/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.6.2.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:14:28,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:14:28,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:14:29,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:14:29,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:14:29,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:14:29,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:14:29,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:14:29,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:14:29,028 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:14:29,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:14:29,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:14:29,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:14:29,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:14:29,030 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:14:29,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:14:29,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:14:29,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:14:29,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:14:29,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:14:29,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:14:29,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:14:29,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:14:29,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:14:29,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:14:29,032 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:14:29,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:14:29,032 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:14:29,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:14:29,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:14:29,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:14:29,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:14:29,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:14:29,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:14:29,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:14:29,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:14:29,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:14:29,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:14:29,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:14:29,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:14:29,034 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:14:29,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:14:29,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:14:29,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:14:29,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:14:29,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:14:29,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:14:29,216 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:14:29,217 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:14:29,218 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2023-12-15 23:14:30,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:14:30,353 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:14:30,353 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2023-12-15 23:14:30,361 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5901f6c5/6e3225a926ae4448be9d23541b6cde68/FLAG452461ffe [2023-12-15 23:14:30,371 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5901f6c5/6e3225a926ae4448be9d23541b6cde68 [2023-12-15 23:14:30,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:14:30,374 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:14:30,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:14:30,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:14:30,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:14:30,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@266f5fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30, skipping insertion in model container [2023-12-15 23:14:30,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,432 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:14:30,612 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.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2023-12-15 23:14:30,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:14:30,622 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:14:30,658 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.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2023-12-15 23:14:30,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:14:30,670 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:14:30,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30 WrapperNode [2023-12-15 23:14:30,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:14:30,671 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:14:30,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:14:30,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:14:30,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,710 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 441 [2023-12-15 23:14:30,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:14:30,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:14:30,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:14:30,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:14:30,719 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,732 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]. [2023-12-15 23:14:30,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:14:30,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:14:30,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:14:30,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:14:30,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (1/1) ... [2023-12-15 23:14:30,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:14:30,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:14:30,793 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) [2023-12-15 23:14:30,827 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 [2023-12-15 23:14:30,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:14:30,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:14:30,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:14:30,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:14:30,943 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:14:30,945 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:14:31,395 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:14:31,423 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:14:31,423 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 23:14:31,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:14:31 BoogieIcfgContainer [2023-12-15 23:14:31,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:14:31,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:14:31,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:14:31,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:14:31,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:14:30" (1/3) ... [2023-12-15 23:14:31,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b87ab3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:14:31, skipping insertion in model container [2023-12-15 23:14:31,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:30" (2/3) ... [2023-12-15 23:14:31,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b87ab3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:14:31, skipping insertion in model container [2023-12-15 23:14:31,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:14:31" (3/3) ... [2023-12-15 23:14:31,429 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2023-12-15 23:14:31,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:14:31,441 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:14:31,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:14:31,488 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;@157d965f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:14:31,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:14:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 113 states have (on average 1.7964601769911503) internal successors, (203), 114 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 23:14:31,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:31,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:31,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:31,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:31,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2061566520, now seen corresponding path program 1 times [2023-12-15 23:14:31,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:31,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007600622] [2023-12-15 23:14:31,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:31,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:31,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:31,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007600622] [2023-12-15 23:14:31,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007600622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:31,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:31,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:14:31,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785462437] [2023-12-15 23:14:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:31,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:14:31,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:14:31,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:14:31,892 INFO L87 Difference]: Start difference. First operand has 115 states, 113 states have (on average 1.7964601769911503) internal successors, (203), 114 states have internal predecessors, (203), 0 states have call successors, (0), 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 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:31,981 INFO L93 Difference]: Finished difference Result 188 states and 323 transitions. [2023-12-15 23:14:31,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:14:31,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-15 23:14:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:31,993 INFO L225 Difference]: With dead ends: 188 [2023-12-15 23:14:31,994 INFO L226 Difference]: Without dead ends: 113 [2023-12-15 23:14:31,995 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 [2023-12-15 23:14:31,998 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:31,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 544 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:32,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-15 