/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.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:06:47,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:06:47,866 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 01:06:47,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:06:47,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:06:47,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:06:47,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:06:47,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:06:47,895 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:06:47,898 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:06:47,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:06:47,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:06:47,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:06:47,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:06:47,900 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:06:47,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:06:47,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:06:47,900 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:06:47,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:06:47,902 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:06:47,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:06:47,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:06:47,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:06:47,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:06:47,903 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:06:47,903 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:06:47,903 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:06:47,903 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:06:47,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:06:47,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:06:47,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:06:47,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:06:47,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:06:47,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:06:47,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:06:47,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:06:47,905 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:06:47,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:06:47,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:06:47,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:06:47,905 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:06:47,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:06:47,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:06:47,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:06:48,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:06:48,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:06:48,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:06:48,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:06:48,118 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:06:48,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2023-12-20 01:06:49,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:06:49,361 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:06:49,362 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2023-12-20 01:06:49,367 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222d6bb06/d80ad6db37484aed9cd59e6c3b49b75e/FLAG8889eebd5 [2023-12-20 01:06:49,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222d6bb06/d80ad6db37484aed9cd59e6c3b49b75e [2023-12-20 01:06:49,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:06:49,783 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:06:49,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:06:49,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:06:49,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:06:49,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:49,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2932cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49, skipping insertion in model container [2023-12-20 01:06:49,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:49,821 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:06:49,942 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.3.ufo.BOUNDED-6.pals.c[5947,5960] [2023-12-20 01:06:49,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:06:49,952 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:06:49,984 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.3.ufo.BOUNDED-6.pals.c[5947,5960] [2023-12-20 01:06:49,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:06:49,995 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:06:49,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49 WrapperNode [2023-12-20 01:06:49,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:06:49,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:06:49,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:06:49,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:06:50,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,037 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 219 [2023-12-20 01:06:50,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:06:50,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:06:50,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:06:50,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:06:50,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,065 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 01:06:50,066 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:06:50,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:06:50,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:06:50,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:06:50,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (1/1) ... [2023-12-20 01:06:50,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:06:50,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:50,120 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 01:06:50,150 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 01:06:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:06:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:06:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:06:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:06:50,235 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:06:50,236 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:06:50,492 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:06:50,513 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:06:50,513 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:06:50,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:06:50 BoogieIcfgContainer [2023-12-20 01:06:50,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:06:50,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:06:50,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:06:50,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:06:50,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:06:49" (1/3) ... [2023-12-20 01:06:50,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762e793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:06:50, skipping insertion in model container [2023-12-20 01:06:50,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:06:49" (2/3) ... [2023-12-20 01:06:50,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762e793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:06:50, skipping insertion in model container [2023-12-20 01:06:50,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:06:50" (3/3) ... [2023-12-20 01:06:50,519 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c [2023-12-20 01:06:50,531 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:06:50,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:06:50,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:06:50,576 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;@5b61f23a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:06:50,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:06:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 50 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 01:06:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 01:06:50,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:50,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:50,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:50,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:50,602 INFO L85 PathProgramCache]: Analyzing trace with hash -417268953, now seen corresponding path program 1 times [2023-12-20 01:06:50,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:50,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740296031] [2023-12-20 01:06:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:50,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:50,781 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 01:06:50,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:50,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740296031] [2023-12-20 01:06:50,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740296031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:50,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:50,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:06:50,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782882421] [2023-12-20 01:06:50,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:50,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:06:50,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:06:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:06:50,812 INFO L87 Difference]: Start difference. First operand has 51 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 50 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) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:50,848 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2023-12-20 01:06:50,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:06:50,853 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-20 01:06:50,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:50,861 INFO L225 Difference]: With dead ends: 83 [2023-12-20 01:06:50,861 INFO L226 Difference]: Without dead ends: 49 [2023-12-20 01:06:50,863 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 01:06:50,868 INFO L413 NwaCegarLoop]: 80 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, 80 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 01:06:50,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-20 01:06:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-20 01:06:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 48 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 01:06:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 82 transitions. [2023-12-20 01:06:50,903 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 82 transitions. Word has length 16 [2023-12-20 01:06:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:50,903 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 82 transitions. [2023-12-20 01:06:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:50,904 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 82 transitions. [2023-12-20 01:06:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 01:06:50,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:50,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:50,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:06:50,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:50,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1004074967, now seen corresponding path program 1 times [2023-12-20 01:06:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:50,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466490370] [2023-12-20 01:06:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:51,084 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 01:06:51,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:51,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466490370] [2023-12-20 01:06:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466490370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:51,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:51,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:06:51,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442159448] [2023-12-20 01:06:51,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:51,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:06:51,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:06:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:06:51,093 INFO L87 Difference]: Start difference. First operand 49 states and 82 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:51,142 INFO L93 Difference]: Finished difference Result 110 states and 177 transitions. [2023-12-20 01:06:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:06:51,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-20 01:06:51,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:51,143 INFO L225 Difference]: With dead ends: 110 [2023-12-20 01:06:51,143 INFO L226 Difference]: Without dead ends: 78 [2023-12-20 01:06:51,144 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 01:06:51,145 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 45 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:51,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 212 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-20 01:06:51,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 49. [2023-12-20 01:06:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2023-12-20 01:06:51,152 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 16 [2023-12-20 01:06:51,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:51,152 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2023-12-20 01:06:51,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2023-12-20 01:06:51,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-20 01:06:51,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:51,154 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] [2023-12-20 01:06:51,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:06:51,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:51,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:51,155 INFO L85 PathProgramCache]: Analyzing trace with hash 871528204, now seen corresponding path program 1 times [2023-12-20 01:06:51,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:51,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021466578] [2023-12-20 01:06:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:51,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:51,238 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 01:06:51,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:51,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021466578] [2023-12-20 01:06:51,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021466578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:51,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:51,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:06:51,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136148414] [2023-12-20 01:06:51,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:51,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:06:51,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:51,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:06:51,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:06:51,242 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:51,350 INFO L93 Difference]: Finished difference Result 223 states and 342 transitions. [2023-12-20 01:06:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:06:51,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-20 01:06:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:51,356 INFO L225 Difference]: With dead ends: 223 [2023-12-20 01:06:51,356 INFO L226 Difference]: Without dead ends: 194 [2023-12-20 01:06:51,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:06:51,358 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 264 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:51,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 402 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:06:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-20 01:06:51,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 76. [2023-12-20 01:06:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 75 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 109 transitions. [2023-12-20 01:06:51,366 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 109 transitions. Word has length 31 [2023-12-20 01:06:51,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:51,366 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 109 transitions. [2023-12-20 01:06:51,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,366 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 109 transitions. [2023-12-20 01:06:51,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-20 