/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:00:22,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:00:22,367 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 01:00:22,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:00:22,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:00:22,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:00:22,385 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:00:22,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:00:22,386 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:00:22,389 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:00:22,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:00:22,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:00:22,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:00:22,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:00:22,391 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:00:22,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:00:22,391 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:00:22,391 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:00:22,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:00:22,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:00:22,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:00:22,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:00:22,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:00:22,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:00:22,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:00:22,393 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:00:22,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:00:22,393 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:00:22,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:00:22,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:00:22,395 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:00:22,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:00:22,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:00:22,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:00:22,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:00:22,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:00:22,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:00:22,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:00:22,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:00:22,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:00:22,396 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:00:22,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:00:22,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:00:22,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:00:22,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:00:22,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:00:22,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:00:22,605 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:00:22,605 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:00:22,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:00:23,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:00:23,844 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:00:23,845 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:00:23,852 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861e654ea/71e4c51b332943a287639b38eb82c428/FLAGdefef9be4 [2023-12-20 01:00:23,862 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861e654ea/71e4c51b332943a287639b38eb82c428 [2023-12-20 01:00:23,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:00:23,865 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:00:23,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:00:23,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:00:23,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:00:23,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:00:23" (1/1) ... [2023-12-20 01:00:23,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565e0165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:23, skipping insertion in model container [2023-12-20 01:00:23,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:00:23" (1/1) ... [2023-12-20 01:00:23,912 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:00:24,068 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c[6940,6953] [2023-12-20 01:00:24,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:00:24,080 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:00:24,106 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c[6940,6953] [2023-12-20 01:00:24,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:00:24,117 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:00:24,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24 WrapperNode [2023-12-20 01:00:24,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:00:24,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:00:24,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:00:24,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:00:24,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,183 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 244 [2023-12-20 01:00:24,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:00:24,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:00:24,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:00:24,184 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:00:24,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,223 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 01:00:24,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:00:24,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:00:24,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:00:24,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:00:24,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (1/1) ... [2023-12-20 01:00:24,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:00:24,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:00:24,264 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 01:00:24,279 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 01:00:24,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:00:24,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:00:24,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:00:24,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:00:24,355 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:00:24,356 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:00:24,608 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:00:24,629 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:00:24,629 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:00:24,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:00:24 BoogieIcfgContainer [2023-12-20 01:00:24,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:00:24,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:00:24,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:00:24,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:00:24,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:00:23" (1/3) ... [2023-12-20 01:00:24,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277ef82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:00:24, skipping insertion in model container [2023-12-20 01:00:24,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:24" (2/3) ... [2023-12-20 01:00:24,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277ef82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:00:24, skipping insertion in model container [2023-12-20 01:00:24,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:00:24" (3/3) ... [2023-12-20 01:00:24,635 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:00:24,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:00:24,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:00:24,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:00:24,682 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;@386cc2a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:00:24,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:00:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.7580645161290323) internal successors, (109), 63 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 01:00:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 01:00:24,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:24,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:24,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:24,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:24,697 INFO L85 PathProgramCache]: Analyzing trace with hash 553341809, now seen corresponding path program 1 times [2023-12-20 01:00:24,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:24,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849967725] [2023-12-20 01:00:24,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:24,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:24,973 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 01:00:24,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849967725] [2023-12-20 01:00:24,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849967725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:24,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:24,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:00:24,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183891881] [2023-12-20 01:00:24,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:24,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:00:24,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:25,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:00:25,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:00:25,007 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.7580645161290323) internal successors, (109), 63 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) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:25,073 INFO L93 Difference]: Finished difference Result 108 states and 182 transitions. [2023-12-20 01:00:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:00:25,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-20 01:00:25,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:25,082 INFO L225 Difference]: With dead ends: 108 [2023-12-20 01:00:25,082 INFO L226 Difference]: Without dead ends: 62 [2023-12-20 01:00:25,085 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 01:00:25,087 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:25,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:25,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-20 01:00:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-20 01:00:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 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 01:00:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2023-12-20 01:00:25,112 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 22 [2023-12-20 01:00:25,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:25,112 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2023-12-20 01:00:25,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2023-12-20 01:00:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 01:00:25,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:25,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:25,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:00:25,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:25,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:25,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1178010663, now seen corresponding path program 1 times [2023-12-20 01:00:25,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:25,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898430542] [2023-12-20 01:00:25,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:25,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:25,198 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 01:00:25,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:25,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898430542] [2023-12-20 01:00:25,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898430542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:25,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:25,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:00:25,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635862741] [2023-12-20 01:00:25,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:25,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:00:25,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:00:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:00:25,200 INFO L87 Difference]: Start difference. First operand 62 states and 87 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:25,219 INFO L93 Difference]: Finished difference Result 136 states and 205 transitions. [2023-12-20 01:00:25,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:00:25,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-20 01:00:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:25,221 INFO L225 Difference]: With dead ends: 136 [2023-12-20 01:00:25,221 INFO L226 Difference]: Without dead ends: 95 [2023-12-20 01:00:25,221 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 01:00:25,222 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 50 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:25,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 177 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-20 01:00:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-12-20 01:00:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 92 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 01:00:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 137 transitions. [2023-12-20 01:00:25,230 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 137 transitions. Word has length 38 [2023-12-20 