23:14:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-12-15 23:14:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 112 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 157 transitions. [2023-12-15 23:14:32,037 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 157 transitions. Word has length 34 [2023-12-15 23:14:32,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:32,038 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 157 transitions. [2023-12-15 23:14:32,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,038 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 157 transitions. [2023-12-15 23:14:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:14:32,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:32,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:32,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:14:32,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:32,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:32,044 INFO L85 PathProgramCache]: Analyzing trace with hash 142441090, now seen corresponding path program 1 times [2023-12-15 23:14:32,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:32,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632118640] [2023-12-15 23:14:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:32,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:32,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:32,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632118640] [2023-12-15 23:14:32,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632118640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:32,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:32,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:32,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000895891] [2023-12-15 23:14:32,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:32,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:32,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:32,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:32,195 INFO L87 Difference]: Start difference. First operand 113 states and 157 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:32,230 INFO L93 Difference]: Finished difference Result 241 states and 367 transitions. [2023-12-15 23:14:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:32,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 23:14:32,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:32,231 INFO L225 Difference]: With dead ends: 241 [2023-12-15 23:14:32,231 INFO L226 Difference]: Without dead ends: 173 [2023-12-15 23:14:32,232 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 [2023-12-15 23:14:32,233 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 96 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 344 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 [2023-12-15 23:14:32,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 344 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-15 23:14:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2023-12-15 23:14:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.488235294117647) internal successors, (253), 170 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 253 transitions. [2023-12-15 23:14:32,241 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 253 transitions. Word has length 74 [2023-12-15 23:14:32,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:32,241 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 253 transitions. [2023-12-15 23:14:32,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,241 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 253 transitions. [2023-12-15 23:14:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:14:32,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:32,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:32,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:14:32,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:32,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash 55665313, now seen corresponding path program 1 times [2023-12-15 23:14:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:32,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355580551] [2023-12-15 23:14:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:32,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:32,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355580551] [2023-12-15 23:14:32,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355580551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:32,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:32,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:32,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131446147] [2023-12-15 23:14:32,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:32,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:32,358 INFO L87 Difference]: Start difference. First operand 171 states and 253 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:32,379 INFO L93 Difference]: Finished difference Result 407 states and 641 transitions. [2023-12-15 23:14:32,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:32,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 23:14:32,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:32,384 INFO L225 Difference]: With dead ends: 407 [2023-12-15 23:14:32,385 INFO L226 Difference]: Without dead ends: 281 [2023-12-15 23:14:32,389 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 [2023-12-15 23:14:32,390 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 92 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 341 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 [2023-12-15 23:14:32,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 341 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:32,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-15 23:14:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 279. [2023-12-15 23:14:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.5467625899280575) internal successors, (430), 278 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) [2023-12-15 23:14:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 430 transitions. [2023-12-15 23:14:32,411 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 430 transitions. Word has length 74 [2023-12-15 23:14:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:32,411 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 430 transitions. [2023-12-15 23:14:32,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 430 transitions. [2023-12-15 23:14:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:14:32,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:32,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:32,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:14:32,413 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:32,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash -379309504, now seen corresponding path program 1 times [2023-12-15 23:14:32,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:32,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069412260] [2023-12-15 23:14:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:32,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:32,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:32,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069412260] [2023-12-15 23:14:32,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069412260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:32,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:32,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:32,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546347257] [2023-12-15 23:14:32,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:32,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:32,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:32,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:32,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:32,504 INFO L87 Difference]: Start difference. First operand 279 states and 430 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:32,523 INFO L93 Difference]: Finished difference Result 715 states and 1144 transitions. [2023-12-15 23:14:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:32,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 23:14:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:32,527 INFO L225 Difference]: With dead ends: 715 [2023-12-15 23:14:32,527 INFO L226 Difference]: Without dead ends: 481 [2023-12-15 23:14:32,528 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 [2023-12-15 23:14:32,534 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 80 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 312 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 [2023-12-15 23:14:32,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 312 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-15 23:14:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2023-12-15 23:14:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.5774058577405858) internal successors, (754), 478 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 754 transitions. [2023-12-15 23:14:32,560 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 754 transitions. Word has length 74 [2023-12-15 23:14:32,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:32,560 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 754 transitions. [2023-12-15 23:14:32,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 754 transitions. [2023-12-15 23:14:32,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:14:32,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:32,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:32,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:14:32,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:32,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash 7485535, now seen corresponding path program 1 times [2023-12-15 23:14:32,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:32,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284923156] [2023-12-15 23:14:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:32,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:32,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284923156] [2023-12-15 23:14:32,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284923156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:32,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:32,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:14:32,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735944148] [2023-12-15 