01:06:51,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:51,367 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] [2023-12-20 01:06:51,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:06:51,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:51,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash -739726020, now seen corresponding path program 1 times [2023-12-20 01:06:51,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:51,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852062048] [2023-12-20 01:06:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:51,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:51,406 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 01:06:51,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:51,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852062048] [2023-12-20 01:06:51,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852062048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:51,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:51,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:51,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932538300] [2023-12-20 01:06:51,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:51,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:51,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:51,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:51,407 INFO L87 Difference]: Start difference. First operand 76 states and 109 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:51,423 INFO L93 Difference]: Finished difference Result 177 states and 268 transitions. [2023-12-20 01:06:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:51,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-20 01:06:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:51,424 INFO L225 Difference]: With dead ends: 177 [2023-12-20 01:06:51,424 INFO L226 Difference]: Without dead ends: 121 [2023-12-20 01:06:51,425 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 01:06:51,429 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 26 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 101 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 01:06:51,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 101 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:51,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-20 01:06:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-12-20 01:06:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4830508474576272) internal successors, (175), 118 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 175 transitions. [2023-12-20 01:06:51,441 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 175 transitions. Word has length 33 [2023-12-20 01:06:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:51,441 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 175 transitions. [2023-12-20 01:06:51,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 175 transitions. [2023-12-20 01:06:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-20 01:06:51,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:51,442 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] [2023-12-20 01:06:51,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:06:51,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:51,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash -737581068, now seen corresponding path program 1 times [2023-12-20 01:06:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:51,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987690822] [2023-12-20 01:06:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:51,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:51,610 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 01:06:51,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:51,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987690822] [2023-12-20 01:06:51,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987690822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:51,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:51,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:06:51,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561330627] [2023-12-20 01:06:51,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:51,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:06:51,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:06:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:06:51,614 INFO L87 Difference]: Start difference. First operand 119 states and 175 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:51,678 INFO L93 Difference]: Finished difference Result 220 states and 331 transitions. [2023-12-20 01:06:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:06:51,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-20 01:06:51,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:51,679 INFO L225 Difference]: With dead ends: 220 [2023-12-20 01:06:51,679 INFO L226 Difference]: Without dead ends: 121 [2023-12-20 01:06:51,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:06:51,681 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 97 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:51,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 140 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:51,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-20 01:06:51,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-12-20 01:06:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4661016949152543) internal successors, (173), 118 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 173 transitions. [2023-12-20 01:06:51,694 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 173 transitions. Word has length 33 [2023-12-20 01:06:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:51,695 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 173 transitions. [2023-12-20 01:06:51,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 173 transitions. [2023-12-20 01:06:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 01:06:51,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:51,696 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] [2023-12-20 01:06:51,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:06:51,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:51,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1404220512, now seen corresponding path program 1 times [2023-12-20 01:06:51,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:51,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922405175] [2023-12-20 01:06:51,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:51,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:51,829 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 01:06:51,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:51,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922405175] [2023-12-20 01:06:51,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922405175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:51,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:51,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:06:51,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194112569] [2023-12-20 01:06:51,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:51,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:06:51,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:51,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:06:51,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:06:51,831 INFO L87 Difference]: Start difference. First operand 119 states and 173 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:51,857 INFO L93 Difference]: Finished difference Result 127 states and 182 transitions. [2023-12-20 01:06:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:06:51,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 01:06:51,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:51,859 INFO L225 Difference]: With dead ends: 127 [2023-12-20 01:06:51,860 INFO L226 Difference]: Without dead ends: 125 [2023-12-20 01:06:51,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:06:51,861 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:51,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 293 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-20 01:06:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2023-12-20 01:06:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4426229508196722) internal successors, (176), 122 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 176 transitions. [2023-12-20 01:06:51,877 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 176 transitions. Word has length 34 [2023-12-20 01:06:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:51,877 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 176 transitions. [2023-12-20 01:06:51,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 176 transitions. [2023-12-20 01:06:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 01:06:51,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:51,881 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] [2023-12-20 01:06:51,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:06:51,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:51,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1768252524, now seen corresponding path program 1 times [2023-12-20 01:06:51,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057625719] [2023-12-20 01:06:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:51,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:51,920 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 01:06:51,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:51,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057625719] [2023-12-20 01:06:51,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057625719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:51,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:51,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:51,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554201642] [2023-12-20 01:06:51,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:51,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:51,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:51,921 INFO L87 Difference]: Start difference. First operand 123 states and 176 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:51,934 INFO L93 Difference]: Finished difference Result 237 states and 349 transitions. [2023-12-20 01:06:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:51,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-20 01:06:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:51,935 INFO L225 Difference]: With dead ends: 237 [2023-12-20 01:06:51,935 INFO L226 Difference]: Without dead ends: 177 [2023-12-20 01:06:51,937 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 01:06:51,938 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 36 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 139 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 01:06:51,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 139 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:51,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-20 01:06:51,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2023-12-20 01:06:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.4540229885057472) internal successors, (253), 174 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 253 transitions. [2023-12-20 01:06:51,947 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 253 transitions. Word has length 35 [2023-12-20 01:06:51,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:51,947 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 253 transitions. [2023-12-20 01:06:51,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,947 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 253 transitions. [2023-12-20 01:06:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 01:06:51,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:51,949 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] [2023-12-20 01:06:51,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:06:51,949 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:51,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:51,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1901058708, now seen corresponding path program 1 times [2023-12-20 01:06:51,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:51,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061024480] [2023-12-20 01:06:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:51,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:51,981 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 01:06:51,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:51,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061024480] [2023-12-20 01:06:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061024480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:51,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:51,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:51,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902133666] [2023-12-20 01:06:51,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:51,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:51,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:51,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:51,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:51,983 INFO L87 Difference]: Start difference. First operand 175 states and 253 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:51,999 INFO L93 Difference]: Finished difference Result 457 states and 673 transitions. [2023-12-20 01:06:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:51,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-20 01:06:51,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:52,000 INFO L225 Difference]: With dead ends: 457 [2023-12-20 01:06:52,000 INFO L226 Difference]: Without dead ends: 304 [2023-12-20 01:06:52,002 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 01:06:52,003 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 34 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 145 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 01:06:52,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-20 01:06:52,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2023-12-20 01:06:52,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.4451827242524917) internal successors, (435), 301 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 435 transitions. [2023-12-20 01:06:52,013 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 435 transitions. Word has length 35 [2023-12-20 01:06:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:52,013 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 435 transitions. [2023-12-20 01:06:52,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,013 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 435 transitions. [2023-12-20 01:06:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 01:06:52,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:52,013 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] [2023-12-20 01:06:52,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:06:52,014 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:52,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:52,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1505175148, now seen corresponding path program 1 times [2023-12-20 01:06:52,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:52,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942942975] [2023-12-20 01:06:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:52,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:52,039 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 01:06:52,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942942975] [2023-12-20 01:06:52,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942942975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:52,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:52,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:52,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387304868] [2023-12-20 01:06:52,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:52,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:52,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:52,041 INFO L87 Difference]: Start difference. First operand 302 states and 435 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:52,059 INFO L93 Difference]: Finished difference Result 814 states and 1177 transitions. [2023-12-20 01:06:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:52,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-20 01:06:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:52,061 INFO L225 Difference]: With dead ends: 814 [2023-12-20 01:06:52,061 INFO L226 Difference]: Without dead ends: 534 [2023-12-20 01:06:52,062 