01:00:25,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:25,230 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 137 transitions. [2023-12-20 01:00:25,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,230 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 137 transitions. [2023-12-20 01:00:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 01:00:25,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:25,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:25,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:00:25,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:25,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:25,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2089214662, now seen corresponding path program 1 times [2023-12-20 01:00:25,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:25,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089285530] [2023-12-20 01:00:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:25,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:25,322 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 01:00:25,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089285530] [2023-12-20 01:00:25,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089285530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:25,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:25,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:00:25,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250507478] [2023-12-20 01:00:25,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:25,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:00:25,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:00:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:00:25,325 INFO L87 Difference]: Start difference. First operand 93 states and 137 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:25,410 INFO L93 Difference]: Finished difference Result 381 states and 601 transitions. [2023-12-20 01:00:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:00:25,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-20 01:00:25,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:25,418 INFO L225 Difference]: With dead ends: 381 [2023-12-20 01:00:25,418 INFO L226 Difference]: Without dead ends: 309 [2023-12-20 01:00:25,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:00:25,422 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 389 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:25,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 356 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:25,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-20 01:00:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 163. [2023-12-20 01:00:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 162 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2023-12-20 01:00:25,453 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 38 [2023-12-20 01:00:25,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:25,454 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2023-12-20 01:00:25,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,454 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2023-12-20 01:00:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-20 01:00:25,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:25,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:25,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:00:25,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:25,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:25,456 INFO L85 PathProgramCache]: Analyzing trace with hash 328114147, now seen corresponding path program 1 times [2023-12-20 01:00:25,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:25,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266883523] [2023-12-20 01:00:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:25,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:25,605 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 01:00:25,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:25,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266883523] [2023-12-20 01:00:25,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266883523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:25,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:25,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:00:25,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449323692] [2023-12-20 01:00:25,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:25,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:00:25,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:00:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:00:25,619 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:25,639 INFO L93 Difference]: Finished difference Result 177 states and 265 transitions. [2023-12-20 01:00:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:00:25,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-20 01:00:25,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:25,641 INFO L225 Difference]: With dead ends: 177 [2023-12-20 01:00:25,641 INFO L226 Difference]: Without dead ends: 175 [2023-12-20 01:00:25,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:00:25,644 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 1 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:25,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 242 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:25,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-20 01:00:25,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2023-12-20 01:00:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.5058823529411764) internal successors, (256), 170 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 256 transitions. [2023-12-20 01:00:25,651 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 256 transitions. Word has length 39 [2023-12-20 01:00:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:25,651 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 256 transitions. [2023-12-20 01:00:25,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 256 transitions. [2023-12-20 01:00:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 01:00:25,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:25,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:25,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:00:25,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:25,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1582634382, now seen corresponding path program 1 times [2023-12-20 01:00:25,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:25,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210357202] [2023-12-20 01:00:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:25,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:25,708 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 01:00:25,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:25,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210357202] [2023-12-20 01:00:25,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210357202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:25,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:25,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:00:25,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994115598] [2023-12-20 01:00:25,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:25,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:00:25,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:00:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:00:25,710 INFO L87 Difference]: Start difference. First operand 171 states and 256 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:25,739 INFO L93 Difference]: Finished difference Result 443 states and 678 transitions. [2023-12-20 01:00:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:00:25,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-20 01:00:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:25,742 INFO L225 Difference]: With dead ends: 443 [2023-12-20 01:00:25,742 INFO L226 Difference]: Without dead ends: 293 [2023-12-20 01:00:25,744 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 01:00:25,746 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 38 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 141 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 01:00:25,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 141 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-20 01:00:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 287. [2023-12-20 01:00:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.5034965034965035) internal successors, (430), 286 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 430 transitions. [2023-12-20 01:00:25,763 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 430 transitions. Word has length 40 [2023-12-20 01:00:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:25,763 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 430 transitions. [2023-12-20 01:00:25,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 430 transitions. [2023-12-20 01:00:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 01:00:25,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:25,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:25,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:00:25,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:25,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:25,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1783001514, now seen corresponding path program 1 times [2023-12-20 01:00:25,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:25,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037362321] [2023-12-20 01:00:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:25,818 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 01:00:25,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:25,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037362321] [2023-12-20 01:00:25,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037362321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:25,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:25,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:00:25,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8165519] [2023-12-20 01:00:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:25,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:00:25,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:00:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:00:25,821 INFO L87 Difference]: Start difference. First operand 287 states and 430 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:25,850 INFO L93 Difference]: Finished difference Result 755 states and 1136 transitions. [2023-12-20 01:00:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:00:25,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-20 01:00:25,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:25,852 INFO L225 Difference]: With dead ends: 755 [2023-12-20 01:00:25,852 INFO L226 Difference]: Without dead ends: 489 [2023-12-20 01:00:25,853 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 01:00:25,855 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 46 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:25,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 175 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-20 01:00:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 487. [2023-12-20 01:00:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.477366255144033) internal successors, (718), 486 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 718 transitions. [2023-12-20 01:00:25,880 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 718 transitions. Word has length 41 [2023-12-20 01:00:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:25,881 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 718 transitions. [2023-12-20 01:00:25,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 718 transitions. [2023-12-20 01:00:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-20 01:00:25,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:25,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:25,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:00:25,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:25,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2069403532, now seen corresponding path program 1 times [2023-12-20 01:00:25,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:25,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361775065] [2023-12-20 01:00:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:25,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:25,935 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 01:00:25,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:25,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361775065] [2023-12-20 01:00:25,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361775065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:25,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:25,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:00:25,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495450796] [2023-12-20 01:00:25,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:25,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:00:25,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:00:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:00:25,937 INFO L87 Difference]: Start difference. First operand 487 states and 718 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:25,977 INFO L93 Difference]: Finished difference Result 942 states and 1404 transitions. [2023-12-20 