23:14:32,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:32,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:14:32,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:32,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:14:32,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:14:32,707 INFO L87 Difference]: Start difference. First operand 479 states and 754 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:32,886 INFO L93 Difference]: Finished difference Result 3517 states and 5717 transitions. [2023-12-15 23:14:32,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:14:32,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 23:14:32,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:32,896 INFO L225 Difference]: With dead ends: 3517 [2023-12-15 23:14:32,896 INFO L226 Difference]: Without dead ends: 3083 [2023-12-15 23:14:32,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:14:32,898 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1813 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:32,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 1362 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:32,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2023-12-15 23:14:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 911. [2023-12-15 23:14:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 1.589010989010989) internal successors, (1446), 910 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1446 transitions. [2023-12-15 23:14:32,939 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1446 transitions. Word has length 74 [2023-12-15 23:14:32,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:32,939 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1446 transitions. [2023-12-15 23:14:32,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1446 transitions. [2023-12-15 23:14:32,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-15 23:14:32,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:32,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:32,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:14:32,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:32,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:32,944 INFO L85 PathProgramCache]: Analyzing trace with hash 218992084, now seen corresponding path program 1 times [2023-12-15 23:14:32,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:32,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394655209] [2023-12-15 23:14:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:32,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:33,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:33,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394655209] [2023-12-15 23:14:33,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394655209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:33,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:33,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:14:33,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430658749] [2023-12-15 23:14:33,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:14:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:14:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:14:33,141 INFO L87 Difference]: Start difference. First operand 911 states and 1446 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:33,167 INFO L93 Difference]: Finished difference Result 961 states and 1511 transitions. [2023-12-15 23:14:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:14:33,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-15 23:14:33,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:33,170 INFO L225 Difference]: With dead ends: 961 [2023-12-15 23:14:33,170 INFO L226 Difference]: Without dead ends: 959 [2023-12-15 23:14:33,171 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 [2023-12-15 23:14:33,171 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 452 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 [2023-12-15 23:14:33,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 452 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-12-15 23:14:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 943. [2023-12-15 23:14:33,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 942 states have (on average 1.5690021231422506) internal successors, (1478), 942 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1478 transitions. [2023-12-15 23:14:33,200 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1478 transitions. Word has length 75 [2023-12-15 23:14:33,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:33,200 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1478 transitions. [2023-12-15 23:14:33,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1478 transitions. [2023-12-15 23:14:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 23:14:33,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:33,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:33,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:14:33,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:33,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1800178137, now seen corresponding path program 1 times [2023-12-15 23:14:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074643724] [2023-12-15 23:14:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:33,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:33,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074643724] [2023-12-15 23:14:33,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074643724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:33,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:33,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:33,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251604581] [2023-12-15 23:14:33,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:33,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:33,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:33,276 INFO L87 Difference]: Start difference. First operand 943 states and 1478 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:33,307 INFO L93 Difference]: Finished difference Result 2627 states and 4152 transitions. [2023-12-15 23:14:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:33,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-15 23:14:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:33,312 INFO L225 Difference]: With dead ends: 2627 [2023-12-15 23:14:33,313 INFO L226 Difference]: Without dead ends: 1729 [2023-12-15 23:14:33,314 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 [2023-12-15 23:14:33,315 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 73 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 262 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 [2023-12-15 23:14:33,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 262 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2023-12-15 23:14:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1727. [2023-12-15 23:14:33,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 1.5654692931633836) internal successors, (2702), 1726 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2702 transitions. [2023-12-15 23:14:33,351 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2702 transitions. Word has length 76 [2023-12-15 23:14:33,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:33,351 INFO L495 AbstractCegarLoop]: Abstraction has 1727 states and 2702 transitions. [2023-12-15 23:14:33,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2702 transitions. [2023-12-15 23:14:33,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 23:14:33,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:33,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:33,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:14:33,352 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:33,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:33,353 INFO L85 PathProgramCache]: Analyzing trace with hash -358513117, now seen corresponding path program 1 times [2023-12-15 23:14:33,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:33,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223569805] [2023-12-15 23:14:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:33,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:33,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:33,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223569805] [2023-12-15 23:14:33,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223569805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:33,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:33,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:33,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133297805] [2023-12-15 23:14:33,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:33,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:33,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:33,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:33,391 INFO L87 Difference]: Start difference. First operand 1727 states and 2702 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:33,429 INFO L93 Difference]: Finished difference Result 3413 states and 5379 transitions. [2023-12-15 23:14:33,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:33,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-15 23:14:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:33,436 INFO L225 Difference]: With dead ends: 3413 [2023-12-15 23:14:33,437 INFO L226 Difference]: Without dead ends: 2515 [2023-12-15 23:14:33,438 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 [2023-12-15 23:14:33,439 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 100 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 356 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 [2023-12-15 23:14:33,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 356 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-12-15 23:14:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2513. [2023-12-15 23:14:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2512 states have (on average 1.5636942675159236) internal successors, (3928), 2512 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3928 transitions. [2023-12-15 23:14:33,496 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3928 transitions. Word has length 76 [2023-12-15 23:14:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:33,497 INFO L495 AbstractCegarLoop]: Abstraction has 2513 states and 3928 transitions. [2023-12-15 23:14:33,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3928 transitions. [2023-12-15 23:14:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 