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 01:06:52,062 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 32 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 147 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 01:06:52,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 147 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:52,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-12-20 01:06:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2023-12-20 01:06:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 1.4143126177024483) internal successors, (751), 531 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 751 transitions. [2023-12-20 01:06:52,076 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 751 transitions. Word has length 35 [2023-12-20 01:06:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:52,076 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 751 transitions. [2023-12-20 01:06:52,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 751 transitions. [2023-12-20 01:06:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:06:52,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:52,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:52,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:06:52,077 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:52,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash -217205247, now seen corresponding path program 1 times [2023-12-20 01:06:52,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:52,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311581150] [2023-12-20 01:06:52,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:52,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:06:52,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:52,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311581150] [2023-12-20 01:06:52,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311581150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:52,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:52,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:06:52,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358563189] [2023-12-20 01:06:52,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:52,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:06:52,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:52,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:06:52,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:06:52,142 INFO L87 Difference]: Start difference. First operand 532 states and 751 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:52,236 INFO L93 Difference]: Finished difference Result 2040 states and 2903 transitions. [2023-12-20 01:06:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:06:52,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 49 [2023-12-20 01:06:52,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:52,241 INFO L225 Difference]: With dead ends: 2040 [2023-12-20 01:06:52,241 INFO L226 Difference]: Without dead ends: 1670 [2023-12-20 01:06:52,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:06:52,242 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 155 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:52,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 276 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2023-12-20 01:06:52,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 972. [2023-12-20 01:06:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.411946446961895) internal successors, (1371), 971 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1371 transitions. [2023-12-20 01:06:52,275 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1371 transitions. Word has length 49 [2023-12-20 01:06:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:52,276 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1371 transitions. [2023-12-20 01:06:52,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1371 transitions. [2023-12-20 01:06:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:06:52,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:52,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:52,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:06:52,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:52,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:52,278 INFO L85 PathProgramCache]: Analyzing trace with hash -842861311, now seen corresponding path program 1 times [2023-12-20 01:06:52,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:52,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667747159] [2023-12-20 01:06:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:52,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 01:06:52,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:52,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667747159] [2023-12-20 01:06:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667747159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:52,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:06:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495436684] [2023-12-20 01:06:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:52,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:06:52,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:52,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:06:52,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:06:52,366 INFO L87 Difference]: Start difference. First operand 972 states and 1371 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:52,445 INFO L93 Difference]: Finished difference Result 2548 states and 3623 transitions. [2023-12-20 01:06:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:06:52,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 49 [2023-12-20 01:06:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:52,450 INFO L225 Difference]: With dead ends: 2548 [2023-12-20 01:06:52,450 INFO L226 Difference]: Without dead ends: 2038 [2023-12-20 01:06:52,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:06:52,451 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 157 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:52,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 263 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2023-12-20 01:06:52,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1664. [2023-12-20 01:06:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1663 states have (on average 1.4088995790739627) internal successors, (2343), 1663 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2343 transitions. [2023-12-20 01:06:52,498 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2343 transitions. Word has length 49 [2023-12-20 01:06:52,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:52,499 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2343 transitions. [2023-12-20 01:06:52,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2343 transitions. [2023-12-20 01:06:52,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:06:52,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:52,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:52,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:06:52,501 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:52,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash 45872129, now seen corresponding path program 1 times [2023-12-20 01:06:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142532789] [2023-12-20 01:06:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:52,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:06:52,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:52,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142532789] [2023-12-20 01:06:52,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142532789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:52,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:52,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:06:52,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54936794] [2023-12-20 01:06:52,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:52,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:06:52,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:52,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:06:52,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:06:52,588 INFO L87 Difference]: Start difference. First operand 1664 states and 2343 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:52,710 INFO L93 Difference]: Finished difference Result 3056 states and 4339 transitions. [2023-12-20 01:06:52,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:06:52,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 49 [2023-12-20 01:06:52,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:52,717 INFO L225 Difference]: With dead ends: 3056 [2023-12-20 01:06:52,717 INFO L226 Difference]: Without dead ends: 2546 [2023-12-20 01:06:52,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:06:52,718 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 165 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:52,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 257 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2023-12-20 01:06:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2172. [2023-12-20 01:06:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2171 states have (on average 1.4090280976508522) internal successors, (3059), 2171 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3059 transitions. [2023-12-20 01:06:52,791 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3059 transitions. Word has length 49 [2023-12-20 01:06:52,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:52,791 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 3059 transitions. [2023-12-20 01:06:52,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3059 transitions. [2023-12-20 01:06:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 01:06:52,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:52,792 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] [2023-12-20 01:06:52,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:06:52,792 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:52,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1885157086, now seen corresponding path program 1 times [2023-12-20 01:06:52,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:52,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051534461] [2023-12-20 01:06:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:52,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:52,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:52,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051534461] [2023-12-20 01:06:52,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051534461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:52,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:52,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:52,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380355217] [2023-12-20 01:06:52,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:52,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:52,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:52,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:52,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:52,854 INFO L87 Difference]: Start difference. First operand 2172 states and 3059 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:52,904 INFO L93 Difference]: Finished difference Result 4324 states and 6097 transitions. [2023-12-20 01:06:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:52,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-20 01:06:52,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:52,910 INFO L225 Difference]: With dead ends: 4324 [2023-12-20 01:06:52,910 INFO L226 Difference]: Without dead ends: 2174 [2023-12-20 01:06:52,914 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 01:06:52,915 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 29 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 134 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 01:06:52,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 134 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2023-12-20 01:06:52,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2172. [2023-12-20 01:06:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2171 states have (on average 1.3859972362966375) internal successors, (3009), 2171 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3009 transitions. [2023-12-20 01:06:52,985 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3009 transitions. Word has length 50 [2023-12-20 01:06:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:52,985 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 3009 transitions. [2023-12-20 01:06:52,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3009 transitions. [2023-12-20 01:06:52,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 01:06:52,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:52,986 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] [2023-12-20 01:06:52,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:06:52,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:52,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1001536681, now seen corresponding path program 1 times [2023-12-20 01:06:52,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:52,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641262049] [2023-12-20 01:06:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:52,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:53,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:53,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641262049] [2023-12-20 01:06:53,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641262049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:53,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:53,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:53,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562270284] [2023-12-20 01:06:53,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:53,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:53,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:53,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:53,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:53,045 INFO L87 Difference]: Start difference. First operand 2172 states and 3009 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:53,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:53,075 INFO L93 Difference]: Finished difference Result 3018 states and 4196 transitions. [2023-12-20 01:06:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:53,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-20 01:06:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:53,078 INFO L225 Difference]: With dead ends: 3018 [2023-12-20 01:06:53,078 INFO L226 Difference]: Without dead ends: 868 [2023-12-20 01:06:53,080 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 01:06:53,080 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 23 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 131 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 01:06:53,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 131 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-12-20 01:06:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 861. [2023-12-20 01:06:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 1.3767441860465117) internal successors, (1184), 860 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1184 transitions. [2023-12-20 01:06:53,117 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1184 transitions. Word has length 51 [2023-12-20 01:06:53,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:53,118 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1184 transitions. [2023-12-20 01:06:53,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1184 transitions. [2023-12-20 01:06:53,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 01:06:53,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:53,118 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:53,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:06:53,118 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:53,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:53,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1455204816, now seen corresponding path program 1 times [2023-12-20 01:06:53,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:53,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077636198] [2023-12-20 01:06:53,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:53,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:53,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077636198] [2023-12-20 01:06:53,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077636198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:53,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:53,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944611663] [2023-12-20 