/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/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 23:22:28,340 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 23:22:28,408 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 23:22:28,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 23:22:28,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 23:22:28,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 23:22:28,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 23:22:28,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 23:22:28,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 23:22:28,439 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 23:22:28,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 23:22:28,439 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 23:22:28,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 23:22:28,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 23:22:28,440 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 23:22:28,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 23:22:28,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 23:22:28,441 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 23:22:28,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 23:22:28,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 23:22:28,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 23:22:28,442 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 23:22:28,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 23:22:28,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 23:22:28,443 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 23:22:28,443 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 23:22:28,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 23:22:28,443 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 23:22:28,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 23:22:28,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 23:22:28,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 23:22:28,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 23:22:28,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:22:28,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 23:22:28,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 23:22:28,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 23:22:28,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 23:22:28,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 23:22:28,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 23:22:28,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 23:22:28,446 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 23:22:28,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 23:22:28,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 23:22:28,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 23:22:28,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 23:22:28,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 23:22:28,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 23:22:28,659 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 23:22:28,659 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 23:22:28,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-18 23:22:29,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 23:22:29,992 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 23:22:29,993 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-18 23:22:30,021 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f4e6a951/adf52227bebe4305bd369744a2e3daef/FLAG117606390 [2023-12-18 23:22:30,038 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f4e6a951/adf52227bebe4305bd369744a2e3daef [2023-12-18 23:22:30,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 23:22:30,041 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 23:22:30,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 23:22:30,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 23:22:30,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 23:22:30,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:22:30" (1/1) ... [2023-12-18 23:22:30,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42df3571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:30, skipping insertion in model container [2023-12-18 23:22:30,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:22:30" (1/1) ... [2023-12-18 23:22:30,154 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 23:22:30,393 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c[6450,6463] [2023-12-18 23:22:30,454 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c[13386,13399] [2023-12-18 23:22:31,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:22:31,094 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 23:22:31,129 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c[6450,6463] [2023-12-18 23:22:31,140 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c[13386,13399] [2023-12-18 23:22:31,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:22:31,468 INFO L206 MainTranslator]: Completed translation [2023-12-18 23:22:31,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31 WrapperNode [2023-12-18 23:22:31,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 23:22:31,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 23:22:31,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 23:22:31,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 23:22:31,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:31,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:31,938 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4980 [2023-12-18 23:22:31,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 23:22:31,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 23:22:31,939 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 23:22:31,939 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 23:22:31,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:31,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:32,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:32,148 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]. [2023-12-18 23:22:32,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:32,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:32,333 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:32,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:32,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:32,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:32,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 23:22:32,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 23:22:32,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 23:22:32,462 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 23:22:32,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (1/1) ... [2023-12-18 23:22:32,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:22:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:32,485 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) [2023-12-18 23:22:32,506 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 [2023-12-18 23:22:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 23:22:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 23:22:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 23:22:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 23:22:32,589 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 23:22:32,591 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 23:22:35,541 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 23:22:35,572 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 23:22:35,572 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 23:22:35,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:22:35 BoogieIcfgContainer [2023-12-18 23:22:35,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 23:22:35,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 23:22:35,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 23:22:35,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 23:22:35,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:22:30" (1/3) ... [2023-12-18 23:22:35,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0c780d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:22:35, skipping insertion in model container [2023-12-18 23:22:35,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:31" (2/3) ... [2023-12-18 23:22:35,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0c780d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:22:35, skipping insertion in model container [2023-12-18 23:22:35,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:22:35" (3/3) ... [2023-12-18 23:22:35,577 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-18 23:22:35,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 23:22:35,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 23:22:35,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 23:22:35,626 