01:00:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:00:25,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-20 01:00:25,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:25,982 INFO L225 Difference]: With dead ends: 942 [2023-12-20 01:00:25,982 INFO L226 Difference]: Without dead ends: 675 [2023-12-20 01:00:25,982 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 01:00:25,984 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 51 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:25,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 187 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:25,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-12-20 01:00:25,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 673. [2023-12-20 01:00:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 672 states have (on average 1.4642857142857142) internal successors, (984), 672 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 984 transitions. [2023-12-20 01:00:26,002 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 984 transitions. Word has length 42 [2023-12-20 01:00:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:26,003 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 984 transitions. [2023-12-20 01:00:26,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,003 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 984 transitions. [2023-12-20 01:00:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 01:00:26,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:26,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:26,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:00:26,006 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:26,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1411089419, now seen corresponding path program 1 times [2023-12-20 01:00:26,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:26,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781651720] [2023-12-20 01:00:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:26,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:00:26,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:26,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781651720] [2023-12-20 01:00:26,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781651720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:26,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:26,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:00:26,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658175810] [2023-12-20 01:00:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:26,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:00:26,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:26,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:00:26,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:00:26,098 INFO L87 Difference]: Start difference. First operand 673 states and 984 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:26,159 INFO L93 Difference]: Finished difference Result 1553 states and 2312 transitions. [2023-12-20 01:00:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:00:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 01:00:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:26,163 INFO L225 Difference]: With dead ends: 1553 [2023-12-20 01:00:26,164 INFO L226 Difference]: Without dead ends: 1223 [2023-12-20 01:00:26,164 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 01:00:26,165 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 231 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:26,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 387 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:26,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2023-12-20 01:00:26,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 993. [2023-12-20 01:00:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 1.467741935483871) internal successors, (1456), 992 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1456 transitions. [2023-12-20 01:00:26,192 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1456 transitions. Word has length 59 [2023-12-20 01:00:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:26,193 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1456 transitions. [2023-12-20 01:00:26,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1456 transitions. [2023-12-20 01:00:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 01:00:26,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:26,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:26,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:00:26,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:26,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:26,195 INFO L85 PathProgramCache]: Analyzing trace with hash 399794666, now seen corresponding path program 1 times [2023-12-20 01:00:26,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:26,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669821646] [2023-12-20 01:00:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:26,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:00:26,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:26,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669821646] [2023-12-20 01:00:26,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669821646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:26,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:26,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:00:26,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709711484] [2023-12-20 01:00:26,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:26,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:00:26,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:00:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:00:26,291 INFO L87 Difference]: Start difference. First operand 993 states and 1456 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:26,346 INFO L93 Difference]: Finished difference Result 1873 states and 2784 transitions. [2023-12-20 01:00:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:00:26,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 01:00:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:26,350 INFO L225 Difference]: With dead ends: 1873 [2023-12-20 01:00:26,350 INFO L226 Difference]: Without dead ends: 1543 [2023-12-20 01:00:26,351 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 01:00:26,354 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 238 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:26,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 359 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-12-20 01:00:26,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1313. [2023-12-20 01:00:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 1.4695121951219512) internal successors, (1928), 1312 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1928 transitions. [2023-12-20 01:00:26,381 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1928 transitions. Word has length 59 [2023-12-20 01:00:26,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:26,382 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 1928 transitions. [2023-12-20 01:00:26,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1928 transitions. [2023-12-20 01:00:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 01:00:26,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:26,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:00:26,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:26,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1593197684, now seen corresponding path program 1 times [2023-12-20 01:00:26,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:26,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697136765] [2023-12-20 01:00:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:00:26,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:26,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697136765] [2023-12-20 01:00:26,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697136765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:26,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:26,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:00:26,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593643931] [2023-12-20 01:00:26,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:26,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:00:26,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:00:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:00:26,451 INFO L87 Difference]: Start difference. First operand 1313 states and 1928 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:26,479 INFO L93 Difference]: Finished difference Result 2605 states and 3834 transitions. [2023-12-20 01:00:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:00:26,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-12-20 01:00:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:26,482 INFO L225 Difference]: With dead ends: 2605 [2023-12-20 01:00:26,482 INFO L226 Difference]: Without dead ends: 1315 [2023-12-20 01:00:26,483 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 01:00:26,484 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 42 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:26,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 175 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2023-12-20 01:00:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1313. [2023-12-20 01:00:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 1.451219512195122) internal successors, (1904), 1312 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1904 transitions. [2023-12-20 01:00:26,511 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1904 transitions. Word has length 60 [2023-12-20 01:00:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:26,511 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 1904 transitions. [2023-12-20 01:00:26,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1904 transitions. [2023-12-20 01:00:26,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 01:00:26,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:26,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:26,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:00:26,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:26,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash -749647339, now seen corresponding path program 1 times [2023-12-20 01:00:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012345196] [2023-12-20 01:00:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:00:26,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:26,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012345196] [2023-12-20 01:00:26,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012345196] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:00:26,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185099665] [2023-12-20 01:00:26,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:26,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:00:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:00:26,991 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 01:00:27,020 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 01:00:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:27,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 01:00:27,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:00:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:00:27,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:00:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:00:27,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185099665] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:00:27,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:00:27,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2023-12-20 01:00:27,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542659489] [2023-12-20 01:00:27,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:00:27,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 01:00:27,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 01:00:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:00:27,287 INFO L87 Difference]: Start difference. First operand 1313 states and 1904 transitions. Second operand has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:28,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:28,871 INFO L93 Difference]: Finished difference Result 8237 states and 11860 transitions. [2023-12-20 01:00:28,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 01:00:28,871 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 0 states have call successors, (0), 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 60 [2023-12-20 01:00:28,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:28,888 INFO L225 Difference]: With dead ends: 8237 [2023-12-20 01:00:28,889 INFO L226 Difference]: Without dead ends: 7339 [2023-12-20 01:00:28,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=289, Invalid=1043, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 01:00:28,892 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1665 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:28,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 1017 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 01:00:28,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2023-12-20 01:00:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 6233. [2023-12-20 01:00:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6233 states, 6232 states have (on average 1.4178433889602053) internal successors, (8836), 6232 states have internal predecessors, (8836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 8836 