23:14:33,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:33,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:33,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:14:33,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:33,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:33,498 INFO L85 PathProgramCache]: Analyzing trace with hash -478728773, now seen corresponding path program 1 times [2023-12-15 23:14:33,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:33,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787632263] [2023-12-15 23:14:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:33,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:33,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:33,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787632263] [2023-12-15 23:14:33,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787632263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:33,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:33,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:33,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393590001] [2023-12-15 23:14:33,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:33,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:33,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:33,556 INFO L87 Difference]: Start difference. First operand 2513 states and 3928 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:33,634 INFO L93 Difference]: Finished difference Result 7061 states and 11018 transitions. [2023-12-15 23:14:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:33,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-15 23:14:33,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:33,647 INFO L225 Difference]: With dead ends: 7061 [2023-12-15 23:14:33,648 INFO L226 Difference]: Without dead ends: 4595 [2023-12-15 23:14:33,653 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 [2023-12-15 23:14:33,654 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 84 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 335 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 [2023-12-15 23:14:33,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 335 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2023-12-15 23:14:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4593. [2023-12-15 23:14:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4593 states, 4592 states have (on average 1.543554006968641) internal successors, (7088), 4592 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4593 states to 4593 states and 7088 transitions. [2023-12-15 23:14:33,770 INFO L78 Accepts]: Start accepts. Automaton has 4593 states and 7088 transitions. Word has length 77 [2023-12-15 23:14:33,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:33,771 INFO L495 AbstractCegarLoop]: Abstraction has 4593 states and 7088 transitions. [2023-12-15 23:14:33,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4593 states and 7088 transitions. [2023-12-15 23:14:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 23:14:33,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:33,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:33,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:14:33,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:33,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash -661055781, now seen corresponding path program 1 times [2023-12-15 23:14:33,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:33,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443354222] [2023-12-15 23:14:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:33,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443354222] [2023-12-15 23:14:33,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443354222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:33,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:33,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:33,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468584172] [2023-12-15 23:14:33,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:33,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:33,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:33,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:33,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:33,813 INFO L87 Difference]: Start difference. First operand 4593 states and 7088 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:33,939 INFO L93 Difference]: Finished difference Result 12917 states and 19826 transitions. [2023-12-15 23:14:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:33,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-15 23:14:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:33,963 INFO L225 Difference]: With dead ends: 12917 [2023-12-15 23:14:33,963 INFO L226 Difference]: Without dead ends: 8371 [2023-12-15 23:14:33,970 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 [2023-12-15 23:14:33,971 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 88 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 348 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 [2023-12-15 23:14:33,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 348 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2023-12-15 23:14:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 8369. [2023-12-15 23:14:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8369 states, 8368 states have (on average 1.5162523900573615) internal successors, (12688), 8368 states have internal predecessors, (12688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8369 states to 8369 states and 12688 transitions. [2023-12-15 23:14:34,214 INFO L78 Accepts]: Start accepts. Automaton has 8369 states and 12688 transitions. Word has length 77 [2023-12-15 23:14:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:34,215 INFO L495 AbstractCegarLoop]: Abstraction has 8369 states and 12688 transitions. [2023-12-15 23:14:34,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 8369 states and 12688 transitions. [2023-12-15 23:14:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 23:14:34,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:34,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:34,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:14:34,219 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:34,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:34,219 INFO L85 PathProgramCache]: Analyzing trace with hash -925108354, now seen corresponding path program 1 times [2023-12-15 23:14:34,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:34,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511769791] [2023-12-15 23:14:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:34,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:34,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:34,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511769791] [2023-12-15 23:14:34,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511769791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:34,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:34,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:34,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486677748] [2023-12-15 23:14:34,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:34,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:34,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:34,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:34,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:34,299 INFO L87 Difference]: Start difference. First operand 8369 states and 12688 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:34,509 INFO L93 Difference]: Finished difference Result 16693 states and 25330 transitions. [2023-12-15 23:14:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:34,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-15 23:14:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:34,526 INFO L225 Difference]: With dead ends: 16693 [2023-12-15 23:14:34,526 INFO L226 Difference]: Without dead ends: 8371 [2023-12-15 23:14:34,532 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 [2023-12-15 23:14:34,533 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 78 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 340 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 [2023-12-15 23:14:34,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 340 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2023-12-15 23:14:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 8369. [2023-12-15 23:14:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8369 states, 8368 states have (on average 1.5047801147227533) internal successors, (12592), 8368 states have internal predecessors, (12592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8369 states to 8369 states and 12592 transitions. [2023-12-15 23:14:34,708 INFO L78 Accepts]: Start accepts. Automaton has 8369 states and 12592 transitions. Word has length 106 [2023-12-15 23:14:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:34,708 INFO L495 AbstractCegarLoop]: Abstraction has 8369 states and 12592 transitions. [2023-12-15 23:14:34,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 8369 states and 12592 transitions. [2023-12-15 23:14:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 23:14:34,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:34,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:34,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:14:34,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:34,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:34,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1198246943, now seen corresponding path program 1 times [2023-12-15 23:14:34,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:34,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716580889] [2023-12-15 23:14:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:34,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:34,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:34,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716580889] [2023-12-15 23:14:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716580889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:34,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:34,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608138560] [2023-12-15 23:14:34,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:34,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:34,821 INFO L87 Difference]: Start difference. First operand 8369 states and 12592 