:03,783 INFO L93 Difference]: Finished difference Result 184221 states and 222121 transitions. [2023-12-20 01:23:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-12-20 01:23:03,783 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 12.142857142857142) internal successors, (425), 34 states have internal predecessors, (425), 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 157 [2023-12-20 01:23:03,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:23:03,939 INFO L225 Difference]: With dead ends: 184221 [2023-12-20 01:23:03,939 INFO L226 Difference]: Without dead ends: 125427 [2023-12-20 01:23:03,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7398 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3705, Invalid=19857, Unknown=0, NotChecked=0, Total=23562 [2023-12-20 01:23:03,984 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 4006 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 3026 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4006 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 3119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:23:03,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4006 Valid, 2190 Invalid, 3119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3026 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 01:23:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125427 states. [2023-12-20 01:23:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125427 to 99119. [2023-12-20 01:23:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99119 states, 99118 states have (on average 1.2037874049113177) internal successors, (119317), 99118 states have internal predecessors, (119317), 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 01:23:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99119 states to 99119 states and 119317 transitions. [2023-12-20 01:23:10,364 INFO L78 Accepts]: Start accepts. Automaton has 99119 states and 119317 transitions. Word has length 157 [2023-12-20 01:23:10,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:23:10,364 INFO L495 AbstractCegarLoop]: Abstraction has 99119 states and 119317 transitions. [2023-12-20 01:23:10,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 12.142857142857142) internal successors, (425), 34 states have internal predecessors, (425), 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 01:23:10,364 INFO L276 IsEmpty]: Start isEmpty. Operand 99119 states and 119317 transitions. [2023-12-20 01:23:10,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-20 01:23:10,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:23:10,386 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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, 1] [2023-12-20 01:23:10,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-20 01:23:10,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 01:23:10,592 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:23:10,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:23:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash -892097761, now seen corresponding path program 1 times [2023-12-20 01:23:10,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:23:10,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820187948] [2023-12-20 01:23:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:23:10,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:23:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:23:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:23:11,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:23:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820187948] [2023-12-20 01:23:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820187948] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:23:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768111801] [2023-12-20 01:23:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:23:11,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:23:11,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:23:11,672 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 01:23:11,678 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 01:23:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:23:11,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 01:23:11,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:23:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 77 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:23:12,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:23:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 77 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:23:13,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768111801] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:23:13,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:23:13,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 39 [2023-12-20 01:23:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044049388] [2023-12-20 01:23:13,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:23:13,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 01:23:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:23:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 01:23:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:23:13,679 INFO L87 Difference]: Start difference. First operand 99119 states and 119317 transitions. Second operand has 39 states, 39 states have (on average 11.384615384615385) internal successors, (444), 39 states have internal predecessors, (444), 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 01:23:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:23:29,979 INFO L93 Difference]: Finished difference Result 246791 states and 295729 transitions. [2023-12-20 01:23:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-20 01:23:29,980 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 11.384615384615385) internal successors, (444), 39 states have internal predecessors, (444), 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 159 [2023-12-20 01:23:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:23:30,171 INFO L225 Difference]: With dead ends: 246791 [2023-12-20 01:23:30,171 INFO L226 Difference]: Without dead ends: 155605 [2023-12-20 01:23:30,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3018 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1757, Invalid=10233, Unknown=0, NotChecked=0, Total=11990 [2023-12-20 01:23:30,224 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2451 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 3254 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2451 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:23:30,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2451 Valid, 2781 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3254 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 01:23:30,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155605 states. [2023-12-20 01:23:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155605 to 64715. [2023-12-20 01:23:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64715 states, 64714 states have (on average 1.2012856568903174) internal successors, (77740), 64714 states have internal predecessors, (77740), 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 01:23:35,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64715 states to 64715 states and 77740 transitions. [2023-12-20 01:23:35,421 INFO L78 Accepts]: Start accepts. Automaton has 64715 states and 77740 transitions. Word has length 159 [2023-12-20 01:23:35,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:23:35,421 INFO L495 AbstractCegarLoop]: Abstraction has 64715 states and 77740 transitions. [2023-12-20 01:23:35,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.384615384615385) internal successors, (444), 39 states have internal predecessors, (444), 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 01:23:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 64715 states and 77740 transitions. [2023-12-20 01:23:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-20 01:23:35,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:23:35,428 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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 01:23:35,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 01:23:35,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-20 01:23:35,633 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:23:35,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:23:35,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1012496165, now seen corresponding path program 