transitions. [2023-12-20 01:00:29,047 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 8836 transitions. Word has length 60 [2023-12-20 01:00:29,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:29,048 INFO L495 AbstractCegarLoop]: Abstraction has 6233 states and 8836 transitions. [2023-12-20 01:00:29,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 8836 transitions. [2023-12-20 01:00:29,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 01:00:29,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:29,049 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:29,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 01:00:29,255 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,SelfDestructingSolverStorable10 [2023-12-20 01:00:29,255 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:29,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:29,256 INFO L85 PathProgramCache]: Analyzing trace with hash 241927816, now seen corresponding path program 1 times [2023-12-20 01:00:29,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:29,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316092352] [2023-12-20 01:00:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:29,316 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 01:00:29,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:29,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316092352] [2023-12-20 01:00:29,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316092352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:29,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:29,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:00:29,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343053119] [2023-12-20 01:00:29,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:29,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:00:29,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:29,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:00:29,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:00:29,319 INFO L87 Difference]: Start difference. First operand 6233 states and 8836 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:29,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:29,478 INFO L93 Difference]: Finished difference Result 10087 states and 14414 transitions. [2023-12-20 01:00:29,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:00:29,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 01:00:29,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:29,499 INFO L225 Difference]: With dead ends: 10087 [2023-12-20 01:00:29,499 INFO L226 Difference]: Without dead ends: 8875 [2023-12-20 01:00:29,501 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 01:00:29,501 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 225 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:29,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 401 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:29,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8875 states. [2023-12-20 01:00:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8875 to 7515. [2023-12-20 01:00:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 7514 states have (on average 1.4154910833111525) internal successors, (10636), 7514 states have internal predecessors, (10636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 10636 transitions. [2023-12-20 01:00:29,670 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 10636 transitions. Word has length 61 [2023-12-20 01:00:29,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:29,670 INFO L495 AbstractCegarLoop]: Abstraction has 7515 states and 10636 transitions. [2023-12-20 01:00:29,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 10636 transitions. [2023-12-20 01:00:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 01:00:29,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:29,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:29,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:00:29,671 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:29,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1014919611, now seen corresponding path program 1 times [2023-12-20 01:00:29,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:29,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737052322] [2023-12-20 01:00:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:29,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:29,710 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 01:00:29,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737052322] [2023-12-20 01:00:29,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737052322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:29,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:29,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:00:29,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640257747] [2023-12-20 01:00:29,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:29,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:00:29,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:29,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:00:29,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:00:29,720 INFO L87 Difference]: Start difference. First operand 7515 states and 10636 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:29,838 INFO L93 Difference]: Finished difference Result 10612 states and 14938 transitions. [2023-12-20 01:00:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:00:29,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 01:00:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:29,850 INFO L225 Difference]: With dead ends: 10612 [2023-12-20 01:00:29,850 INFO L226 Difference]: Without dead ends: 3120 [2023-12-20 01:00:29,855 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 01:00:29,856 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 34 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:29,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 162 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:29,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2023-12-20 01:00:29,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 3118. [2023-12-20 01:00:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 3117 states have (on average 1.3583573949310235) internal successors, (4234), 3117 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4234 transitions. [2023-12-20 01:00:29,934 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4234 transitions. Word has length 62 [2023-12-20 01:00:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:29,935 INFO L495 AbstractCegarLoop]: Abstraction has 3118 states and 4234 transitions. [2023-12-20 01:00:29,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4234 transitions. [2023-12-20 01:00:29,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:00:29,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:29,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:29,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:00:29,936 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:29,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:29,936 INFO L85 PathProgramCache]: Analyzing trace with hash 914787371, now seen corresponding path program 1 times [2023-12-20 01:00:29,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:29,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997435929] [2023-12-20 01:00:29,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:29,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:30,165 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 01:00:30,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:30,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997435929] [2023-12-20 01:00:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997435929] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:00:30,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611890072] [2023-12-20 01:00:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:30,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:00:30,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:00:30,166 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 01:00:30,169 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 01:00:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:30,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 01:00:30,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:00:31,309 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 01:00:31,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:00:32,688 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 01:00:32,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611890072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:00:32,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:00:32,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 16] total 36 [2023-12-20 01:00:32,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705534573] [2023-12-20 01:00:32,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:00:32,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 01:00:32,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:32,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 01:00:32,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 01:00:32,690 INFO L87 Difference]: Start difference. First operand 3118 states and 4234 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 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 01:00:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:50,015 INFO L93 Difference]: Finished difference Result 60854 states and 82006 transitions. [2023-12-20 01:00:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-20 01:00:50,015 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 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) Word has length 64 [2023-12-20 01:00:50,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:50,137 INFO L225 Difference]: With dead ends: 60854 [2023-12-20 01:00:50,137 INFO L226 Difference]: Without dead ends: 57761 [2023-12-20 01:00:50,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33039 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=12665, Invalid=58891, Unknown=0, NotChecked=0, Total=71556 [2023-12-20 01:00:50,170 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 5500 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5500 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 3209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:50,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5500 Valid, 2408 Invalid, 3209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 01:00:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57761 states. [2023-12-20 01:00:51,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57761 to 34036. [2023-12-20 01:00:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34036 states, 34035 states have (on average 1.3443807844865578) internal successors, (45756), 34035 states have internal predecessors, (45756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34036 states to 34036 states and 45756 transitions. [2023-12-20 01:00:51,663 INFO L78 Accepts]: Start accepts. Automaton has 34036 states and 45756 transitions. Word has length 64 [2023-12-20 01:00:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:51,663 INFO L495 AbstractCegarLoop]: Abstraction has 34036 states and 45756 transitions. [2023-12-20 01:00:51,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 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 01:00:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 34036 states and 45756 transitions. [2023-12-20 01:00:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:00:51,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:51,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:51,673 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 01:00:51,865 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,SelfDestructingSolverStorable13 [2023-12-20 01:00:51,866 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:51,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1775311146, now seen corresponding path program 1 times [2023-12-20 01:00:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:51,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762041066] [2023-12-20 01:00:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,925 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 01:00:51,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:51,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762041066] [2023-12-20 01:00:51,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762041066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:51,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:51,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:00:51,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468278723] [2023-12-20 01:00:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:51,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:00:51,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:00:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:00:51,926 INFO L87 Difference]: Start difference. First operand 34036 states and 45756 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:52,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:52,601 INFO L93 Difference]: Finished difference Result 51961 states and 69754 transitions. [2023-12-20 01:00:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:00:52,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 01:00:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:52,635 INFO L225 Difference]: With dead ends: 51961 [2023-12-20 01:00:52,635 INFO L226 Difference]: Without dead ends: 21117 [2023-12-20 01:00:52,651 