01:06:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:53,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:53,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:53,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:53,177 INFO L87 Difference]: Start difference. First operand 861 states and 1184 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:53,195 INFO L93 Difference]: Finished difference Result 1279 states and 1762 transitions. [2023-12-20 01:06:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-20 01:06:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:53,197 INFO L225 Difference]: With dead ends: 1279 [2023-12-20 01:06:53,197 INFO L226 Difference]: Without dead ends: 449 [2023-12-20 01:06:53,200 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 01:06:53,200 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 25 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 110 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 01:06:53,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 110 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-20 01:06:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2023-12-20 01:06:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.34304932735426) internal successors, (599), 446 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 599 transitions. [2023-12-20 01:06:53,214 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 599 transitions. Word has length 52 [2023-12-20 01:06:53,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:53,214 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 599 transitions. [2023-12-20 01:06:53,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 599 transitions. [2023-12-20 01:06:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 01:06:53,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:53,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:53,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:06:53,215 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:53,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash 923352062, now seen corresponding path program 1 times [2023-12-20 01:06:53,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:53,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919732911] [2023-12-20 01:06:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:53,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:54,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:54,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919732911] [2023-12-20 01:06:54,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919732911] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:06:54,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943839173] [2023-12-20 01:06:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:54,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:54,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:54,266 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 01:06:54,316 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 01:06:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:54,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:06:54,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:06:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:54,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:06:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:54,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943839173] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:06:54,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:06:54,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 20 [2023-12-20 01:06:54,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398930712] [2023-12-20 01:06:54,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:06:54,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 01:06:54,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:54,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 01:06:54,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-20 01:06:54,896 INFO L87 Difference]: Start difference. First operand 447 states and 599 transitions. Second operand has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:57,380 INFO L93 Difference]: Finished difference Result 3678 states and 4840 transitions. [2023-12-20 01:06:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-20 01:06:57,381 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 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 54 [2023-12-20 01:06:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:57,388 INFO L225 Difference]: With dead ends: 3678 [2023-12-20 01:06:57,388 INFO L226 Difference]: Without dead ends: 3208 [2023-12-20 01:06:57,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2031 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=986, Invalid=5334, Unknown=0, NotChecked=0, Total=6320 [2023-12-20 01:06:57,391 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 1524 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:57,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 470 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 01:06:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2023-12-20 01:06:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 2726. [2023-12-20 01:06:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2726 states, 2725 states have (on average 1.299816513761468) internal successors, (3542), 2725 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3542 transitions. [2023-12-20 01:06:57,481 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3542 transitions. Word has length 54 [2023-12-20 01:06:57,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:57,481 INFO L495 AbstractCegarLoop]: Abstraction has 2726 states and 3542 transitions. [2023-12-20 01:06:57,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3542 transitions. [2023-12-20 01:06:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 01:06:57,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:57,482 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:06:57,502 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 01:06:57,687 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,SelfDestructingSolverStorable15 [2023-12-20 01:06:57,687 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:57,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:57,688 INFO L85 PathProgramCache]: Analyzing trace with hash -25697971, now seen corresponding path program 1 times [2023-12-20 01:06:57,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:57,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483380944] [2023-12-20 01:06:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:57,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:57,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:57,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483380944] [2023-12-20 01:06:57,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483380944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:06:57,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458706478] [2023-12-20 01:06:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:57,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:57,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:57,984 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 01:06:58,033 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 01:06:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:58,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:06:58,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:06:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:58,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:06:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:59,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458706478] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:06:59,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:06:59,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-20 01:06:59,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600563387] [2023-12-20 01:06:59,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:06:59,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 01:06:59,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:59,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 01:06:59,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2023-12-20 01:06:59,223 INFO L87 Difference]: Start difference. First operand 2726 states and 3542 transitions. Second operand has 29 states, 29 states have (on average 5.137931034482759) internal successors, (149), 28 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:00,924 INFO L93 Difference]: Finished difference Result 10327 states and 13344 transitions. [2023-12-20 01:07:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 01:07:00,925 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.137931034482759) internal successors, (149), 28 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 01:07:00,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:00,980 INFO L225 Difference]: With dead ends: 10327 [2023-12-20 01:07:00,980 INFO L226 Difference]: Without dead ends: 7798 [2023-12-20 01:07:00,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=690, Invalid=2732, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 01:07:00,983 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1000 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:00,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 550 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:07:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7798 states. [2023-12-20 01:07:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7798 to 7130. [2023-12-20 01:07:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 7129 states have (on average 1.280123439472577) internal successors, (9126), 7129 states have internal predecessors, (9126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 9126 transitions. [2023-12-20 01:07:01,212 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 9126 transitions. Word has length 55 [2023-12-20 01:07:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:01,213 INFO L495 AbstractCegarLoop]: Abstraction has 7130 states and 9126 transitions. [2023-12-20 01:07:01,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.137931034482759) internal successors, (149), 28 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 9126 transitions. [2023-12-20 01:07:01,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 01:07:01,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:01,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:01,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 01:07:01,420 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,SelfDestructingSolverStorable16 [2023-12-20 01:07:01,420 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:01,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1777255835, now seen corresponding path program 1 times [2023-12-20 01:07:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328096360] [2023-12-20 01:07:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:01,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:01,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328096360] [2023-12-20 01:07:01,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328096360] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:07:01,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038464248] [2023-12-20 01:07:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:01,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:01,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:07:01,613 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 01:07:01,628 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 01:07:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:01,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:07:01,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:07:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:02,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:07:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:02,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038464248] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:07:02,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:07:02,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-12-20 01:07:02,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602921746] [2023-12-20 01:07:02,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:07:02,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 01:07:02,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:02,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 01:07:02,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-12-20 01:07:02,572 INFO L87 Difference]: Start difference. First operand 7130 states and 9126 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:03,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:07:03,192 INFO L93 Difference]: Finished difference Result 14322 states and 18316 transitions. [2023-12-20 01:07:03,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 01:07:03,193 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 01:07:03,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:07:03,211 INFO L225 Difference]: With dead ends: 14322 [2023-12-20 01:07:03,211 INFO L226 Difference]: Without dead ends: 7872 [2023-12-20 01:07:03,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=363, Invalid=1277, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 01:07:03,218 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 640 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:07:03,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 387 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 01:07:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7872 states. [2023-12-20 01:07:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7872 to 7314. [2023-12-20 01:07:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7314 states, 7313 states have (on average 1.2622726651169152) internal successors, (9231), 7313 states have internal predecessors, (9231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:03,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7314 states to 7314 states and 9231 transitions. [2023-12-20 01:07:03,432 INFO L78 Accepts]: Start accepts. Automaton has 7314 states and 9231 transitions. Word has length 55 [2023-12-20 01:07:03,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:03,432 INFO L495 AbstractCegarLoop]: Abstraction has 7314 states and 9231 transitions. [2023-12-20 01:07:03,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:03,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7314 states and 9231 transitions. [2023-12-20 01:07:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 01:07:03,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:03,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:07:03,440 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 01:07:03,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 01:07:03,640 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:03,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:03,641 INFO L85 PathProgramCache]: Analyzing trace with hash -769882752, now seen corresponding path program 1 times [2023-12-20 01:07:03,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:03,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000325069] [2023-12-20 01:07:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:03,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:04,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:04,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000325069] [2023-12-20 01:07:04,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000325069] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:07:04,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71553045] [2023-12-20 01:07:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:04,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:04,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:07:04,616 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 01:07:04,646 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 01:07:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:04,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-20 01:07:04,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:07:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:06,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:07:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:09,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71553045] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:07:09,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:07:09,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 20] total 55 [2023-12-20 01:07:09,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677298670] [2023-12-20 