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:34,907 INFO L93 Difference]: Finished difference Result 12533 states and 18866 transitions. [2023-12-15 23:14:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:34,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-15 23:14:34,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:34,915 INFO L225 Difference]: With dead ends: 12533 [2023-12-15 23:14:34,915 INFO L226 Difference]: Without dead ends: 4211 [2023-12-15 23:14:34,923 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 [2023-12-15 23:14:34,923 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 72 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 321 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 [2023-12-15 23:14:34,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 321 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4211 states. [2023-12-15 23:14:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4211 to 4209. [2023-12-15 23:14:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 4208 states have (on average 1.4904942965779469) internal successors, (6272), 4208 states have internal predecessors, (6272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 6272 transitions. [2023-12-15 23:14:35,049 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 6272 transitions. Word has length 106 [2023-12-15 23:14:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:35,049 INFO L495 AbstractCegarLoop]: Abstraction has 4209 states and 6272 transitions. [2023-12-15 23:14:35,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 6272 transitions. [2023-12-15 23:14:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 23:14:35,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:35,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:35,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:14:35,052 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:35,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:35,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1704532288, now seen corresponding path program 1 times [2023-12-15 23:14:35,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:35,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26096844] [2023-12-15 23:14:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:35,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:36,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:36,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26096844] [2023-12-15 23:14:36,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26096844] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:14:36,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963922931] [2023-12-15 23:14:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:36,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:14:36,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:14:36,184 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) [2023-12-15 23:14:36,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:14:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:36,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:14:36,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:14:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:14:36,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:14:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:14:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963922931] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:14:36,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:14:36,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 4] total 17 [2023-12-15 23:14:36,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605317607] [2023-12-15 23:14:36,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:14:36,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 23:14:36,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 23:14:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:14:36,895 INFO L87 Difference]: Start difference. First operand 4209 states and 6272 transitions. Second operand has 17 states, 17 states have (on average 18.058823529411764) internal successors, (307), 17 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:40,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:40,086 INFO L93 Difference]: Finished difference Result 35455 states and 52295 transitions. [2023-12-15 23:14:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-15 23:14:40,089 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.058823529411764) internal successors, (307), 17 states have internal predecessors, (307), 0 states have call successors, (0), 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 [2023-12-15 23:14:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:40,137 INFO L225 Difference]: With dead ends: 35455 [2023-12-15 23:14:40,138 INFO L226 Difference]: Without dead ends: 32605 [2023-12-15 23:14:40,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=701, Invalid=3589, Unknown=0, NotChecked=0, Total=4290 [2023-12-15 23:14:40,149 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 5363 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5363 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:40,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5363 Valid, 2577 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:14:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32605 states. [2023-12-15 23:14:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32605 to 28049. [2023-12-15 23:14:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28049 states, 28048 states have (on average 1.477752424415288) internal successors, (41448), 28048 states have internal predecessors, (41448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28049 states to 28049 states and 41448 transitions. [2023-12-15 23:14:40,730 INFO L78 Accepts]: Start accepts. Automaton has 28049 states and 41448 transitions. Word has length 106 [2023-12-15 23:14:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:40,730 INFO L495 AbstractCegarLoop]: Abstraction has 28049 states and 41448 transitions. [2023-12-15 23:14:40,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.058823529411764) internal successors, (307), 17 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 28049 states and 41448 transitions. [2023-12-15 23:14:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-15 23:14:40,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:40,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:40,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 23:14:40,939 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,SelfDestructingSolverStorable12 [2023-12-15 23:14:40,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:40,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:40,939 INFO L85 PathProgramCache]: Analyzing trace with hash 665084071, now seen corresponding path program 1 times [2023-12-15 23:14:40,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:40,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680712594] [2023-12-15 23:14:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:40,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:41,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 23:14:41,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:41,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680712594] [2023-12-15 23:14:41,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680712594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:41,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:41,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:14:41,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095985768] [2023-12-15 23:14:41,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:41,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:14:41,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:41,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:14:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:14:41,174 INFO L87 Difference]: Start difference. First operand 28049 states and 41448 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:42,408 INFO L93 Difference]: Finished difference Result 111647 states and 166003 transitions. [2023-12-15 23:14:42,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:14:42,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 [2023-12-15 23:14:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:42,535 INFO L225 Difference]: With dead ends: 111647 [2023-12-15 23:14:42,535 INFO L226 Difference]: Without dead ends: 97317 [2023-12-15 23:14:42,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:14:42,562 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1132 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:42,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 1724 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:42,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97317 states. [2023-12-15 23:14:43,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97317 to 41865. [2023-12-15 23:14:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41865 states, 41864 states have (on average 1.4740110835085036) internal successors, (61708), 41864 states have internal predecessors, (61708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41865 states to 41865 states and 61708 transitions. [2023-12-15 23:14:43,882 INFO L78 Accepts]: Start accepts. Automaton has 41865 states and 61708 transitions. Word has length 107 [2023-12-15 23:14:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:43,882 INFO L495 AbstractCegarLoop]: Abstraction has 41865 states and 61708 transitions. [2023-12-15 23:14:43,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 41865 states and 61708 transitions. [2023-12-15 23:14:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-15 23:14:43,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:43,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:43,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:14:43,886 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:43,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:43,886 INFO L85 PathProgramCache]: Analyzing trace with hash -567330907, now seen corresponding path program 1 times [2023-12-15 23:14:43,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:43,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527941877] [2023-12-15 23:14:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:43,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 23:14:44,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:44,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527941877] [2023-12-15 