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 01:00:52,652 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 23 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:52,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21117 states. [2023-12-20 01:00:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21117 to 21115. [2023-12-20 01:00:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21115 states, 21114 states have (on average 1.3198825423889362) internal successors, (27868), 21114 states have internal predecessors, (27868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21115 states to 21115 states and 27868 transitions. [2023-12-20 01:00:53,288 INFO L78 Accepts]: Start accepts. Automaton has 21115 states and 27868 transitions. Word has length 64 [2023-12-20 01:00:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:53,288 INFO L495 AbstractCegarLoop]: Abstraction has 21115 states and 27868 transitions. [2023-12-20 01:00:53,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 21115 states and 27868 transitions. [2023-12-20 01:00:53,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:00:53,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:53,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:53,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:00:53,290 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:53,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1487582904, now seen corresponding path program 1 times [2023-12-20 01:00:53,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:53,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674341177] [2023-12-20 01:00:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:53,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:53,360 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 01:00:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674341177] [2023-12-20 01:00:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674341177] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:00:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373738037] [2023-12-20 01:00:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:53,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:00:53,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:00:53,362 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 01:00:53,363 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 01:00:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:53,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 01:00:53,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:00:53,632 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 01:00:53,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:00:53,703 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 01:00:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373738037] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:00:53,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:00:53,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-20 01:00:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617096277] [2023-12-20 01:00:53,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:00:53,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 01:00:53,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:53,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 01:00:53,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:00:53,705 INFO L87 Difference]: Start difference. First operand 21115 states and 27868 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:54,323 INFO L93 Difference]: Finished difference Result 36738 states and 48903 transitions. [2023-12-20 01:00:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 01:00:54,324 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 01:00:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:54,349 INFO L225 Difference]: With dead ends: 36738 [2023-12-20 01:00:54,349 INFO L226 Difference]: Without dead ends: 23140 [2023-12-20 01:00:54,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:00:54,359 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 367 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:54,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 236 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:00:54,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23140 states. [2023-12-20 01:00:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23140 to 22806. [2023-12-20 01:00:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22806 states, 22805 states have (on average 1.3169041876781407) internal successors, (30032), 22805 states have internal predecessors, (30032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22806 states to 22806 states and 30032 transitions. [2023-12-20 01:00:55,095 INFO L78 Accepts]: Start accepts. Automaton has 22806 states and 30032 transitions. Word has length 65 [2023-12-20 01:00:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:55,095 INFO L495 AbstractCegarLoop]: Abstraction has 22806 states and 30032 transitions. [2023-12-20 01:00:55,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:55,095 INFO L276 IsEmpty]: Start isEmpty. Operand 22806 states and 30032 transitions. [2023-12-20 01:00:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:00:55,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:55,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:55,101 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 01:00:55,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:00:55,300 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:55,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash 780730908, now seen corresponding path program 1 times [2023-12-20 01:00:55,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:55,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530915851] [2023-12-20 01:00:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:55,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:00:55,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:55,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530915851] [2023-12-20 01:00:55,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530915851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:55,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:55,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:00:55,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750413308] [2023-12-20 01:00:55,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:55,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:00:55,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:00:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:00:55,326 INFO L87 Difference]: Start difference. First operand 22806 states and 30032 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:56,013 INFO L93 Difference]: Finished difference Result 51623 states and 67756 transitions. [2023-12-20 01:00:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:00:56,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 01:00:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:56,047 INFO L225 Difference]: With dead ends: 51623 [2023-12-20 01:00:56,047 INFO L226 Difference]: Without dead ends: 30082 [2023-12-20 01:00:56,063 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 01:00:56,064 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 38 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:56,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 177 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30082 states. [2023-12-20 01:00:56,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30082 to 25909. [2023-12-20 01:00:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25909 states, 25908 states have (on average 1.2926895167515826) internal successors, (33491), 25908 states have internal predecessors, (33491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25909 states to 25909 states and 33491 transitions. [2023-12-20 01:00:56,893 INFO L78 Accepts]: Start accepts. Automaton has 25909 states and 33491 transitions. Word has length 65 [2023-12-20 01:00:56,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:56,893 INFO L495 AbstractCegarLoop]: Abstraction has 25909 states and 33491 transitions. [2023-12-20 01:00:56,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:56,893 INFO L276 IsEmpty]: Start isEmpty. Operand 25909 states and 33491 transitions. [2023-12-20 01:00:56,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:00:56,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:56,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:56,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:00:56,895 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:56,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash 327884376, now seen corresponding path program 1 times [2023-12-20 01:00:56,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:56,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108624598] [2023-12-20 01:00:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:56,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:00:56,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:56,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108624598] [2023-12-20 01:00:56,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108624598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:56,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:56,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:00:56,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878983149] [2023-12-20 01:00:56,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:56,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:00:56,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:56,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:00:56,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:00:56,922 INFO L87 Difference]: Start difference. First operand 25909 states and 33491 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:57,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:57,882 INFO L93 Difference]: Finished difference Result 63027 states and 81162 transitions. [2023-12-20 01:00:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:00:57,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 01:00:57,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:57,925 INFO L225 Difference]: With dead ends: 63027 [2023-12-20 01:00:57,927 INFO L226 Difference]: Without dead ends: 37816 [2023-12-20 01:00:57,952 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 01:00:57,953 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 37 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:57,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 194 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37816 states. [2023-12-20 01:00:59,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37816 to 32252. [2023-12-20 01:00:59,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32252 states, 32251 states have (on average 1.2744100958109825) internal successors, (41101), 32251 states have internal predecessors, (41101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32252 states to 32252 states and 41101 transitions. [2023-12-20 01:00:59,337 INFO L78 Accepts]: Start accepts. Automaton has 32252 states and 41101 transitions. Word has length 65 [2023-12-20 01:00:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:59,337 INFO L495 AbstractCegarLoop]: Abstraction has 32252 states and 41101 transitions. [2023-12-20 01:00:59,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:00:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 32252 states and 41101 transitions. [2023-12-20 01:00:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 01:00:59,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:59,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:59,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:00:59,340 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:59,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:59,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1651643457, now seen corresponding path program 1 times [2023-12-20 01:00:59,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:59,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098566073] [2023-12-20 01:00:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:59,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:00:59,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098566073] [2023-12-20 01:00:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098566073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:59,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:59,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:00:59,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204722537] [2023-12-20 01:00:59,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:59,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:00:59,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:59,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:00:59,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:00:59,371 INFO L87 Difference]: Start difference. First operand 32252 states and 41101 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 01:01:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:00,179 INFO L93 Difference]: Finished difference Result 42388 states and 53799 transitions. [2023-12-20 01:01:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:00,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) Word has length 66 [2023-12-20 01:01:00,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:00,208 INFO L225 Difference]: With dead ends: 42388 [2023-12-20 01:01:00,209 INFO L226 Difference]: Without dead ends: 26497 [2023-12-20 01:01:00,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:00,220 