01:07:09,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:07:09,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-20 01:07:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:09,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-20 01:07:09,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2610, Unknown=0, NotChecked=0, Total=2970 [2023-12-20 01:07:09,554 INFO L87 Difference]: Start difference. First operand 7314 states and 9231 transitions. Second operand has 55 states, 55 states have (on average 2.8181818181818183) internal successors, (155), 55 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:03,030 INFO L93 Difference]: Finished difference Result 25597 states and 31863 transitions. [2023-12-20 01:08:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2023-12-20 01:08:03,030 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.8181818181818183) internal successors, (155), 55 states have internal predecessors, (155), 0 states have call successors, (0), 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 56 [2023-12-20 01:08:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:03,056 INFO L225 Difference]: With dead ends: 25597 [2023-12-20 01:08:03,056 INFO L226 Difference]: Without dead ends: 21413 [2023-12-20 01:08:03,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39831 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=13648, Invalid=86524, Unknown=0, NotChecked=0, Total=100172 [2023-12-20 01:08:03,072 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 3682 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3682 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 3151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:03,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3682 Valid, 2016 Invalid, 3151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 01:08:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21413 states. [2023-12-20 01:08:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21413 to 11941. [2023-12-20 01:08:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11941 states, 11940 states have (on average 1.2571189279731994) internal successors, (15010), 11940 states have internal predecessors, (15010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11941 states to 11941 states and 15010 transitions. [2023-12-20 01:08:03,589 INFO L78 Accepts]: Start accepts. Automaton has 11941 states and 15010 transitions. Word has length 56 [2023-12-20 01:08:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:03,589 INFO L495 AbstractCegarLoop]: Abstraction has 11941 states and 15010 transitions. [2023-12-20 01:08:03,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.8181818181818183) internal successors, (155), 55 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 11941 states and 15010 transitions. [2023-12-20 01:08:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 01:08:03,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:03,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:03,597 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 01:08:03,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:03,795 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:03,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:03,796 INFO L85 PathProgramCache]: Analyzing trace with hash -297652260, now seen corresponding path program 1 times [2023-12-20 01:08:03,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:03,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014004727] [2023-12-20 01:08:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:03,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:04,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014004727] [2023-12-20 01:08:04,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014004727] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653041692] [2023-12-20 01:08:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:04,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:04,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:04,493 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 01:08:04,495 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 01:08:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:04,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 01:08:04,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:05,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:05,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653041692] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:05,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:05,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 14] total 43 [2023-12-20 01:08:05,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39550194] [2023-12-20 01:08:05,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:05,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-20 01:08:05,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:05,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-20 01:08:05,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 01:08:05,983 INFO L87 Difference]: Start difference. First operand 11941 states and 15010 transitions. Second operand has 44 states, 44 states have (on average 3.522727272727273) internal successors, (155), 43 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:14,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:14,287 INFO L93 Difference]: Finished difference Result 17858 states and 22268 transitions. [2023-12-20 01:08:14,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-20 01:08:14,288 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.522727272727273) internal successors, (155), 43 states have internal predecessors, (155), 0 states have call successors, (0), 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 56 [2023-12-20 01:08:14,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:14,301 INFO L225 Difference]: With dead ends: 17858 [2023-12-20 01:08:14,301 INFO L226 Difference]: Without dead ends: 11477 [2023-12-20 01:08:14,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4701 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3413, Invalid=14947, Unknown=0, NotChecked=0, Total=18360 [2023-12-20 01:08:14,308 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 2025 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:14,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 1749 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 01:08:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11477 states. [2023-12-20 01:08:14,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11477 to 8371. [2023-12-20 01:08:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8371 states, 8370 states have (on average 1.2507765830346476) internal successors, (10469), 8370 states have internal predecessors, (10469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8371 states to 8371 states and 10469 transitions. [2023-12-20 01:08:14,729 INFO L78 Accepts]: Start accepts. Automaton has 8371 states and 10469 transitions. Word has length 56 [2023-12-20 01:08:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:14,729 INFO L495 AbstractCegarLoop]: Abstraction has 8371 states and 10469 transitions. [2023-12-20 01:08:14,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.522727272727273) internal successors, (155), 43 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 8371 states and 10469 transitions. [2023-12-20 01:08:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 01:08:14,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:14,730 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:08:14,753 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 01:08:14,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:14,937 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:14,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:14,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1128522294, now seen corresponding path program 1 times [2023-12-20 01:08:14,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:14,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110639161] [2023-12-20 01:08:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:14,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:15,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:15,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110639161] [2023-12-20 01:08:15,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110639161] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:15,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269490091] [2023-12-20 01:08:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:15,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:15,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:15,345 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 01:08:15,350 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 01:08:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:15,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 01:08:15,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:16,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:16,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:16,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269490091] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:16,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:16,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2023-12-20 01:08:16,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665051353] [2023-12-20 01:08:16,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:16,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 01:08:16,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:16,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 01:08:16,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2023-12-20 01:08:16,572 INFO L87 Difference]: Start difference. First operand 8371 states and 10469 transitions. Second operand has 30 states, 30 states have (on average 4.733333333333333) internal successors, (142), 29 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:17,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:17,862 INFO L93 Difference]: Finished difference Result 12093 states and 15109 transitions. [2023-12-20 01:08:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 01:08:17,863 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.733333333333333) internal successors, (142), 29 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-20 01:08:17,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:17,872 INFO L225 Difference]: With dead ends: 12093 [2023-12-20 01:08:17,872 INFO L226 Difference]: Without dead ends: 8047 [2023-12-20 01:08:17,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=484, Invalid=1678, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 01:08:17,878 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 733 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:17,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 547 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:08:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8047 states. [2023-12-20 01:08:18,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8047 to 6697. [2023-12-20 01:08:18,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6697 states, 6696 states have (on average 1.250448028673835) internal successors, (8373), 6696 states have internal predecessors, (8373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 8373 transitions. [2023-12-20 01:08:18,245 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 8373 transitions. Word has length 58 [2023-12-20 01:08:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:18,246 INFO L495 AbstractCegarLoop]: Abstraction has 6697 states and 8373 transitions. [2023-12-20 01:08:18,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.733333333333333) internal successors, (142), 29 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:18,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 8373 transitions. [2023-12-20 01:08:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 01:08:18,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:18,247 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:18,268 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 01:08:18,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:18,453 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:18,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:18,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1175166350, now seen corresponding path program 1 times [2023-12-20 01:08:18,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:18,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521368944] [2023-12-20 01:08:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:18,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:19,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:19,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521368944] [2023-12-20 01:08:19,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521368944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:19,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097725563] [2023-12-20 01:08:19,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:19,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:19,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:19,036 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 01:08:19,038 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 01:08:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:19,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:08:19,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:19,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:20,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097725563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:20,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:20,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-20 01:08:20,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787335321] [2023-12-20 01:08:20,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:20,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:08:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:08:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:08:20,863 INFO L87 Difference]: Start difference. First operand 6697 states and 8373 transitions. Second operand has 32 states, 32 states have (on average 8.0625) internal successors, (258), 31 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:08:24,775 INFO L93 Difference]: Finished difference Result 12988 states and 16297 transitions. [2023-12-20 01:08:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-20 01:08:24,777 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.0625) internal successors, (258), 31 states have internal predecessors, (258), 0 states have call successors, (0), 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 01:08:24,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:08:24,785 INFO L225 Difference]: With dead ends: 12988 [2023-12-20 01:08:24,785 INFO L226 Difference]: Without dead ends: 7178 [2023-12-20 01:08:24,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2004 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1692, Invalid=7238, Unknown=0, NotChecked=0, Total=8930 [2023-12-20 01:08:24,792 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 1040 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:08:24,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 922 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 01:08:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2023-12-20 01:08:25,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 6697. [2023-12-20 01:08:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6697 states, 6696 states have (on average 1.2240143369175627) internal successors, (8196), 6696 states have internal predecessors, (8196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 8196 transitions. [2023-12-20 01:08:25,181 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 8196 transitions. Word has length 92 [2023-12-20 01:08:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:08:25,181 INFO L495 AbstractCegarLoop]: Abstraction has 6697 states and 8196 transitions. [2023-12-20 01:08:25,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.0625) internal successors, (258), 31 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:08:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 8196 transitions. [2023-12-20 01:08:25,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 01:08:25,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:08:25,183 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:08:25,189 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 01:08:25,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:25,389 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:08:25,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:08:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1275648929, now seen corresponding path program 1 