23:14:44,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527941877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:44,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:44,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:14:44,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008582460] [2023-12-15 23:14:44,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:44,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:14:44,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:44,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:14:44,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:14:44,024 INFO L87 Difference]: Start difference. First operand 41865 states and 61708 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:45,721 INFO L93 Difference]: Finished difference Result 125463 states and 186263 transitions. [2023-12-15 23:14:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:14:45,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2023-12-15 23:14:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:45,857 INFO L225 Difference]: With dead ends: 125463 [2023-12-15 23:14:45,857 INFO L226 Difference]: Without dead ends: 111133 [2023-12-15 23:14:45,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:14:45,878 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1179 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:45,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1557 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:45,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111133 states. [2023-12-15 23:14:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111133 to 55681. [2023-12-15 23:14:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55681 states, 55680 states have (on average 1.4721264367816091) internal successors, (81968), 55680 states have internal predecessors, (81968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55681 states to 55681 states and 81968 transitions. [2023-12-15 23:14:47,510 INFO L78 Accepts]: Start accepts. Automaton has 55681 states and 81968 transitions. Word has length 107 [2023-12-15 23:14:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:47,510 INFO L495 AbstractCegarLoop]: Abstraction has 55681 states and 81968 transitions. [2023-12-15 23:14:47,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand 55681 states and 81968 transitions. [2023-12-15 23:14:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-15 23:14:47,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:47,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:47,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:14:47,514 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:47,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1565080995, now seen corresponding path program 1 times [2023-12-15 23:14:47,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:47,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790432016] [2023-12-15 23:14:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:47,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 23:14:47,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790432016] [2023-12-15 23:14:47,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790432016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:47,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:47,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:14:47,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790043434] [2023-12-15 23:14:47,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:47,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:14:47,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:47,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:14:47,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:14:47,644 INFO L87 Difference]: Start difference. First operand 55681 states and 81968 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:49,510 INFO L93 Difference]: Finished difference Result 139279 states and 206523 transitions. [2023-12-15 23:14:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:14:49,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 [2023-12-15 23:14:49,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:49,691 INFO L225 Difference]: With dead ends: 139279 [2023-12-15 23:14:49,691 INFO L226 Difference]: Without dead ends: 124949 [2023-12-15 23:14:49,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:14:49,718 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1254 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:49,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 1486 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:49,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124949 states. [2023-12-15 23:14:51,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124949 to 69497. [2023-12-15 23:14:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69497 states, 69496 states have (on average 1.4709911361804997) internal successors, (102228), 69496 states have internal predecessors, (102228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69497 states to 69497 states and 102228 transitions. [2023-12-15 23:14:51,796 INFO L78 Accepts]: Start accepts. Automaton has 69497 states and 102228 transitions. Word has length 107 [2023-12-15 23:14:51,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:51,796 INFO L495 AbstractCegarLoop]: Abstraction has 69497 states and 102228 transitions. [2023-12-15 23:14:51,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 69497 states and 102228 transitions. [2023-12-15 23:14:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-15 23:14:51,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:51,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:51,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:14:51,800 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:51,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:51,801 INFO L85 PathProgramCache]: Analyzing trace with hash -236850527, now seen corresponding path program 1 times [2023-12-15 23:14:51,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:51,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663297959] [2023-12-15 23:14:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:51,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 23:14:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663297959] [2023-12-15 23:14:51,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663297959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:51,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:14:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296185469] [2023-12-15 23:14:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:14:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:14:51,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:14:51,910 INFO L87 Difference]: Start difference. First operand 69497 states and 102228 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:54,151 INFO L93 Difference]: Finished difference Result 153095 states and 226783 transitions. [2023-12-15 23:14:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:14:54,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2023-12-15 23:14:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:54,343 INFO L225 Difference]: With dead ends: 153095 [2023-12-15 23:14:54,343 INFO L226 Difference]: Without dead ends: 138765 [2023-12-15 23:14:54,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:14:54,382 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1345 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:54,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 1517 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138765 states. [2023-12-15 23:14:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138765 to 83313. [2023-12-15 23:14:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83313 states, 83312 states have (on average 1.4702323794891492) internal successors, (122488), 83312 states have internal predecessors, (122488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83313 states to 83313 states and 122488 transitions. [2023-12-15 23:14:56,571 INFO L78 Accepts]: Start accepts. Automaton has 83313 states and 122488 transitions. Word has length 107 [2023-12-15 23:14:56,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:56,571 INFO L495 AbstractCegarLoop]: Abstraction has 83313 states and 122488 transitions. [2023-12-15 23:14:56,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 83313 states and 122488 transitions. [2023-12-15 23:14:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-15 23:14:56,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:56,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:56,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:14:56,575 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:56,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:56,576 INFO L85 PathProgramCache]: Analyzing trace with hash -861350241, now seen corresponding path program 1 times [2023-12-15 23:14:56,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:56,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445116068] [2023-12-15 23:14:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 23:14:56,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:56,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445116068] [2023-12-15 23:14:56,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445116068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:56,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:56,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:14:56,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652141591] [2023-12-15 23:14:56,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:56,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:14:56,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:56,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:14:56,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:14:56,708 INFO L87 Difference]: Start difference. First operand 83313 states and 122488 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:59,469 INFO L93 Difference]: Finished difference Result 166911 states and 247043 transitions. [2023-12-15 23:14:59,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:14:59,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2023-12-15 23:14:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:59,670 INFO L225 Difference]: With dead ends: 166911 [2023-12-15 23:14:59,670 INFO L226 Difference]: Without dead ends: 152581 [2023-12-15 23:14:59,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:14:59,726 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1158 