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 35 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:00,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 201 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26497 states. [2023-12-20 01:01:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26497 to 22849. [2023-12-20 01:01:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22849 states, 22848 states have (on average 1.248030462184874) internal successors, (28515), 22848 states have internal predecessors, (28515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22849 states to 22849 states and 28515 transitions. [2023-12-20 01:01:01,085 INFO L78 Accepts]: Start accepts. Automaton has 22849 states and 28515 transitions. Word has length 66 [2023-12-20 01:01:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:01,085 INFO L495 AbstractCegarLoop]: Abstraction has 22849 states and 28515 transitions. [2023-12-20 01:01:01,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 01:01:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 22849 states and 28515 transitions. [2023-12-20 01:01:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 01:01:01,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:01,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:01,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:01:01,087 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:01,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:01,087 INFO L85 PathProgramCache]: Analyzing trace with hash 20597721, now seen corresponding path program 1 times [2023-12-20 01:01:01,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273065175] [2023-12-20 01:01:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:01,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:02,157 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 01:01:02,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:02,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273065175] [2023-12-20 01:01:02,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273065175] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:01:02,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154713710] [2023-12-20 01:01:02,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:02,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:01:02,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:01:02,159 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 01:01:02,184 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 01:01:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:02,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 01:01:02,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:01:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:02,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:01:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:04,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154713710] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:01:04,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:01:04,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 14] total 42 [2023-12-20 01:01:04,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786255385] [2023-12-20 01:01:04,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:01:04,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-20 01:01:04,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:04,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-20 01:01:04,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1651, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 01:01:04,451 INFO L87 Difference]: Start difference. First operand 22849 states and 28515 transitions. Second operand has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 42 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:39,685 INFO L93 Difference]: Finished difference Result 353213 states and 441981 transitions. [2023-12-20 01:03:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1209 states. [2023-12-20 01:03:39,686 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 42 states have internal predecessors, (185), 0 states have call successors, (0), 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 66 [2023-12-20 01:03:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:40,173 INFO L225 Difference]: With dead ends: 353213 [2023-12-20 01:03:40,174 INFO L226 Difference]: Without dead ends: 332831 [2023-12-20 01:03:40,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1351 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 1242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754205 ImplicationChecksByTransitivity, 134.6s TimeCoverageRelationStatistics Valid=116734, Invalid=1429558, Unknown=0, NotChecked=0, Total=1546292 [2023-12-20 01:03:40,299 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 14039 mSDsluCounter, 11332 mSDsCounter, 0 mSdLazyCounter, 13558 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14039 SdHoareTripleChecker+Valid, 11747 SdHoareTripleChecker+Invalid, 14167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 13558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:40,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14039 Valid, 11747 Invalid, 14167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [609 Valid, 13558 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-20 01:03:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332831 states. [2023-12-20 01:03:44,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332831 to 48339. [2023-12-20 01:03:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48339 states, 48338 states have (on average 1.2489345856262155) internal successors, (60371), 48338 states have internal predecessors, (60371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48339 states to 48339 states and 60371 transitions. [2023-12-20 01:03:44,477 INFO L78 Accepts]: Start accepts. Automaton has 48339 states and 60371 transitions. Word has length 66 [2023-12-20 01:03:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:44,477 INFO L495 AbstractCegarLoop]: Abstraction has 48339 states and 60371 transitions. [2023-12-20 01:03:44,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 42 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 48339 states and 60371 transitions. [2023-12-20 01:03:44,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 01:03:44,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:44,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:44,486 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 01:03:44,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:44,680 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:44,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2051553057, now seen corresponding path program 1 times [2023-12-20 01:03:44,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:44,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290153901] [2023-12-20 01:03:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:44,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:44,739 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 01:03:44,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:44,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290153901] [2023-12-20 01:03:44,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290153901] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:44,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790514426] [2023-12-20 01:03:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:44,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:44,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:44,785 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 01:03:44,788 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 01:03:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:44,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 01:03:44,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:45,019 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 01:03:45,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:45,091 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 01:03:45,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790514426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:45,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:45,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-20 01:03:45,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64501242] [2023-12-20 01:03:45,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:45,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 01:03:45,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 01:03:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:03:45,093 INFO L87 Difference]: Start difference. First operand 48339 states and 60371 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:47,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:47,448 INFO L93 Difference]: Finished difference Result 54919 states and 68358 transitions. [2023-12-20 01:03:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 01:03:47,452 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 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 66 [2023-12-20 01:03:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:47,502 INFO L225 Difference]: With dead ends: 54919 [2023-12-20 01:03:47,502 INFO L226 Difference]: Without dead ends: 48466 [2023-12-20 01:03:47,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:03:47,511 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 393 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:47,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 288 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:03:47,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48466 states. [2023-12-20 01:03:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48466 to 42548. [2023-12-20 01:03:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42548 states, 42547 states have (on average 1.2462923355348203) internal successors, (53026), 42547 states have internal predecessors, (53026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:49,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42548 states to 42548 states and 53026 transitions. [2023-12-20 01:03:49,877 INFO L78 Accepts]: Start accepts. Automaton has 42548 states and 53026 transitions. Word has length 66 [2023-12-20 01:03:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:49,877 INFO L495 AbstractCegarLoop]: Abstraction has 42548 states and 53026 transitions. [2023-12-20 01:03:49,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:49,878 INFO L276 IsEmpty]: Start isEmpty. Operand 42548 states and 53026 transitions. [2023-12-20 01:03:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 01:03:49,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:49,893 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:49,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 01:03:50,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:50,098 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:50,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash -601415119, now seen corresponding path program 1 times [2023-12-20 01:03:50,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:50,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013299431] [2023-12-20 01:03:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:50,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 01:03:50,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:50,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013299431] [2023-12-20 01:03:50,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013299431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:50,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:50,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:50,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944993982] [2023-12-20 01:03:50,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:50,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:50,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:50,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:50,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:50,219 INFO L87 Difference]: Start difference. First operand 42548 states and 53026 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:52,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:52,587 INFO L93 Difference]: Finished difference Result 83189 states and 103494 transitions. [2023-12-20 01:03:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:52,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 01:03:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:52,628 INFO L225 Difference]: With dead ends: 83189 [2023-12-20 01:03:52,629 INFO L226 Difference]: Without dead ends: 41579 [2023-12-20 01:03:52,640 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 01:03:52,640 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 27 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:52,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 209 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:52,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41579 states. [2023-12-20 01:03:54,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41579 to 26558. [2023-12-20 01:03:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26558 states, 26557 states have (on average 1.2085325902775164) internal successors, (32095), 26557 states have internal predecessors, (32095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26558 states to 26558 states and 32095 transitions. [2023-12-20 01:03:54,640 INFO L78 Accepts]: Start accepts. Automaton has 26558 states and 32095 transitions. Word has length 106 [2023-12-20 01:03:54,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:54,640 