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;@3904a1ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 23:22:35,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 23:22:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-18 23:22:35,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:35,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:35,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:35,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:35,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2106044916, now seen corresponding path program 1 times [2023-12-18 23:22:35,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:35,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887473594] [2023-12-18 23:22:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:35,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887473594] [2023-12-18 23:22:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887473594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:35,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:22:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796811278] [2023-12-18 23:22:35,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:35,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 23:22:35,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 23:22:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 23:22:35,771 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:35,824 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2023-12-18 23:22:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 23:22:35,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-18 23:22:35,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:35,838 INFO L225 Difference]: With dead ends: 1597 [2023-12-18 23:22:35,838 INFO L226 Difference]: Without dead ends: 805 [2023-12-18 23:22:35,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 23:22:35,844 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:35,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-18 23:22:35,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-18 23:22:35,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2023-12-18 23:22:35,890 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 17 [2023-12-18 23:22:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:35,891 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2023-12-18 23:22:35,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2023-12-18 23:22:35,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-18 23:22:35,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:35,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:35,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 23:22:35,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:35,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1602116366, now seen corresponding path program 1 times [2023-12-18 23:22:35,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:35,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012738750] [2023-12-18 23:22:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:36,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:36,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012738750] [2023-12-18 23:22:36,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012738750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:36,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:36,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:22:36,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566201756] [2023-12-18 23:22:36,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:36,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:22:36,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:36,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:22:36,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:22:36,045 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:36,087 INFO L93 Difference]: Finished difference Result 839 states and 1576 transitions. [2023-12-18 23:22:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:22:36,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-18 23:22:36,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:36,091 INFO L225 Difference]: With dead ends: 839 [2023-12-18 23:22:36,091 INFO L226 Difference]: Without dead ends: 805 [2023-12-18 23:22:36,091 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 [2023-12-18 23:22:36,092 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:36,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-18 23:22:36,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-18 23:22:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8779576587795765) internal successors, (1508), 804 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1508 transitions. [2023-12-18 23:22:36,105 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1508 transitions. Word has length 17 [2023-12-18 23:22:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:36,105 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1508 transitions. [2023-12-18 23:22:36,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1508 transitions. [2023-12-18 23:22:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-18 23:22:36,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:36,106 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] [2023-12-18 23:22:36,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 23:22:36,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:36,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1530210848, now seen corresponding path program 1 times [2023-12-18 23:22:36,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008149777] [2023-12-18 23:22:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:36,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:36,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008149777] [2023-12-18 23:22:36,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008149777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:36,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:36,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:22:36,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803318956] [2023-12-18 23:22:36,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:36,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:22:36,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:36,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:22:36,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:22:36,169 INFO L87 Difference]: Start difference. First operand 805 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:36,247 INFO L93 Difference]: Finished difference Result 991 states and 1802 transitions. [2023-12-18 23:22:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 23:22:36,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-18 23:22:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:36,251 INFO L225 Difference]: With dead ends: 991 [2023-12-18 23:22:36,251 INFO L226 Difference]: Without dead ends: 960 [2023-12-18 23:22:36,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 23:22:36,252 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:36,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-12-18 23:22:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 834. [2023-12-18 23:22:36,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8677884615384615) internal successors, (1554), 833 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1554 transitions. [2023-12-18 23:22:36,264 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1554 transitions. Word has length 32 [2023-12-18 23:22:36,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:36,264 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1554 transitions. [2023-12-18 23:22:36,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,264 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1554 transitions. [2023-12-18 23:22:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-18 23:22:36,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:36,265 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] [2023-12-18 23:22:36,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 23:22:36,265 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:36,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:36,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1777422384, now seen corresponding path program 1 times [2023-12-18 23:22:36,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:36,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964422460] [2023-12-18 23:22:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:36,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:36,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:36,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964422460] [2023-12-18 23:22:36,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964422460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:36,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:36,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:36,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055854354] [2023-12-18 