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:59,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1718 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:14:59,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152581 states. [2023-12-15 23:15:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152581 to 97129. [2023-12-15 23:15:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97129 states, 97128 states have (on average 1.4696894819207644) internal successors, (142748), 97128 states have internal predecessors, (142748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:02,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97129 states to 97129 states and 142748 transitions. [2023-12-15 23:15:02,456 INFO L78 Accepts]: Start accepts. Automaton has 97129 states and 142748 transitions. Word has length 107 [2023-12-15 23:15:02,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:15:02,456 INFO L495 AbstractCegarLoop]: Abstraction has 97129 states and 142748 transitions. [2023-12-15 23:15:02,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 97129 states and 142748 transitions. [2023-12-15 23:15:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-15 23:15:02,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:15:02,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:15:02,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:15:02,479 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:15:02,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:15:02,479 INFO L85 PathProgramCache]: Analyzing trace with hash 875970664, now seen corresponding path program 1 times [2023-12-15 23:15:02,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:15:02,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765427362] [2023-12-15 23:15:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:15:02,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:15:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:15:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:15:02,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:15:02,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765427362] [2023-12-15 23:15:02,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765427362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:15:02,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:15:02,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:15:02,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805458705] [2023-12-15 23:15:02,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:15:02,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:15:02,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:15:02,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:15:02,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:15:02,669 INFO L87 Difference]: Start difference. First operand 97129 states and 142748 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:05,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:15:05,629 INFO L93 Difference]: Finished difference Result 175911 states and 260071 transitions. [2023-12-15 23:15:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:15:05,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-15 23:15:05,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:15:05,893 INFO L225 Difference]: With dead ends: 175911 [2023-12-15 23:15:05,894 INFO L226 Difference]: Without dead ends: 164605 [2023-12-15 23:15:05,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:15:05,948 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1126 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:15:05,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1951 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:15:06,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164605 states. [2023-12-15 23:15:08,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164605 to 109153. [2023-12-15 23:15:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109153 states, 109152 states have (on average 1.4690340076223982) internal successors, (160348), 109152 states have internal predecessors, (160348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109153 states to 109153 states and 160348 transitions. [2023-12-15 23:15:09,057 INFO L78 Accepts]: Start accepts. Automaton has 109153 states and 160348 transitions. Word has length 107 [2023-12-15 23:15:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:15:09,058 INFO L495 AbstractCegarLoop]: Abstraction has 109153 states and 160348 transitions. [2023-12-15 23:15:09,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 109153 states and 160348 transitions. [2023-12-15 23:15:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-15 23:15:09,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:15:09,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:15:09,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:15:09,077 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:15:09,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:15:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1074919898, now seen corresponding path program 1 times [2023-12-15 23:15:09,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:15:09,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147409366] [2023-12-15 23:15:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:15:09,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:15:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:15:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:15:09,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:15:09,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147409366] [2023-12-15 23:15:09,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147409366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:15:09,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:15:09,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:15:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419749343] [2023-12-15 23:15:09,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:15:09,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:15:09,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:15:09,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:15:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:15:09,165 INFO L87 Difference]: Start difference. First operand 109153 states and 160348 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:10,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:15:10,411 INFO L93 Difference]: Finished difference Result 158493 states and 232052 transitions. [2023-12-15 23:15:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:15:10,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-15 23:15:10,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:15:10,466 INFO L225 Difference]: With dead ends: 158493 [2023-12-15 23:15:10,467 INFO L226 Difference]: Without dead ends: 49387 [2023-12-15 23:15:10,524 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 [2023-12-15 23:15:10,524 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 60 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 319 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 [2023-12-15 23:15:10,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 319 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:15:10,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49387 states. [2023-12-15 23:15:11,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49387 to 48425. [2023-12-15 23:15:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48425 states, 48424 states have (on average 1.4456467867173302) internal successors, (70004), 48424 states have internal predecessors, (70004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48425 states to 48425 states and 70004 transitions. [2023-12-15 23:15:11,802 INFO L78 Accepts]: Start accepts. Automaton has 48425 states and 70004 transitions. Word has length 110 [2023-12-15 23:15:11,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:15:11,803 INFO L495 AbstractCegarLoop]: Abstraction has 48425 states and 70004 transitions. [2023-12-15 23:15:11,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 48425 states and 70004 transitions. [2023-12-15 23:15:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-15 23:15:11,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:15:11,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:15:11,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:15:11,806 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:15:11,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:15:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1292672891, now seen corresponding path program 1 times [2023-12-15 23:15:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:15:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684306258] [2023-12-15 23:15:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:15:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:15:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:15:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:15:12,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:15:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684306258] [2023-12-15 23:15:12,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684306258] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:15:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364002644] [2023-12-15 23:15:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:15:12,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:15:12,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:15:12,238 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) [2023-12-15 23:15:12,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:15:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:15:12,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:15:12,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:15:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:15:12,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:15:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:15:13,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364002644] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:15:13,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:15:13,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-12-15 23:15:13,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803532311] [2023-12-15 23:15:13,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:15:13,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-15 23:15:13,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:15:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-15 23:15:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-12-15 