1 times [2023-12-20 01:23:35,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:23:35,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868698694] [2023-12-20 01:23:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:23:35,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:23:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:23:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 58 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:23:37,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:23:37,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868698694] [2023-12-20 01:23:37,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868698694] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:23:37,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191980368] [2023-12-20 01:23:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:23:37,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:23:37,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:23:37,162 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 01:23:37,163 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 01:23:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:23:37,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 01:23:37,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:23:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 58 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:23:38,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:23:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 58 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:23:41,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191980368] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:23:41,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:23:41,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 17] total 61 [2023-12-20 01:23:41,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296297427] [2023-12-20 01:23:41,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:23:41,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-20 01:23:41,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:23:41,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-20 01:23:41,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=3387, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 01:23:41,279 INFO L87 Difference]: Start difference. First operand 64715 states and 77740 transitions. Second operand has 61 states, 61 states have (on average 6.754098360655738) internal successors, (412), 61 states have internal predecessors, (412), 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 01:23:52,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-20 01:24:47,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:47,775 INFO L93 Difference]: Finished difference Result 305197 states and 364762 transitions. [2023-12-20 01:24:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2023-12-20 01:24:47,776 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 6.754098360655738) internal successors, (412), 61 states have internal predecessors, (412), 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 159 [2023-12-20 01:24:47,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:48,073 INFO L225 Difference]: With dead ends: 305197 [2023-12-20 01:24:48,073 INFO L226 Difference]: Without dead ends: 258075 [2023-12-20 01:24:48,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22969 ImplicationChecksByTransitivity, 41.2s TimeCoverageRelationStatistics Valid=9953, Invalid=60007, Unknown=0, NotChecked=0, Total=69960 [2023-12-20 01:24:48,124 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 6401 mSDsluCounter, 5008 mSDsCounter, 0 mSdLazyCounter, 6073 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6401 SdHoareTripleChecker+Valid, 5169 SdHoareTripleChecker+Invalid, 6366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 6073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:48,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6401 Valid, 5169 Invalid, 6366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 6073 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-20 01:24:48,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258075 states. [2023-12-20 01:25:03,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258075 to 188011. [2023-12-20 01:25:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188011 states, 188010 states have (on average 1.2001702037125686) internal successors, (225644), 188010 states have internal predecessors, (225644), 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 01:25:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188011 states to 188011 states and 225644 transitions. [2023-12-20 01:25:03,715 INFO L78 Accepts]: Start accepts. Automaton has 188011 states and 225644 transitions. Word has length 159 [2023-12-20 01:25:03,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:25:03,716 INFO L495 AbstractCegarLoop]: Abstraction has 188011 states and 225644 transitions. [2023-12-20 01:25:03,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 6.754098360655738) internal successors, (412), 61 states have internal predecessors, (412), 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 01:25:03,716 INFO L276 IsEmpty]: Start isEmpty. Operand 188011 states and 225644 transitions. [2023-12-20 01:25:03,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-20 01:25:03,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:25:03,728 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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 01:25:03,736 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 01:25:03,936 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,SelfDestructingSolverStorable36 [2023-12-20 01:25:03,936 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:25:03,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:25:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash -515952257, now seen corresponding path program 1 times [2023-12-20 01:25:03,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:25:03,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507830790] [2023-12-20 01:25:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:25:03,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:25:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:25:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 22 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:25:06,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:25:06,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507830790] [2023-12-20 01:25:06,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507830790] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:25:06,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379157229] [2023-12-20 01:25:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:25:06,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:25:06,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:25:06,639 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 01:25:06,641 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 01:25:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:25:06,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 01:25:06,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:25:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 31 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:25:08,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:25:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 31 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:25:12,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379157229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:25:12,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:25:12,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 19, 19] total 72 [2023-12-20 01:25:12,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76654480] [2023-12-20 01:25:12,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:25:12,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-20 01:25:12,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:25:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-20 01:25:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=4847, Unknown=0, NotChecked=0, Total=5112 [2023-12-20 01:25:12,225 INFO L87 Difference]: Start difference. First operand 188011 states and 225644 transitions. Second operand has 72 states, 72 states have (on average 6.236111111111111) internal successors, (449), 72 states have internal predecessors, (449), 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 