23:22:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:36,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:36,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:36,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:36,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:36,308 INFO L87 Difference]: Start difference. First operand 834 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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) [2023-12-18 23:22:36,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:36,334 INFO L93 Difference]: Finished difference Result 943 states and 1725 transitions. [2023-12-18 23:22:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:36,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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 [2023-12-18 23:22:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:36,337 INFO L225 Difference]: With dead ends: 943 [2023-12-18 23:22:36,337 INFO L226 Difference]: Without dead ends: 883 [2023-12-18 23:22:36,337 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 [2023-12-18 23:22:36,338 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:36,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-12-18 23:22:36,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 879. [2023-12-18 23:22:36,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8494868871151653) internal successors, (1622), 878 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1622 transitions. [2023-12-18 23:22:36,349 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1622 transitions. Word has length 34 [2023-12-18 23:22:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:36,349 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1622 transitions. [2023-12-18 23:22:36,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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) [2023-12-18 23:22:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1622 transitions. [2023-12-18 23:22:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-18 23:22:36,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:36,351 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] [2023-12-18 23:22:36,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 23:22:36,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:36,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:36,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1775277432, now seen corresponding path program 1 times [2023-12-18 23:22:36,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:36,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742814795] [2023-12-18 23:22:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:36,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:36,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:36,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742814795] [2023-12-18 23:22:36,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742814795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:36,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:36,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:22:36,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518746359] [2023-12-18 23:22:36,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:36,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:22:36,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:36,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:22:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:22:36,454 INFO L87 Difference]: Start difference. First operand 879 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2023-12-18 23:22:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:36,511 INFO L93 Difference]: Finished difference Result 986 states and 1786 transitions. [2023-12-18 23:22:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:22:36,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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 [2023-12-18 23:22:36,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:36,514 INFO L225 Difference]: With dead ends: 986 [2023-12-18 23:22:36,515 INFO L226 Difference]: Without dead ends: 881 [2023-12-18 23:22:36,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:22:36,516 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 2948 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:36,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 1591 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-12-18 23:22:36,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2023-12-18 23:22:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2023-12-18 23:22:36,528 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 34 [2023-12-18 23:22:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:36,529 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2023-12-18 23:22:36,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2023-12-18 23:22:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2023-12-18 23:22:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-18 23:22:36,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:36,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:36,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 23:22:36,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:36,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:36,531 INFO L85 PathProgramCache]: Analyzing trace with hash 672590802, now seen corresponding path program 1 times [2023-12-18 23:22:36,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:36,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970705106] [2023-12-18 23:22:36,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:36,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:36,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:36,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970705106] [2023-12-18 23:22:36,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970705106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:36,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:36,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:22:36,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473682679] [2023-12-18 23:22:36,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:36,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:22:36,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:22:36,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:22:36,665 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:36,697 INFO L93 Difference]: Finished difference Result 887 states and 1629 transitions. [2023-12-18 23:22:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:22:36,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-18 23:22:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:36,700 INFO L225 Difference]: With dead ends: 887 [2023-12-18 23:22:36,700 INFO L226 Difference]: Without dead ends: 885 [2023-12-18 23:22:36,700 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 [2023-12-18 23:22:36,701 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:36,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:36,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-18 23:22:36,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2023-12-18 23:22:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8422247446083995) internal successors, (1623), 882 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1623 transitions. [2023-12-18 23:22:36,715 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1623 transitions. Word has length 35 [2023-12-18 23:22:36,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:36,716 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1623 transitions. [2023-12-18 23:22:36,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,716 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1623 transitions. [2023-12-18 23:22:36,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 23:22:36,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:36,717 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] [2023-12-18 23:22:36,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 23:22:36,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:36,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:36,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1662873624, now seen corresponding path program 1 times [2023-12-18 23:22:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:36,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021092558] [2023-12-18 23:22:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:36,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:36,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:36,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021092558] [2023-12-18 