times [2023-12-20 01:08:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:08:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887871148] [2023-12-20 01:08:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:08:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 52 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 01:08:26,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:08:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887871148] [2023-12-20 01:08:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887871148] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:08:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587339090] [2023-12-20 01:08:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:08:26,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:08:26,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:08:26,013 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 01:08:26,018 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 01:08:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:08:26,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-20 01:08:26,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:08:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:28,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:08:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:08:33,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587339090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:08:33,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:08:33,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 26] total 66 [2023-12-20 01:08:33,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462475900] [2023-12-20 01:08:33,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:08:33,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-20 01:08:33,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:08:33,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-20 01:08:33,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=3820, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 01:08:33,569 INFO L87 Difference]: Start difference. First operand 6697 states and 8196 transitions. Second operand has 66 states, 66 states have (on average 3.6515151515151514) internal successors, (241), 66 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:01,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:10:01,294 INFO L93 Difference]: Finished difference Result 26407 states and 31910 transitions. [2023-12-20 01:10:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 357 states. [2023-12-20 01:10:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.6515151515151514) internal successors, (241), 66 states have internal predecessors, (241), 0 states have call successors, (0), 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 93 [2023-12-20 01:10:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:10:01,341 INFO L225 Difference]: With dead ends: 26407 [2023-12-20 01:10:01,341 INFO L226 Difference]: Without dead ends: 23036 [2023-12-20 01:10:01,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 419 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71982 ImplicationChecksByTransitivity, 83.8s TimeCoverageRelationStatistics Valid=23712, Invalid=153108, Unknown=0, NotChecked=0, Total=176820 [2023-12-20 01:10:01,368 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 6404 mSDsluCounter, 5100 mSDsCounter, 0 mSdLazyCounter, 5884 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6404 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 6364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 5884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:10:01,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6404 Valid, 5304 Invalid, 6364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 5884 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-20 01:10:01,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23036 states. [2023-12-20 01:10:02,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23036 to 12910. [2023-12-20 01:10:02,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12910 states, 12909 states have (on average 1.2285227360756061) internal successors, (15859), 12909 states have internal predecessors, (15859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12910 states to 12910 states and 15859 transitions. [2023-12-20 01:10:02,229 INFO L78 Accepts]: Start accepts. Automaton has 12910 states and 15859 transitions. Word has length 93 [2023-12-20 01:10:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:10:02,229 INFO L495 AbstractCegarLoop]: Abstraction has 12910 states and 15859 transitions. [2023-12-20 01:10:02,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.6515151515151514) internal successors, (241), 66 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 12910 states and 15859 transitions. [2023-12-20 01:10:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 01:10:02,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:10:02,233 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:10:02,238 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 01:10:02,438 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,SelfDestructingSolverStorable22 [2023-12-20 01:10:02,439 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:10:02,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:10:02,439 INFO L85 PathProgramCache]: Analyzing trace with hash -156663636, now seen corresponding path program 1 times [2023-12-20 01:10:02,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:10:02,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007932032] [2023-12-20 01:10:02,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:02,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:10:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:03,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:10:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007932032] [2023-12-20 01:10:03,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007932032] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:10:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990753779] [2023-12-20 01:10:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:03,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:10:03,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:10:03,661 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 01:10:03,663 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 01:10:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:03,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 01:10:03,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:10:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 41 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:04,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:10:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:06,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990753779] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:10:06,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:10:06,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12, 12] total 46 [2023-12-20 01:10:06,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344739024] [2023-12-20 01:10:06,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:10:06,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 01:10:06,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:10:06,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 01:10:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1925, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 01:10:06,164 INFO L87 Difference]: Start difference. First operand 12910 states and 15859 transitions. Second operand has 46 states, 46 states have (on average 5.586956521739131) internal successors, (257), 46 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:10:25,265 INFO L93 Difference]: Finished difference Result 35471 states and 43130 transitions. [2023-12-20 01:10:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-20 01:10:25,265 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.586956521739131) internal successors, (257), 46 states have internal predecessors, (257), 0 states have call successors, (0), 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 01:10:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:10:25,289 INFO L225 Difference]: With dead ends: 35471 [2023-12-20 01:10:25,289 INFO L226 Difference]: Without dead ends: 28449 [2023-12-20 01:10:25,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19207 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=6602, Invalid=50280, Unknown=0, NotChecked=0, Total=56882 [2023-12-20 01:10:25,297 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 3566 mSDsluCounter, 3988 mSDsCounter, 0 mSdLazyCounter, 3252 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3566 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 3252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:10:25,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3566 Valid, 4179 Invalid, 3472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 3252 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 01:10:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28449 states. [2023-12-20 01:10:26,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28449 to 15724. [2023-12-20 01:10:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15724 states, 15723 states have (on average 1.2200597850283026) internal successors, (19183), 15723 states have internal predecessors, (19183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15724 states to 15724 states and 19183 transitions. [2023-12-20 01:10:26,559 INFO L78 Accepts]: Start accepts. Automaton has 15724 states and 19183 transitions. Word has length 94 [2023-12-20 01:10:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:10:26,561 INFO L495 AbstractCegarLoop]: Abstraction has 15724 states and 19183 transitions. [2023-12-20 01:10:26,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.586956521739131) internal successors, (257), 46 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 15724 states and 19183 transitions. [2023-12-20 01:10:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 01:10:26,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:10:26,566 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:10:26,578 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 01:10:26,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 01:10:26,778 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:10:26,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:10:26,779 INFO L85 PathProgramCache]: Analyzing trace with hash -39138716, now seen corresponding path program 1 times [2023-12-20 01:10:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:10:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118612930] [2023-12-20 01:10:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:10:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:27,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:10:27,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118612930] [2023-12-20 01:10:27,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118612930] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:10:27,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230290481] [2023-12-20 01:10:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:27,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:10:27,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:10:27,563 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 01:10:27,565 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 01:10:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:27,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-20 01:10:27,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:10:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:29,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:10:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:32,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230290481] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:10:32,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:10:32,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 24] total 62 [2023-12-20 01:10:32,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571523560] [2023-12-20 01:10:32,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:10:32,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 01:10:32,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:10:32,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 01:10:32,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=3435, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 01:10:32,962 INFO L87 Difference]: Start difference. First operand 15724 states and 19183 transitions. Second operand has 62 states, 62 states have (on average 4.258064516129032) internal successors, (264), 62 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:10:56,467 INFO L93 Difference]: Finished difference Result 28731 states and 35024 transitions. [2023-12-20 01:10:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-20 01:10:56,468 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.258064516129032) internal successors, (264), 62 states have internal predecessors, (264), 0 states have call successors, (0), 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 01:10:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:10:56,485 INFO L225 Difference]: With dead ends: 28731 [2023-12-20 01:10:56,485 INFO L226 Difference]: Without dead ends: 22631 [2023-12-20 01:10:56,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7758 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=3485, Invalid=23247, Unknown=0, NotChecked=0, Total=26732 [2023-12-20 01:10:56,491 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 2339 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 3196 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 3196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:10:56,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2339 Valid, 3046 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 3196 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 01:10:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22631 states. [2023-12-20 01:10:57,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22631 to 16483. [2023-12-20 01:10:57,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16483 states, 16482 states have (on average 1.216296565950734) internal successors, (20047), 16482 states have internal predecessors, (20047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16483 states to 16483 states and 20047 transitions. [2023-12-20 01:10:57,883 INFO L78 Accepts]: Start accepts. Automaton has 16483 states and 20047 transitions. Word has length 94 [2023-12-20 01:10:57,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:10:57,883 INFO L495 AbstractCegarLoop]: Abstraction has 16483 states and 20047 transitions. [2023-12-20 01:10:57,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.258064516129032) internal successors, (264), 62 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:10:57,883 INFO L276 IsEmpty]: Start isEmpty. Operand 16483 states and 20047 transitions. [2023-12-20 01:10:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 01:10:57,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:10:57,885 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:10:57,892 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 01:10:58,090 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,SelfDestructingSolverStorable24 [2023-12-20 01:10:58,090 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:10:58,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:10:58,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1051627468, now seen corresponding path program 1 times [2023-12-20 01:10:58,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:10:58,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238389613] [2023-12-20 01:10:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:58,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:10:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:10:58,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:10:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238389613] [2023-12-20 01:10:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238389613] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:10:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836044110] [2023-12-20 01:10:58,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:10:58,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:10:58,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:10:58,897 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 01:10:58,899 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 01:10:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:10:59,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 