01:30:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:30:26,777 INFO L93 Difference]: Finished difference Result 1074229 states and 1272035 transitions. [2023-12-20 01:30:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 485 states. [2023-12-20 01:30:26,777 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 6.236111111111111) internal successors, (449), 72 states have internal predecessors, (449), 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 159 [2023-12-20 01:30:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:30:28,896 INFO L225 Difference]: With dead ends: 1074229 [2023-12-20 01:30:28,896 INFO L226 Difference]: Without dead ends: 1021435 [2023-12-20 01:30:29,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 553 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132704 ImplicationChecksByTransitivity, 196.8s TimeCoverageRelationStatistics Valid=36089, Invalid=271381, Unknown=0, NotChecked=0, Total=307470 [2023-12-20 01:30:29,177 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 13981 mSDsluCounter, 6602 mSDsCounter, 0 mSdLazyCounter, 14018 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13981 SdHoareTripleChecker+Valid, 6774 SdHoareTripleChecker+Invalid, 14761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 14018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:30:29,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13981 Valid, 6774 Invalid, 14761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [743 Valid, 14018 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-12-20 01:30:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021435 states. [2023-12-20 01:31:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021435 to 235237. [2023-12-20 01:31:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235237 states, 235236 states have (on average 1.1959138907310105) internal successors, (281322), 235236 states have internal predecessors, (281322), 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 01:31:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235237 states to 235237 states and 281322 transitions. [2023-12-20 01:31:01,071 INFO L78 Accepts]: Start accepts. Automaton has 235237 states and 281322 transitions. Word has length 159 [2023-12-20 01:31:01,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:31:01,071 INFO L495 AbstractCegarLoop]: Abstraction has 235237 states and 281322 transitions. [2023-12-20 01:31:01,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 6.236111111111111) internal successors, (449), 72 states have internal predecessors, (449), 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 01:31:01,071 INFO L276 IsEmpty]: Start isEmpty. Operand 235237 states and 281322 transitions. [2023-12-20 01:31:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-20 01:31:01,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:31:01,089 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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 01:31:01,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-20 01:31:01,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:31:01,294 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:31:01,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:31:01,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1362844545, now seen corresponding path program 1 times [2023-12-20 01:31:01,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:31:01,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746346952] [2023-12-20 01:31:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:31:01,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:31:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:31:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 85 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 01:31:03,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:31:03,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746346952] [2023-12-20 01:31:03,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746346952] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:31:03,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290033064] [2023-12-20 01:31:03,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:31:03,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:31:03,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:31:03,943 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 01:31:03,944 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 01:31:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:31:04,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 01:31:04,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:31:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:31:06,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:31:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:31:09,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290033064] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:31:09,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:31:09,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 20, 21] total 71 [2023-12-20 01:31:09,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943788954] [2023-12-20 01:31:09,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:31:09,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-20 01:31:09,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:31:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-20 01:31:09,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=4679, Unknown=0, NotChecked=0, Total=4970 [2023-12-20 01:31:09,683 INFO L87 Difference]: Start difference. First operand 235237 states and 281322 transitions. Second operand has 71 states, 71 states have (on average 5.845070422535211) internal successors, (415), 71 states have internal predecessors, (415), 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 01:33:02,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:02,734 INFO L93 Difference]: Finished difference Result 656210 states and 784317 transitions. [2023-12-20 01:33:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2023-12-20 01:33:02,735 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.845070422535211) internal successors, (415), 71 states have internal predecessors, (415), 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 159 [2023-12-20 01:33:02,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:03,814 INFO L225 Difference]: With dead ends: 656210 [2023-12-20 01:33:03,814 INFO L226 Difference]: Without dead ends: 578863 [2023-12-20 01:33:03,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22756 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=8245, Invalid=66557, Unknown=0, NotChecked=0, Total=74802 [2023-12-20 01:33:03,942 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 6006 mSDsluCounter, 5990 mSDsCounter, 0 mSdLazyCounter, 12730 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6006 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 12959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 12730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:03,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6006 Valid, 6140 Invalid, 12959 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [229 Valid, 12730 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-20 01:33:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578863 states. [2023-12-20 01:33:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578863 to 391803. [2023-12-20 01:33:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391803 states, 391802 states have (on average 1.1938096283326782) internal successors, (467737), 391802 states have internal predecessors, (467737), 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 01:33:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391803 states to 391803 states and 467737 transitions. [2023-12-20 01:33:55,836 INFO L78 Accepts]: Start accepts. Automaton has 391803 states and 467737 transitions. Word has length 159 [2023-12-20 01:33:55,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:55,836 INFO L495 AbstractCegarLoop]: Abstraction has 391803 states and 467737 transitions. [2023-12-20 01:33:55,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 5.845070422535211) internal successors, (415), 71 states have internal predecessors, (415), 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 01:33:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 391803 states and 467737 transitions. [2023-12-20 01:33:55,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-20 01:33:55,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:55,872 