23:22:36,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021092558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:36,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:36,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:36,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342005162] [2023-12-18 23:22:36,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:36,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:36,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:36,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:36,745 INFO L87 Difference]: Start difference. First operand 883 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:36,769 INFO L93 Difference]: Finished difference Result 1085 states and 1923 transitions. [2023-12-18 23:22:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:36,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-18 23:22:36,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:36,773 INFO L225 Difference]: With dead ends: 1085 [2023-12-18 23:22:36,773 INFO L226 Difference]: Without dead ends: 976 [2023-12-18 23:22:36,773 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 [2023-12-18 23:22:36,774 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 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 [2023-12-18 23:22:36,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:36,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-18 23:22:36,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 974. [2023-12-18 23:22:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 972 states have (on average 1.8045267489711934) internal successors, (1754), 973 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1754 transitions. [2023-12-18 23:22:36,789 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1754 transitions. Word has length 36 [2023-12-18 23:22:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:36,790 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1754 transitions. [2023-12-18 23:22:36,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1754 transitions. [2023-12-18 23:22:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 23:22:36,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:36,791 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] [2023-12-18 23:22:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 23:22:36,791 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:36,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1743360232, now seen corresponding path program 1 times [2023-12-18 23:22:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421316565] [2023-12-18 23:22:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:36,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:36,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421316565] [2023-12-18 23:22:36,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421316565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:36,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:36,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:36,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9182342] [2023-12-18 23:22:36,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:36,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:36,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:36,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:36,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:36,817 INFO L87 Difference]: Start difference. First operand 974 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:36,843 INFO L93 Difference]: Finished difference Result 1342 states and 2288 transitions. [2023-12-18 23:22:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:36,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-18 23:22:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:36,847 INFO L225 Difference]: With dead ends: 1342 [2023-12-18 23:22:36,847 INFO L226 Difference]: Without dead ends: 1142 [2023-12-18 23:22:36,848 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 [2023-12-18 23:22:36,848 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 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 [2023-12-18 23:22:36,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:36,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2023-12-18 23:22:36,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1140. [2023-12-18 23:22:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 1.7434094903339192) internal successors, (1984), 1139 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1984 transitions. [2023-12-18 23:22:36,867 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1984 transitions. Word has length 36 [2023-12-18 23:22:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:36,867 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1984 transitions. [2023-12-18 23:22:36,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1984 transitions. [2023-12-18 23:22:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-18 23:22:36,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:36,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:36,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 23:22:36,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:36,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:36,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1790190323, now seen corresponding path program 1 times [2023-12-18 23:22:36,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:36,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003177552] [2023-12-18 23:22:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:36,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:36,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:36,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003177552] [2023-12-18 23:22:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003177552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:36,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:36,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:36,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824443799] [2023-12-18 23:22:36,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:36,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:36,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:36,894 INFO L87 Difference]: Start difference. First operand 1140 states and 1984 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:36,921 INFO L93 Difference]: Finished difference Result 1531 states and 2558 transitions. [2023-12-18 23:22:36,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:36,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-18 23:22:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:36,925 INFO L225 Difference]: With dead ends: 1531 [2023-12-18 23:22:36,925 INFO L226 Difference]: Without dead ends: 1312 [2023-12-18 23:22:36,926 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 [2023-12-18 23:22:36,926 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 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 [2023-12-18 23:22:36,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-12-18 23:22:36,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2023-12-18 23:22:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1308 states have (on average 1.698776758409786) internal successors, (2222), 1309 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2222 transitions. [2023-12-18 23:22:36,949 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2222 transitions. Word has length 38 [2023-12-18 23:22:36,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:36,949 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2222 transitions. [2023-12-18 23:22:36,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2222 transitions. [2023-12-18 23:22:36,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 23:22:36,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:36,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:36,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 23:22:36,950 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:36,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1801881872, now seen corresponding path program 1 times [2023-12-18 23:22:36,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:36,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260286732] [2023-12-18 23:22:36,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:36,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 23:22:37,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:37,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260286732] [2023-12-18 23:22:37,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260286732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:37,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:37,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:22:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776037085] [2023-12-18 