23:15:13,706 INFO L87 Difference]: Start difference. First operand 48425 states and 70004 transitions. Second operand has 20 states, 20 states have (on average 13.5) internal successors, (270), 19 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:15:15,407 INFO L93 Difference]: Finished difference Result 131086 states and 190294 transitions. [2023-12-15 23:15:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:15:15,407 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.5) internal successors, (270), 19 states have internal predecessors, (270), 0 states have call successors, (0), 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 110 [2023-12-15 23:15:15,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:15:15,494 INFO L225 Difference]: With dead ends: 131086 [2023-12-15 23:15:15,494 INFO L226 Difference]: Without dead ends: 85100 [2023-12-15 23:15:15,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2023-12-15 23:15:15,521 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 1451 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:15:15,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 1034 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:15:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85100 states. [2023-12-15 23:15:16,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85100 to 49126. [2023-12-15 23:15:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49126 states, 49125 states have (on average 1.4521323155216286) internal successors, (71336), 49125 states have internal predecessors, (71336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:16,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49126 states to 49126 states and 71336 transitions. [2023-12-15 23:15:16,978 INFO L78 Accepts]: Start accepts. Automaton has 49126 states and 71336 transitions. Word has length 110 [2023-12-15 23:15:16,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:15:16,978 INFO L495 AbstractCegarLoop]: Abstraction has 49126 states and 71336 transitions. [2023-12-15 23:15:16,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.5) internal successors, (270), 19 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:16,978 INFO L276 IsEmpty]: Start isEmpty. Operand 49126 states and 71336 transitions. [2023-12-15 23:15:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-15 23:15:16,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:15:16,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:15:16,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 23:15:17,186 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,SelfDestructingSolverStorable20 [2023-12-15 23:15:17,186 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:15:17,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:15:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash 390738293, now seen corresponding path program 1 times [2023-12-15 23:15:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:15:17,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176903283] [2023-12-15 23:15:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:15:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:15:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:15:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:15:17,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:15:17,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176903283] [2023-12-15 23:15:17,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176903283] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:15:17,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124703365] [2023-12-15 23:15:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:15:17,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:15:17,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:15:17,605 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) [2023-12-15 23:15:17,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 23:15:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:15:17,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:15:17,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:15:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:15:18,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:15:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:15:18,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124703365] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:15:18,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:15:18,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-15 23:15:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368442210] [2023-12-15 23:15:18,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:15:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-15 23:15:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:15:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-15 23:15:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-12-15 23:15:18,856 INFO L87 Difference]: Start difference. First operand 49126 states and 71336 transitions. Second operand has 23 states, 23 states have (on average 12.869565217391305) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:15:28,405 INFO L93 Difference]: Finished difference Result 554592 states and 797889 transitions. [2023-12-15 23:15:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-15 23:15:28,406 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.869565217391305) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 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 110 [2023-12-15 23:15:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:15:29,314 INFO L225 Difference]: With dead ends: 554592 [2023-12-15 23:15:29,314 INFO L226 Difference]: Without dead ends: 508034 [2023-12-15 23:15:29,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3027 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1628, Invalid=8074, Unknown=0, NotChecked=0, Total=9702 [2023-12-15 23:15:29,449 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 10035 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10035 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:15:29,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10035 Valid, 2147 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] Received shutdown request... [2023-12-15 23:15:29,606 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 [2023-12-15 23:15:29,606 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:15:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508034 states. [2023-12-15 23:15:29,723 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:15:29,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 23:15:29,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:15:29,929 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 23:15:29,932 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] [2023-12-15 23:15:29,934 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:15:29,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:15:29 BoogieIcfgContainer [2023-12-15 23:15:29,935 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:15:29,936 INFO L158 Benchmark]: Toolchain (without parser) took 59561.56ms. Allocated memory was 287.3MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 244.8MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2023-12-15 23:15:29,936 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:15:29,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.54ms. Allocated memory is still 287.3MB. Free memory was 244.8MB in the beginning and 227.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 23:15:29,936 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.83ms. Allocated memory is still 287.3MB. Free memory was 227.4MB in the beginning and 223.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 23:15:29,936 INFO L158 Benchmark]: Boogie Preprocessor took 40.26ms. Allocated memory is still 287.3MB. Free memory was 223.9MB in the beginning and 220.3MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:15:29,936 INFO L158 Benchmark]: RCFGBuilder took 671.38ms. Allocated memory is still 287.3MB. Free memory was 220.3MB in the beginning and 184.6MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-15 23:15:29,936 INFO L158 Benchmark]: TraceAbstraction took 58510.16ms. Allocated memory was 287.3MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 184.0MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2023-12-15 23:15:29,937 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 295.54ms. Allocated memory is still 287.3MB. Free memory was 244.8MB in the beginning and 227.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.83ms. Allocated memory is still 287.3MB. Free memory was 227.4MB in the beginning and 223.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.26ms. Allocated memory is still 287.3MB. Free memory was 223.9MB in the beginning and 220.3MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 671.38ms. Allocated memory is still 287.3MB. Free memory was 220.3MB in the beginning and 184.6MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 58510.16ms. Allocated memory was 287.3MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 184.0MB in the beginning and 4.7GB in the end (delta: -4.5GB). 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: 561]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 561). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.5s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 32.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26680 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26680 mSDsluCounter, 21347 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16619 mSDsCounter, 184 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5527 IncrementalHoareTripleChecker+Invalid, 5711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 184 mSolverCounterUnsat, 4728 mSDtfsCounter, 5527 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 939 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4508 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109153occurred in iteration=19, InterpolantAutomatonStates: 247, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.5s AutomataMinimizationTime, 22 MinimizatonAttempts, 376410 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 2327 NumberOfCodeBlocks, 2327 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2625 ConstructedInterpolants, 0 QuantifiedInterpolants, 22837 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1231 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 28 InterpolantComputations, 19 PerfectInterpolantSequences, 225/311 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