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:55,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 01:33:56,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-20 01:33:56,080 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:56,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1862194960, now seen corresponding path program 1 times [2023-12-20 01:33:56,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:56,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978129072] [2023-12-20 01:33:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 22 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:56,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:56,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978129072] [2023-12-20 01:33:56,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978129072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:33:56,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871219493] [2023-12-20 01:33:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:56,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:33:56,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:33:56,877 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 01:33:56,886 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 01:33:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:57,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-20 01:33:57,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:34:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 22 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:34:00,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:34:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 22 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:34:06,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871219493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:34:06,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:34:06,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 25] total 66 [2023-12-20 01:34:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358064873] [2023-12-20 01:34:06,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:34:06,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-20 01:34:06,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:34:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-20 01:34:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=3847, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 01:34:06,269 INFO L87 Difference]: Start difference. First operand 391803 states and 467737 transitions. Second operand has 66 states, 66 states have (on average 6.924242424242424) internal successors, (457), 66 states have internal predecessors, (457), 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 01:34:24,552 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:34:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-20 01:34:24,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7072 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=3462, Invalid=20408, Unknown=0, NotChecked=0, Total=23870 [2023-12-20 01:34:24,555 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 3171 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 2931 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3171 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:34:24,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3171 Valid, 2435 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2931 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-20 01:34:24,556 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 01:34:24,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-20 01:34:24,566 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 01:34:24,757 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,SelfDestructingSolverStorable39 [2023-12-20 01:34:24,757 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (391803states) and FLOYD_HOARE automaton (currently 99 states, 66 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 155 known predicates. [2023-12-20 01:34:24,761 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] [2023-12-20 01:34:24,763 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 01:34:24,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:34:24 BoogieIcfgContainer [2023-12-20 01:34:24,764 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 01:34:24,764 INFO L158 Benchmark]: Toolchain (without parser) took 824419.97ms. Allocated memory was 318.8MB in the beginning and 7.0GB in the end (delta: 6.7GB). Free memory was 264.3MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2023-12-20 01:34:24,765 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 206.6MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 01:34:24,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.75ms. Allocated memory is still 318.8MB. Free memory was 263.8MB in the beginning and 247.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-20 01:34:24,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.66ms. Allocated memory is still 318.8MB. Free memory was 247.4MB in the beginning and 244.4MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 01:34:24,768 INFO L158 Benchmark]: Boogie Preprocessor took 31.28ms. Allocated memory is still 318.8MB. Free memory was 244.4MB in the beginning and 241.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 01:34:24,768 INFO L158 Benchmark]: RCFGBuilder took 686.64ms. Allocated memory is still 318.8MB. Free memory was 241.2MB in the beginning and 276.9MB in the end (delta: -35.7MB). Peak memory consumption was 31.9MB. Max. memory is 8.0GB. [2023-12-20 01:34:24,768 INFO L158 Benchmark]: TraceAbstraction took 823385.78ms. Allocated memory was 318.8MB in the beginning and 7.0GB in the end (delta: 6.7GB). Free memory was 276.4MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2023-12-20 01:34:24,768 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 206.6MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 273.75ms. Allocated memory is still 318.8MB. Free memory was 263.8MB in the beginning and 247.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.66ms. Allocated memory is still 318.8MB. Free memory was 247.4MB in the beginning and 244.4MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.28ms. Allocated memory is still 318.8MB. Free memory was 244.4MB in the beginning and 241.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 686.64ms. Allocated memory is still 318.8MB. Free memory was 241.2MB in the beginning and 276.9MB in the end (delta: -35.7MB). Peak memory consumption was 31.9MB. Max. memory is 8.0GB. * TraceAbstraction took 823385.78ms. Allocated memory was 318.8MB in the beginning and 7.0GB in the end (delta: 6.7GB). Free memory was 276.4MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 3.5GB. 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: 504]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 504). Cancelled while NwaCegarLoop was constructing difference of abstraction (391803states) and FLOYD_HOARE automaton (currently 99 states, 66 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 155 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 823.3s, OverallIterations: 40, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 614.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63512 SdHoareTripleChecker+Valid, 46.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63512 mSDsluCounter, 55670 SdHoareTripleChecker+Invalid, 41.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49988 mSDsCounter, 2095 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60558 IncrementalHoareTripleChecker+Invalid, 62653 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2095 mSolverCounterUnsat, 5682 mSDtfsCounter, 60558 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6207 GetRequests, 3796 SyntacticMatches, 2 SemanticMatches, 2408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213743 ImplicationChecksByTransitivity, 341.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=391803occurred in iteration=39, InterpolantAutomatonStates: 1755, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 139.1s AutomataMinimizationTime, 39 MinimizatonAttempts, 1481000 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 62.6s InterpolantComputationTime, 5848 NumberOfCodeBlocks, 5848 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 7834 ConstructedInterpolants, 0 QuantifiedInterpolants, 149321 SizeOfPredicates, 133 NumberOfNonLiveVariables, 8327 ConjunctsInSsa, 355 ConjunctsInUnsatCore, 72 InterpolantComputations, 24 PerfectInterpolantSequences, 1456/3615 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