23:22:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:37,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:22:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:22:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:22:37,051 INFO L87 Difference]: Start difference. First operand 1310 states and 2222 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:37,173 INFO L93 Difference]: Finished difference Result 3034 states and 4670 transitions. [2023-12-18 23:22:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:22:37,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-18 23:22:37,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:37,184 INFO L225 Difference]: With dead ends: 3034 [2023-12-18 23:22:37,184 INFO L226 Difference]: Without dead ends: 2500 [2023-12-18 23:22:37,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:22:37,187 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 3051 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:37,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3138 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:37,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2023-12-18 23:22:37,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1842. [2023-12-18 23:22:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1840 states have (on average 1.6141304347826086) internal successors, (2970), 1841 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2970 transitions. [2023-12-18 23:22:37,250 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2970 transitions. Word has length 50 [2023-12-18 23:22:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:37,250 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2970 transitions. [2023-12-18 23:22:37,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2970 transitions. [2023-12-18 23:22:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 23:22:37,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:37,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:37,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 23:22:37,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:37,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash 913148432, now seen corresponding path program 1 times [2023-12-18 23:22:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:37,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744217519] [2023-12-18 23:22:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 23:22:37,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:37,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744217519] [2023-12-18 23:22:37,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744217519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:37,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:37,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:22:37,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756343681] [2023-12-18 23:22:37,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:37,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:22:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:37,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:22:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:22:37,363 INFO L87 Difference]: Start difference. First operand 1842 states and 2970 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:37,490 INFO L93 Difference]: Finished difference Result 3566 states and 5418 transitions. [2023-12-18 23:22:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:22:37,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-18 23:22:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:37,500 INFO L225 Difference]: With dead ends: 3566 [2023-12-18 23:22:37,500 INFO L226 Difference]: Without dead ends: 3032 [2023-12-18 23:22:37,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:22:37,502 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 3043 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:37,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:22:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2023-12-18 23:22:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2642. [2023-12-18 23:22:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2640 states have (on average 1.5462121212121211) internal successors, (4082), 2641 states have internal predecessors, (4082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 4082 transitions. [2023-12-18 23:22:37,573 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 4082 transitions. Word has length 50 [2023-12-18 23:22:37,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:37,574 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 4082 transitions. [2023-12-18 23:22:37,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 4082 transitions. [2023-12-18 23:22:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-18 23:22:37,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:37,575 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] [2023-12-18 23:22:37,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 23:22:37,575 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:37,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash 615190968, now seen corresponding path program 1 times [2023-12-18 23:22:37,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:37,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989332877] [2023-12-18 23:22:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:37,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:37,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:37,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989332877] [2023-12-18 23:22:37,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989332877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:37,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:37,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:37,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432209424] [2023-12-18 23:22:37,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:37,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:37,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:37,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:37,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:37,633 INFO L87 Difference]: Start difference. First operand 2642 states and 4082 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:37,667 INFO L93 Difference]: Finished difference Result 4005 states and 6032 transitions. [2023-12-18 23:22:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:37,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-18 23:22:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:37,674 INFO L225 Difference]: With dead ends: 4005 [2023-12-18 23:22:37,675 INFO L226 Difference]: Without dead ends: 2139 [2023-12-18 23:22:37,677 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 [2023-12-18 23:22:37,678 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 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 [2023-12-18 23:22:37,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:37,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2023-12-18 23:22:37,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2023-12-18 23:22:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2135 states have (on average 1.5836065573770493) internal successors, (3381), 2136 states have internal predecessors, (3381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3381 transitions. [2023-12-18 23:22:37,741 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3381 transitions. Word has length 52 [2023-12-18 23:22:37,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:37,741 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 3381 transitions. [2023-12-18 23:22:37,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3381 transitions. [2023-12-18 23:22:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-18 23:22:37,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:37,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:37,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 23:22:37,742 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:37,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:37,742 INFO L85 PathProgramCache]: Analyzing trace with hash -759813067, now seen corresponding path program 1 times [2023-12-18 23:22:37,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:37,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449288542] [2023-12-18 23:22:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:37,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:22:37,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:37,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449288542] [2023-12-18 23:22:37,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449288542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:37,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:37,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:22:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551393670] [2023-12-18 