01:10:59,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:11:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:00,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:11:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:04,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836044110] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:11:04,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:11:04,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 20] total 57 [2023-12-20 01:11:04,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134177997] [2023-12-20 01:11:04,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:11:04,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-20 01:11:04,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:11:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-20 01:11:04,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=2928, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 01:11:04,229 INFO L87 Difference]: Start difference. First operand 16483 states and 20047 transitions. Second operand has 57 states, 57 states have (on average 4.543859649122807) internal successors, (259), 57 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:13:48,743 INFO L93 Difference]: Finished difference Result 51032 states and 61595 transitions. [2023-12-20 01:13:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 453 states. [2023-12-20 01:13:48,743 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.543859649122807) internal successors, (259), 57 states have internal predecessors, (259), 0 states have call successors, (0), 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 01:13:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:13:48,783 INFO L225 Difference]: With dead ends: 51032 [2023-12-20 01:13:48,783 INFO L226 Difference]: Without dead ends: 42095 [2023-12-20 01:13:48,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 506 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105234 ImplicationChecksByTransitivity, 156.1s TimeCoverageRelationStatistics Valid=24658, Invalid=232898, Unknown=0, NotChecked=0, Total=257556 [2023-12-20 01:13:48,804 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 4293 mSDsluCounter, 5135 mSDsCounter, 0 mSdLazyCounter, 5069 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4293 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 5323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 5069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:13:48,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4293 Valid, 5267 Invalid, 5323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 5069 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-20 01:13:48,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42095 states. [2023-12-20 01:13:50,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42095 to 20751. [2023-12-20 01:13:50,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20751 states, 20750 states have (on average 1.212289156626506) internal successors, (25155), 20750 states have internal predecessors, (25155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20751 states to 20751 states and 25155 transitions. [2023-12-20 01:13:50,944 INFO L78 Accepts]: Start accepts. Automaton has 20751 states and 25155 transitions. Word has length 94 [2023-12-20 01:13:50,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:13:50,944 INFO L495 AbstractCegarLoop]: Abstraction has 20751 states and 25155 transitions. [2023-12-20 01:13:50,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.543859649122807) internal successors, (259), 57 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 20751 states and 25155 transitions. [2023-12-20 01:13:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 01:13:50,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:13:50,946 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:13:50,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 01:13:51,150 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,SelfDestructingSolverStorable25 [2023-12-20 01:13:51,150 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:13:51,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:13:51,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1482197109, now seen corresponding path program 1 times [2023-12-20 01:13:51,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:13:51,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102085045] [2023-12-20 01:13:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:13:51,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:13:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:13:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:51,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:13:51,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102085045] [2023-12-20 01:13:51,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102085045] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:13:51,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459731039] [2023-12-20 01:13:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:13:51,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:13:51,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:13:51,723 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 01:13:51,724 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 01:13:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:13:51,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-20 01:13:51,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:13:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 37 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:54,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:14:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:14:01,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459731039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:14:01,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:14:01,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28, 31] total 75 [2023-12-20 01:14:01,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061062281] [2023-12-20 01:14:01,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:14:01,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-20 01:14:01,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:14:01,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-20 01:14:01,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=4840, Unknown=0, NotChecked=0, Total=5550 [2023-12-20 01:14:01,784 INFO L87 Difference]: Start difference. First operand 20751 states and 25155 transitions. Second operand has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:15:55,277 INFO L93 Difference]: Finished difference Result 36748 states and 44526 transitions. [2023-12-20 01:15:55,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 296 states. [2023-12-20 01:15:55,278 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 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 95 [2023-12-20 01:15:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:15:55,308 INFO L225 Difference]: With dead ends: 36748 [2023-12-20 01:15:55,308 INFO L226 Difference]: Without dead ends: 30628 [2023-12-20 01:15:55,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51631 ImplicationChecksByTransitivity, 109.0s TimeCoverageRelationStatistics Valid=18991, Invalid=116801, Unknown=0, NotChecked=0, Total=135792 [2023-12-20 01:15:55,319 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 4212 mSDsluCounter, 3256 mSDsCounter, 0 mSdLazyCounter, 3869 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4212 SdHoareTripleChecker+Valid, 3372 SdHoareTripleChecker+Invalid, 4184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 3869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:15:55,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4212 Valid, 3372 Invalid, 4184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 3869 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 01:15:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30628 states. [2023-12-20 01:15:58,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30628 to 26627. [2023-12-20 01:15:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26627 states, 26626 states have (on average 1.2099076091038834) internal successors, (32215), 26626 states have internal predecessors, (32215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26627 states to 26627 states and 32215 transitions. [2023-12-20 01:15:58,246 INFO L78 Accepts]: Start accepts. Automaton has 26627 states and 32215 transitions. Word has length 95 [2023-12-20 01:15:58,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:15:58,247 INFO L495 AbstractCegarLoop]: Abstraction has 26627 states and 32215 transitions. [2023-12-20 01:15:58,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:58,247 INFO L276 IsEmpty]: Start isEmpty. Operand 26627 states and 32215 transitions. [2023-12-20 01:15:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:15:58,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:15:58,249 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 01:15:58,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 01:15:58,466 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,SelfDestructingSolverStorable26 [2023-12-20 01:15:58,466 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:15:58,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:15:58,466 INFO L85 PathProgramCache]: Analyzing trace with hash -437280450, now seen corresponding path program 1 times [2023-12-20 01:15:58,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:15:58,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172606218] [2023-12-20 01:15:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:15:58,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:15:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:15:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:15:58,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:15:58,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172606218] [2023-12-20 01:15:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172606218] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:15:58,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892991931] [2023-12-20 01:15:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:15:58,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:15:58,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:15:58,845 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 01:15:58,846 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 01:15:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:15:58,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:15:58,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:15:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:15:59,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:16:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:16:01,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892991931] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:16:01,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:16:01,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-12-20 01:16:01,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531171161] [2023-12-20 01:16:01,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:16:01,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-20 01:16:01,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:16:01,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-20 01:16:01,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 01:16:01,141 INFO L87 Difference]: Start difference. First operand 26627 states and 32215 transitions. Second operand has 40 states, 40 states have (on average 6.325) internal successors, (253), 40 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:16:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:16:07,424 INFO L93 Difference]: Finished difference Result 57471 states and 69698 transitions. [2023-12-20 01:16:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-20 01:16:07,425 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.325) internal successors, (253), 40 states have internal predecessors, (253), 0 states have call successors, (0), 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 01:16:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:16:07,459 INFO L225 Difference]: With dead ends: 57471 [2023-12-20 01:16:07,459 INFO L226 Difference]: Without dead ends: 38036 [2023-12-20 01:16:07,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1312, Invalid=5660, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 01:16:07,469 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 1064 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:16:07,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 1500 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 01:16:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38036 states. [2023-12-20 01:16:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38036 to 33649. [2023-12-20 01:16:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33649 states, 33648 states have (on average 1.200190204469805) internal successors, (40384), 33648 states have internal predecessors, (40384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:16:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33649 states to 33649 states and 40384 transitions. [2023-12-20 01:16:11,407 INFO L78 Accepts]: Start accepts. Automaton has 33649 states and 40384 transitions. Word has length 96 [2023-12-20 01:16:11,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:16:11,407 INFO L495 AbstractCegarLoop]: Abstraction has 33649 states and 40384 transitions. [2023-12-20 01:16:11,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.325) internal successors, (253), 40 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:16:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand 33649 states and 40384 transitions. [2023-12-20 01:16:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:16:11,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:16:11,436 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 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 01:16:11,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 01:16:11,641 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,SelfDestructingSolverStorable27 [2023-12-20 01:16:11,641 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:16:11,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:16:11,641 INFO L85 PathProgramCache]: Analyzing trace with hash 964895566, now seen corresponding path program 1 times [2023-12-20 01:16:11,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:16:11,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665525451] [2023-12-20 01:16:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:16:11,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:16:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:16:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:16:12,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:16:12,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665525451] [2023-12-20 01:16:12,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665525451] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:16:12,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806963514] [2023-12-20 01:16:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:16:12,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:16:12,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:16:12,218 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 01:16:12,252 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 01:16:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:16:12,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-20 01:16:12,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:16:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:16:14,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:16:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:16:18,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806963514] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:16:18,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:16:18,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 56 [2023-12-20 01:16:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299977930] [2023-12-20 01:16:18,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:16:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-20 01:16:18,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:16:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-20 01:16:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=2789, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 01:16:18,856 INFO L87 Difference]: Start difference. First operand 33649 states and 40384 transitions. Second operand has 56 states, 56 states have (on average 4.625) internal successors, (259), 56 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:16:38,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:16:38,917 INFO L93 Difference]: Finished