INFO L495 AbstractCegarLoop]: Abstraction has 26558 states and 32095 transitions. [2023-12-20 01:03:54,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 26558 states and 32095 transitions. [2023-12-20 01:03:54,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:03:54,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:54,646 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:54,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 01:03:54,646 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:54,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:54,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1466415916, now seen corresponding path program 1 times [2023-12-20 01:03:54,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:54,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567797415] [2023-12-20 01:03:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:54,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 31 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:55,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:55,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567797415] [2023-12-20 01:03:55,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567797415] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:55,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697551847] [2023-12-20 01:03:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:55,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:55,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:55,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:03:55,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 01:03:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:55,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:03:55,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:56,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:57,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697551847] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:57,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:57,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2023-12-20 01:03:57,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104372031] [2023-12-20 01:03:57,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:57,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-20 01:03:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-20 01:03:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1575, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 01:03:57,570 INFO L87 Difference]: Start difference. First operand 26558 states and 32095 transitions. Second operand has 42 states, 42 states have (on average 7.119047619047619) internal successors, (299), 42 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:10,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:10,942 INFO L93 Difference]: Finished difference Result 70858 states and 85289 transitions. [2023-12-20 01:04:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-20 01:04:10,943 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.119047619047619) internal successors, (299), 42 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-20 01:04:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:10,998 INFO L225 Difference]: With dead ends: 70858 [2023-12-20 01:04:10,998 INFO L226 Difference]: Without dead ends: 52580 [2023-12-20 01:04:11,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7640 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3382, Invalid=19268, Unknown=0, NotChecked=0, Total=22650 [2023-12-20 01:04:11,010 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 2627 mSDsluCounter, 3848 mSDsCounter, 0 mSdLazyCounter, 4110 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2627 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 4280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 4110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:11,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2627 Valid, 3969 Invalid, 4280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 4110 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 01:04:11,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52580 states. [2023-12-20 01:04:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52580 to 31485. [2023-12-20 01:04:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31485 states, 31484 states have (on average 1.2104243425231864) internal successors, (38109), 31484 states have internal predecessors, (38109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31485 states to 31485 states and 38109 transitions. [2023-12-20 01:04:13,857 INFO L78 Accepts]: Start accepts. Automaton has 31485 states and 38109 transitions. Word has length 107 [2023-12-20 01:04:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:13,858 INFO L495 AbstractCegarLoop]: Abstraction has 31485 states and 38109 transitions. [2023-12-20 01:04:13,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.119047619047619) internal successors, (299), 42 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 31485 states and 38109 transitions. [2023-12-20 01:04:13,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:04:13,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:13,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:13,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 01:04:14,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:14,067 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:14,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1688010028, now seen corresponding path program 1 times [2023-12-20 01:04:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:14,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991076908] [2023-12-20 01:04:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:14,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-20 01:04:14,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:14,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991076908] [2023-12-20 01:04:14,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991076908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:14,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:14,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:14,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530253531] [2023-12-20 01:04:14,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:14,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:14,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:14,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:14,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:14,106 INFO L87 Difference]: Start difference. First operand 31485 states and 38109 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:15,952 INFO L93 Difference]: Finished difference Result 36471 states and 43998 transitions. [2023-12-20 01:04:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:15,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-20 01:04:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:15,972 INFO L225 Difference]: With dead ends: 36471 [2023-12-20 01:04:15,972 INFO L226 Difference]: Without dead ends: 22658 [2023-12-20 01:04:15,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:15,981 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 24 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:15,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 180 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:15,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22658 states. [2023-12-20 01:04:17,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22658 to 20946. [2023-12-20 01:04:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20946 states, 20945 states have (on average 1.1850560993077106) internal successors, (24821), 20945 states have internal predecessors, (24821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20946 states to 20946 states and 24821 transitions. [2023-12-20 01:04:17,948 INFO L78 Accepts]: Start accepts. Automaton has 20946 states and 24821 transitions. Word has length 107 [2023-12-20 01:04:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:17,949 INFO L495 AbstractCegarLoop]: Abstraction has 20946 states and 24821 transitions. [2023-12-20 01:04:17,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 20946 states and 24821 transitions. [2023-12-20 01:04:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:04:17,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:17,953 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:17,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:04:17,953 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:17,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash -684104513, now seen corresponding path program 1 times [2023-12-20 01:04:17,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:17,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131379721] [2023-12-20 01:04:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:17,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:18,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131379721] [2023-12-20 01:04:18,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131379721] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933304345] [2023-12-20 01:04:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:18,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:18,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:18,506 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 01:04:18,507 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 01:04:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:18,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-20 01:04:18,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:20,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 29 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:25,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933304345] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:25,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:25,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23, 25] total 60 [2023-12-20 01:04:25,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115791762] [2023-12-20 01:04:25,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:25,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 01:04:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:25,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 01:04:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=3188, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 01:04:25,593 INFO L87 Difference]: Start difference. First operand 20946 states and 24821 transitions. Second operand has 60 states, 60 states have (on average 5.083333333333333) internal successors, (305), 60 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:19,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:13:19,156 INFO L93 Difference]: Finished difference Result 164826 states and 195648 transitions. [2023-12-20 01:13:19,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1565 states. [2023-12-20 01:13:19,156 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 5.083333333333333) internal successors, (305), 60 states have internal predecessors, (305), 0 states have call successors, (0), 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 108 [2023-12-20 01:13:19,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:13:19,321 INFO L225 Difference]: With dead ends: 164826 [2023-12-20 01:13:19,321 INFO L226 Difference]: Without dead ends: 147085 [2023-12-20 01:13:19,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1792 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 1621 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280479 ImplicationChecksByTransitivity, 497.2s TimeCoverageRelationStatistics Valid=137741, Invalid=2494765, Unknown=0, NotChecked=0, Total=2632506 [2023-12-20 01:13:19,597 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 15114 mSDsluCounter, 14336 mSDsCounter, 0 mSdLazyCounter, 16124 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15114 SdHoareTripleChecker+Valid, 14792 SdHoareTripleChecker+Invalid, 16896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 16124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:13:19,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15114 Valid, 14792 Invalid, 16896 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [772 Valid, 16124 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2023-12-20 01:13:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147085 states. [2023-12-20 01:13:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147085 to 44218. [2023-12-20 01:13:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44218 states, 44217 states have (on average 1.189949566908655) internal successors, (52616), 44217 states have internal predecessors, (52616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44218 states to 44218 states and 52616 transitions. [2023-12-20 01:13:25,082 INFO L78 Accepts]: Start accepts. Automaton has 44218 states and 52616 transitions. Word has length 108 [2023-12-20 01:13:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:13:25,082 INFO L495 AbstractCegarLoop]: Abstraction has 44218 states and 52616 transitions. [2023-12-20 01:13:25,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 5.083333333333333) internal successors, (305), 60 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 44218 states and 52616 transitions. [2023-12-20 01:13:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:13:25,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:13:25,089 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:13:25,095 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 01:13:25,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:13:25,289 