23:22:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:37,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:22:37,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:37,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:22:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:22:37,816 INFO L87 Difference]: Start difference. First operand 2137 states and 3381 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:37,895 INFO L93 Difference]: Finished difference Result 3297 states and 5041 transitions. [2023-12-18 23:22:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:22:37,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-18 23:22:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:37,902 INFO L225 Difference]: With dead ends: 3297 [2023-12-18 23:22:37,902 INFO L226 Difference]: Without dead ends: 2911 [2023-12-18 23:22:37,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:22:37,904 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 3043 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:37,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3138 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:37,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2023-12-18 23:22:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2521. [2023-12-18 23:22:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 2519 states have (on average 1.5581579992060341) internal successors, (3925), 2520 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3925 transitions. [2023-12-18 23:22:37,947 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3925 transitions. Word has length 52 [2023-12-18 23:22:37,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:37,947 INFO L495 AbstractCegarLoop]: Abstraction has 2521 states and 3925 transitions. [2023-12-18 23:22:37,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3925 transitions. [2023-12-18 23:22:37,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-18 23:22:37,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:37,948 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] [2023-12-18 23:22:37,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 23:22:37,948 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:37,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:37,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1640470092, now seen corresponding path program 1 times [2023-12-18 23:22:37,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:37,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525578003] [2023-12-18 23:22:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:37,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:38,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525578003] [2023-12-18 23:22:38,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525578003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:38,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:38,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:38,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38430173] [2023-12-18 23:22:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:38,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:38,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:38,012 INFO L87 Difference]: Start difference. First operand 2521 states and 3925 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:38,041 INFO L93 Difference]: Finished difference Result 3389 states and 5151 transitions. [2023-12-18 23:22:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-18 23:22:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:38,045 INFO L225 Difference]: With dead ends: 3389 [2023-12-18 23:22:38,046 INFO L226 Difference]: Without dead ends: 1659 [2023-12-18 23:22:38,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:38,047 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 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 [2023-12-18 23:22:38,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2023-12-18 23:22:38,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1657. [2023-12-18 23:22:38,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1655 states have (on average 1.6211480362537765) internal successors, (2683), 1656 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:38,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2683 transitions. [2023-12-18 23:22:38,073 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2683 transitions. Word has length 53 [2023-12-18 23:22:38,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:38,073 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 2683 transitions. [2023-12-18 23:22:38,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2683 transitions. [2023-12-18 23:22:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-18 23:22:38,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:38,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:38,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 23:22:38,074 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:38,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:38,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1012299426, now seen corresponding path program 1 times [2023-12-18 23:22:38,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:38,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458894678] [2023-12-18 23:22:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:38,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:38,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:38,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458894678] [2023-12-18 23:22:38,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458894678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:38,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:38,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148612278] [2023-12-18 23:22:38,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:38,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:38,136 INFO L87 Difference]: Start difference. First operand 1657 states and 2683 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:38,158 INFO L93 Difference]: Finished difference Result 2093 states and 3288 transitions. [2023-12-18 23:22:38,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:38,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-18 23:22:38,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:38,161 INFO L225 Difference]: With dead ends: 2093 [2023-12-18 23:22:38,161 INFO L226 Difference]: Without dead ends: 1227 [2023-12-18 23:22:38,163 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 [2023-12-18 23:22:38,163 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 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 [2023-12-18 23:22:38,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2023-12-18 23:22:38,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1225. [2023-12-18 23:22:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1223 states have (on average 1.6933769419460343) internal successors, (2071), 1224 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2071 transitions. [2023-12-18 23:22:38,181 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2071 transitions. Word has length 55 [2023-12-18 23:22:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:38,181 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 2071 transitions. [2023-12-18 23:22:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2071 transitions. [2023-12-18 23:22:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-18 23:22:38,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:38,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:38,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 23:22:38,182 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:38,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:38,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1129129232, now seen corresponding path program 1 times [2023-12-18 23:22:38,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:38,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371396246] [2023-12-18 23:22:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:40,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:40,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371396246] [2023-12-18 23:22:40,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371396246] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:40,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933093921] [2023-12-18 23:22:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:40,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:40,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:40,012 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) [2023-12-18 23:22:40,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 23:22:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:40,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-18 