difference Result 47633 states and 57064 transitions. [2023-12-20 01:16:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-20 01:16:38,918 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.625) internal successors, (259), 56 states have internal predecessors, (259), 0 states have call successors, (0), 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 01:16:38,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:16:38,952 INFO L225 Difference]: With dead ends: 47633 [2023-12-20 01:16:38,952 INFO L226 Difference]: Without dead ends: 37856 [2023-12-20 01:16:38,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7618 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=4482, Invalid=20958, Unknown=0, NotChecked=0, Total=25440 [2023-12-20 01:16:38,962 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 2572 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 3308 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 3450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 3308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:16:38,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2572 Valid, 2654 Invalid, 3450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 3308 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 01:16:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37856 states. [2023-12-20 01:16:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37856 to 34049. [2023-12-20 01:16:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34049 states, 34048 states have (on average 1.2017739661654134) internal successors, (40918), 34048 states have internal predecessors, (40918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:16:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34049 states to 34049 states and 40918 transitions. [2023-12-20 01:16:43,567 INFO L78 Accepts]: Start accepts. Automaton has 34049 states and 40918 transitions. Word has length 96 [2023-12-20 01:16:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:16:43,567 INFO L495 AbstractCegarLoop]: Abstraction has 34049 states and 40918 transitions. [2023-12-20 01:16:43,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.625) internal successors, (259), 56 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:16:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 34049 states and 40918 transitions. [2023-12-20 01:16:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:16:43,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:16:43,569 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 01:16:43,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 01:16:43,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:16:43,775 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:16:43,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:16:43,775 INFO L85 PathProgramCache]: Analyzing trace with hash -809451358, now seen corresponding path program 1 times [2023-12-20 01:16:43,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:16:43,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205060695] [2023-12-20 01:16:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:16:43,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:16:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:16:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:16:44,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:16:44,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205060695] [2023-12-20 01:16:44,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205060695] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:16:44,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512412885] [2023-12-20 01:16:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:16:44,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:16:44,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:16:44,134 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 01:16:44,136 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 01:16:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:16:44,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:16:44,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:16:45,210 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:16:45,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:16:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:16:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512412885] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:16:46,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:16:46,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 39 [2023-12-20 01:16:46,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540673843] [2023-12-20 01:16:46,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:16:46,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 01:16:46,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:16:46,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 01:16:46,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1317, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:16:46,235 INFO L87 Difference]: Start difference. First operand 34049 states and 40918 transitions. Second operand has 39 states, 39 states have (on average 6.641025641025641) internal successors, (259), 39 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:16:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:16:57,409 INFO L93 Difference]: Finished difference Result 85033 states and 102296 transitions. [2023-12-20 01:16:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-20 01:16:57,410 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.641025641025641) internal successors, (259), 39 states have internal predecessors, (259), 0 states have call successors, (0), 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 01:16:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:16:57,470 INFO L225 Difference]: With dead ends: 85033 [2023-12-20 01:16:57,470 INFO L226 Difference]: Without dead ends: 61737 [2023-12-20 01:16:57,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1543, Invalid=7387, Unknown=0, NotChecked=0, Total=8930 [2023-12-20 01:16:57,482 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1054 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:16:57,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 2163 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 01:16:57,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61737 states. [2023-12-20 01:17:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61737 to 46620. [2023-12-20 01:17:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46620 states, 46619 states have (on average 1.2069756966043887) internal successors, (56268), 46619 states have internal predecessors, (56268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:17:04,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46620 states to 46620 states and 56268 transitions. [2023-12-20 01:17:04,030 INFO L78 Accepts]: Start accepts. Automaton has 46620 states and 56268 transitions. Word has length 96 [2023-12-20 01:17:04,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:17:04,030 INFO L495 AbstractCegarLoop]: Abstraction has 46620 states and 56268 transitions. [2023-12-20 01:17:04,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.641025641025641) internal successors, (259), 39 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:17:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 46620 states and 56268 transitions. [2023-12-20 01:17:04,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 01:17:04,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:17:04,032 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 01:17:04,039 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 01:17:04,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:17:04,237 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:17:04,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:17:04,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2002874981, now seen corresponding path program 1 times [2023-12-20 01:17:04,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:17:04,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302690642] [2023-12-20 01:17:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:17:04,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:17:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:17:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:17:05,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:17:05,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302690642] [2023-12-20 01:17:05,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302690642] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:17:05,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40654892] [2023-12-20 01:17:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:17:05,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:17:05,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:17:05,879 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 01:17:05,881 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 01:17:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:17:05,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-20 01:17:05,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:17:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:17:08,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:17:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:17:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40654892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:17:13,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:17:13,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 74 [2023-12-20 01:17:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526195044] [2023-12-20 01:17:13,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:17:13,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-20 01:17:13,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:17:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-20 01:17:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=5194, Unknown=0, NotChecked=0, Total=5550 [2023-12-20 01:17:13,002 INFO L87 Difference]: Start difference. First operand 46620 states and 56268 transitions. Second operand has 75 states, 75 states have (on average 3.64) internal successors, (273), 74 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:20:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:20:50,215 INFO L93 Difference]: Finished difference Result 99741 states and 119878 transitions. [2023-12-20 01:20:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 576 states. [2023-12-20 01:20:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.64) internal successors, (273), 74 states have internal predecessors, (273), 0 states have call successors, (0), 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 01:20:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:20:50,298 INFO L225 Difference]: With dead ends: 99741 [2023-12-20 01:20:50,298 INFO L226 Difference]: Without dead ends: 74960 [2023-12-20 01:20:50,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 647 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182218 ImplicationChecksByTransitivity, 202.5s TimeCoverageRelationStatistics Valid=47458, Invalid=373094, Unknown=0, NotChecked=0, Total=420552 [2023-12-20 01:20:50,354 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 5842 mSDsluCounter, 6009 mSDsCounter, 0 mSdLazyCounter, 7053 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5842 SdHoareTripleChecker+Valid, 6154 SdHoareTripleChecker+Invalid, 7489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 7053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:20:50,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5842 Valid, 6154 Invalid, 7489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 7053 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-20 01:20:50,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74960 states. Received shutdown request... [2023-12-20 01:20:57,138 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 01:20:57,138 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 01:20:58,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 01:20:58,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 01:20:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74960 to 53442. [2023-12-20 01:20:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53442 states, 53441 states have (on average 1.2080425141745101) internal successors, (64559), 53441 states have internal predecessors, (64559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:20:58,568 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 01:20:58,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 01:20:58,568 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-20 01:20:58,571 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] [2023-12-20 01:20:58,573 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 01:20:58,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:20:58 BoogieIcfgContainer [2023-12-20 01:20:58,574 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 01:20:58,575 INFO L158 Benchmark]: Toolchain (without parser) took 848791.28ms. Allocated memory was 262.1MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 209.6MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-20 01:20:58,575 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 201.3MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 01:20:58,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.41ms. Allocated memory is still 262.1MB. Free memory was 209.2MB in the beginning and 195.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 01:20:58,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.77ms. Allocated memory is still 262.1MB. Free memory was 195.6MB in the beginning and 193.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 01:20:58,575 INFO L158 Benchmark]: Boogie Preprocessor took 45.84ms. Allocated memory is still 262.1MB. Free memory was 193.5MB in the beginning and 191.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 01:20:58,575 INFO L158 Benchmark]: RCFGBuilder took 421.18ms. Allocated memory is still 262.1MB. Free memory was 191.1MB in the beginning and 171.2MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-20 01:20:58,575 INFO L158 Benchmark]: TraceAbstraction took 848059.63ms. Allocated memory was 262.1MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 170.4MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-20 01:20:58,576 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 201.3MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 211.41ms. Allocated memory is still 262.1MB. Free memory was 209.2MB in the beginning and 195.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.77ms. Allocated memory is still 262.1MB. Free memory was 195.6MB in the beginning and 193.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.84ms. Allocated memory is still 262.1MB. Free memory was 193.5MB in the beginning and 191.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 421.18ms. Allocated memory is still 262.1MB. Free memory was 191.1MB in the beginning and 171.2MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 848059.63ms. Allocated memory was 262.1MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 170.4MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 2.3GB. 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: 280]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 280). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 848.0s, OverallIterations: 31, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 736.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43080 SdHoareTripleChecker+Valid, 38.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43080 mSDsluCounter, 43110 SdHoareTripleChecker+Invalid, 34.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40289 mSDsCounter, 2661 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43750 IncrementalHoareTripleChecker+Invalid, 46411 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2661 mSolverCounterUnsat, 2821 mSDtfsCounter, 43750 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5579 GetRequests, 2102 SyntacticMatches, 7 SemanticMatches, 3470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499660 ImplicationChecksByTransitivity, 676.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46620occurred in iteration=30, InterpolantAutomatonStates: 2836, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 34.5s AutomataMinimizationTime, 31 MinimizatonAttempts, 95388 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 71.2s InterpolantComputationTime, 3130 NumberOfCodeBlocks, 3130 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 4348 ConstructedInterpolants, 0 QuantifiedInterpolants, 103718 SizeOfPredicates, 139 NumberOfNonLiveVariables, 5167 ConjunctsInSsa, 497 ConjunctsInUnsatCore, 63 InterpolantComputations, 15 PerfectInterpolantSequences, 957/2817 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