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:13:25,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:13:25,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1471799381, now seen corresponding path program 1 times [2023-12-20 01:13:25,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:13:25,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700544729] [2023-12-20 01:13:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:13:25,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:13:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:13:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:25,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:13:25,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700544729] [2023-12-20 01:13:25,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700544729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:13:25,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683865299] [2023-12-20 01:13:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:13:25,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:13:25,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:13:25,701 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 01:13:25,703 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 01:13:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:13:25,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:13:25,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:13:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 25 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:26,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:13:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 25 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:28,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683865299] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:13:28,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:13:28,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2023-12-20 01:13:28,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398066887] [2023-12-20 01:13:28,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:13:28,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 01:13:28,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:13:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 01:13:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:13:28,046 INFO L87 Difference]: Start difference. First operand 44218 states and 52616 transitions. Second operand has 39 states, 39 states have (on average 7.435897435897436) internal successors, (290), 39 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:13:42,182 INFO L93 Difference]: Finished difference Result 78507 states and 93678 transitions. [2023-12-20 01:13:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-12-20 01:13:42,182 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.435897435897436) internal successors, (290), 39 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-20 01:13:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:13:42,246 INFO L225 Difference]: With dead ends: 78507 [2023-12-20 01:13:42,246 INFO L226 Difference]: Without dead ends: 68892 [2023-12-20 01:13:42,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6866 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3528, Invalid=15654, Unknown=0, NotChecked=0, Total=19182 [2023-12-20 01:13:42,256 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 2296 mSDsluCounter, 4315 mSDsCounter, 0 mSdLazyCounter, 3810 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 4525 SdHoareTripleChecker+Invalid, 3888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:13:42,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 4525 Invalid, 3888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3810 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 01:13:42,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68892 states. [2023-12-20 01:13:48,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68892 to 50181. [2023-12-20 01:13:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50181 states, 50180 states have (on average 1.1952371462734157) internal successors, (59977), 50180 states have internal predecessors, (59977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50181 states to 50181 states and 59977 transitions. [2023-12-20 01:13:48,258 INFO L78 Accepts]: Start accepts. Automaton has 50181 states and 59977 transitions. Word has length 108 [2023-12-20 01:13:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:13:48,258 INFO L495 AbstractCegarLoop]: Abstraction has 50181 states and 59977 transitions. [2023-12-20 01:13:48,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.435897435897436) internal successors, (290), 39 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:13:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 50181 states and 59977 transitions. [2023-12-20 01:13:48,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:13:48,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:13:48,265 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:13:48,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 01:13:48,472 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,SelfDestructingSolverStorable25 [2023-12-20 01:13:48,472 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:13:48,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:13:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1394713623, now seen corresponding path program 1 times [2023-12-20 01:13:48,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:13:48,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166738549] [2023-12-20 01:13:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:13:48,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:13:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:13:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:48,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:13:48,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166738549] [2023-12-20 01:13:48,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166738549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:13:48,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871274384] [2023-12-20 01:13:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:13:48,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:13:48,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:13:48,909 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 01:13:48,911 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 01:13:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:13:48,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 01:13:48,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:13:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:49,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:13:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:13:51,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871274384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:13:51,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:13:51,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 39 [2023-12-20 01:13:51,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842145638] [2023-12-20 01:13:51,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:13:51,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 01:13:51,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:13:51,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 01:13:51,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1328, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:13:51,014 INFO L87 Difference]: Start difference. First operand 50181 states and 59977 transitions. Second operand has 39 states, 39 states have (on average 7.615384615384615) internal successors, (297), 39 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 01:14:12,588 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:14:12,588 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:14:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-20 01:14:12,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10803 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=5861, Invalid=25291, Unknown=0, NotChecked=0, Total=31152 [2023-12-20 01:14:12,592 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 3772 mSDsluCounter, 4127 mSDsCounter, 0 mSdLazyCounter, 3724 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 4259 SdHoareTripleChecker+Invalid, 3913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 3724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:14:12,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3772 Valid, 4259 Invalid, 3913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 3724 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 01:14:12,593 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 01:14:12,597 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 01:14:12,797 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,SelfDestructingSolverStorable26 [2023-12-20 01:14:12,798 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (50181states) and FLOYD_HOARE automaton (currently 141 states, 39 states before enhancement),while ReachableStatesComputation was computing reachable states (116847 states constructed, input type IntersectNwa). [2023-12-20 01:14:12,801 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] [2023-12-20 01:14:12,803 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 01:14:12,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:14:12 BoogieIcfgContainer [2023-12-20 01:14:12,804 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 01:14:12,804 INFO L158 Benchmark]: Toolchain (without parser) took 828939.86ms. Allocated memory was 323.0MB in the beginning and 5.0GB in the end (delta: 4.7GB). Free memory was 270.1MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2023-12-20 01:14:12,804 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 01:14:12,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.53ms. Allocated memory is still 323.0MB. Free memory was 270.1MB in the beginning and 255.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-20 01:14:12,805 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.55ms. Allocated memory is still 323.0MB. Free memory was 255.8MB in the beginning and 253.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 01:14:12,805 INFO L158 Benchmark]: Boogie Preprocessor took 49.67ms. Allocated memory is still 323.0MB. Free memory was 253.4MB in the beginning and 250.6MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 01:14:12,805 INFO L158 Benchmark]: RCFGBuilder took 395.09ms. Allocated memory is still 323.0MB. Free memory was 250.6MB in the beginning and 228.2MB in the end (delta: 22.4MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-20 01:14:12,805 INFO L158 Benchmark]: TraceAbstraction took 828173.06ms. Allocated memory was 323.0MB in the beginning and 5.0GB in the end (delta: 4.7GB). Free memory was 227.5MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2023-12-20 01:14:12,806 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.53ms. Allocated memory is still 323.0MB. Free memory was 270.1MB in the beginning and 255.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.55ms. Allocated memory is still 323.0MB. Free memory was 255.8MB in the beginning and 253.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.67ms. Allocated memory is still 323.0MB. Free memory was 253.4MB in the beginning and 250.6MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 395.09ms. Allocated memory is still 323.0MB. Free memory was 250.6MB in the beginning and 228.2MB in the end (delta: 22.4MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 828173.06ms. Allocated memory was 323.0MB in the beginning and 5.0GB in the end (delta: 4.7GB). Free memory was 227.5MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 3.2GB. 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: 316]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 316). Cancelled while NwaCegarLoop was constructing difference of abstraction (50181states) and FLOYD_HOARE automaton (currently 141 states, 39 states before enhancement),while ReachableStatesComputation was computing reachable states (116847 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 828.1s, OverallIterations: 27, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 769.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47302 SdHoareTripleChecker+Valid, 36.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47302 mSDsluCounter, 47390 SdHoareTripleChecker+Invalid, 32.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43667 mSDsCounter, 2177 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45677 IncrementalHoareTripleChecker+Invalid, 47854 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2177 mSolverCounterUnsat, 3723 mSDtfsCounter, 45677 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5047 GetRequests, 1343 SyntacticMatches, 13 SemanticMatches, 3691 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2093382 ImplicationChecksByTransitivity, 669.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50181occurred in iteration=26, InterpolantAutomatonStates: 3345, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 31.4s AutomataMinimizationTime, 26 MinimizatonAttempts, 490354 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 23.6s InterpolantComputationTime, 2538 NumberOfCodeBlocks, 2538 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 3245 ConstructedInterpolants, 0 QuantifiedInterpolants, 48037 SizeOfPredicates, 56 NumberOfNonLiveVariables, 2714 ConjunctsInSsa, 182 ConjunctsInUnsatCore, 45 InterpolantComputations, 18 PerfectInterpolantSequences, 627/1425 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