23:22:40,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:22:40,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:22:40,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933093921] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:40,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:40,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-18 23:22:40,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300893513] [2023-12-18 23:22:40,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:40,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 23:22:40,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:40,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 23:22:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-18 23:22:40,403 INFO L87 Difference]: Start difference. First operand 1225 states and 2071 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 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) [2023-12-18 23:22:42,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:42,911 INFO L93 Difference]: Finished difference Result 3468 states and 5019 transitions. [2023-12-18 23:22:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-18 23:22:42,912 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 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) Word has length 57 [2023-12-18 23:22:42,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:42,919 INFO L225 Difference]: With dead ends: 3468 [2023-12-18 23:22:42,920 INFO L226 Difference]: Without dead ends: 3034 [2023-12-18 23:22:42,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 23:22:42,922 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 15532 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15532 SdHoareTripleChecker+Valid, 6234 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:42,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15532 Valid, 6234 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 23:22:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2023-12-18 23:22:43,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 2846. [2023-12-18 23:22:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2846 states, 2844 states have (on average 1.4388185654008439) internal successors, (4092), 2845 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 4092 transitions. [2023-12-18 23:22:43,068 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 4092 transitions. Word has length 57 [2023-12-18 23:22:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:43,068 INFO L495 AbstractCegarLoop]: Abstraction has 2846 states and 4092 transitions. [2023-12-18 23:22:43,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 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) [2023-12-18 23:22:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 4092 transitions. [2023-12-18 23:22:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-18 23:22:43,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:43,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:43,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:43,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-18 23:22:43,275 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:43,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1944087233, now seen corresponding path program 1 times [2023-12-18 23:22:43,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:43,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422362385] [2023-12-18 23:22:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:43,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:44,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:44,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422362385] [2023-12-18 23:22:44,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422362385] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:44,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704115486] [2023-12-18 23:22:44,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:44,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:44,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:44,021 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) [2023-12-18 23:22:44,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 23:22:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:44,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:22:44,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:44,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:45,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704115486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:45,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:45,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-12-18 23:22:45,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961812206] [2023-12-18 23:22:45,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:45,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 23:22:45,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:45,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 23:22:45,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-12-18 23:22:45,202 INFO L87 Difference]: Start difference. First operand 2846 states and 4092 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:46,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:46,082 INFO L93 Difference]: Finished difference Result 6964 states and 9282 transitions. [2023-12-18 23:22:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-18 23:22:46,082 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-18 23:22:46,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:46,098 INFO L225 Difference]: With dead ends: 6964 [2023-12-18 23:22:46,098 INFO L226 Difference]: Without dead ends: 5186 [2023-12-18 23:22:46,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 23:22:46,102 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 19428 mSDsluCounter, 7733 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19428 SdHoareTripleChecker+Valid, 9226 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:46,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19428 Valid, 9226 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 23:22:46,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2023-12-18 23:22:46,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 4800. [2023-12-18 23:22:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4800 states, 4798 states have (on average 1.353897457273864) internal successors, (6496), 4799 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 6496 transitions. [2023-12-18 23:22:46,228 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 6496 transitions. Word has length 58 [2023-12-18 23:22:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:46,228 INFO L495 AbstractCegarLoop]: Abstraction has 4800 states and 6496 transitions. [2023-12-18 23:22:46,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 6496 transitions. [2023-12-18 23:22:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-18 23:22:46,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:46,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:46,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:46,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-18 23:22:46,438 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:46,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1421483023, now seen corresponding path program 1 times [2023-12-18 23:22:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504815265] [2023-12-18 23:22:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:46,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:46,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504815265] [2023-12-18 23:22:46,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504815265] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:46,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694278392] [2023-12-18 23:22:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:46,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:46,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:46,640 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) [2023-12-18 23:22:46,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 23:22:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:46,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:22:46,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:47,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:47,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694278392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:47,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:47,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-18 23:22:47,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699250665] [2023-12-18 23:22:47,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:47,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 23:22:47,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:47,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 23:22:47,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-18 23:22:47,668 INFO L87 Difference]: Start difference. First operand 4800 states and 6496 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:48,318 INFO L93 Difference]: Finished difference Result 11761 states and 15192 transitions. [2023-12-18 23:22:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-18 23:22:48,319 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-18 23:22:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:48,329 INFO L225 Difference]: With dead ends: 11761 [2023-12-18 23:22:48,329 INFO L226 Difference]: Without dead ends: 8339 [2023-12-18 23:22:48,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-12-18 23:22:48,333 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 10583 mSDsluCounter, 6230 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10583 SdHoareTripleChecker+Valid, 7722 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:48,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10583 Valid, 7722 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:22:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8339 states. [2023-12-18 23:22:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8339 to 8101. [2023-12-18 23:22:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8101 states, 8099 states have (on average 1.3080627237930609) internal successors, (10594), 8100 states have internal predecessors, (10594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8101 states to 8101 states and 10594 transitions. [2023-12-18 23:22:48,522 INFO L78 Accepts]: Start accepts. Automaton has 8101 states and 10594 transitions. Word has length 58 [2023-12-18 23:22:48,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:48,522 INFO L495 AbstractCegarLoop]: Abstraction has 8101 states and 10594 transitions. [2023-12-18 23:22:48,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:48,522 INFO L276 IsEmpty]: Start isEmpty. Operand 8101 states and 10594 transitions. [2023-12-18 23:22:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-18 23:22:48,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:48,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:48,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:48,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-18 23:22:48,728 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:48,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:48,728 INFO L85 PathProgramCache]: Analyzing trace with hash -547926257, now seen corresponding path program 1 times [2023-12-18 23:22:48,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:48,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84541757] [2023-12-18 23:22:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:48,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:48,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84541757] [2023-12-18 23:22:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84541757] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438929311] [2023-12-18 23:22:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:48,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:48,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:49,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 23:22:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:49,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:22:49,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:49,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:50,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438929311] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:50,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:50,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-18 23:22:50,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122311774] [2023-12-18 23:22:50,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:50,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 23:22:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 23:22:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-18 23:22:50,042 INFO L87 Difference]: Start difference. First operand 8101 states and 10594 transitions. Second operand has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:50,749 INFO L93 Difference]: Finished difference Result 14996 states and 19202 transitions. [2023-12-18 23:22:50,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 23:22:50,749 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-18 23:22:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:50,760 INFO L225 Difference]: With dead ends: 14996 [2023-12-18 23:22:50,761 INFO L226 Difference]: Without dead ends: 8795 [2023-12-18 23:22:50,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 23:22:50,766 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 15031 mSDsluCounter, 4775 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15031 SdHoareTripleChecker+Valid, 6275 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:50,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15031 Valid, 6275 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:22:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2023-12-18 23:22:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 8213. [2023-12-18 23:22:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8213 states, 8211 states have (on average 1.2952137376689807) internal successors, (10635), 8212 states have internal predecessors, (10635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8213 states to 8213 states and 10635 transitions. [2023-12-18 23:22:50,967 INFO L78 Accepts]: Start accepts. Automaton has 8213 states and 10635 transitions. Word has length 58 [2023-12-18 23:22:50,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:50,967 INFO L495 AbstractCegarLoop]: Abstraction has 8213 states and 10635 transitions. [2023-12-18 23:22:50,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 8213 states and 10635 transitions. [2023-12-18 23:22:50,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-18 23:22:50,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:50,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:50,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:51,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:51,174 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:51,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:51,175 INFO L85 PathProgramCache]: Analyzing trace with hash 521807150, now seen corresponding path program 1 times [2023-12-18 23:22:51,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:51,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836030569] [2023-12-18 23:22:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:51,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:51,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:51,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836030569] [2023-12-18 23:22:51,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836030569] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:51,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23113884] [2023-12-18 23:22:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:51,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:51,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:51,707 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:51,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 23:22:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:51,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-18 23:22:51,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:52,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:53,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23113884] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:53,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:53,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-12-18 23:22:53,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505415712] [2023-12-18 23:22:53,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:53,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-18 23:22:53,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:53,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-18 23:22:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-18 23:22:53,176 INFO L87 Difference]: Start difference. First operand 8213 states and 10635 transitions. Second operand has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:57,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:57,736 INFO L93 Difference]: Finished difference Result 15073 states and 19120 transitions. [2023-12-18 23:22:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-18 23:22:57,737 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-18 23:22:57,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:57,751 INFO L225 Difference]: With dead ends: 15073 [2023-12-18 23:22:57,751 INFO L226 Difference]: Without dead ends: 10305 [2023-12-18 23:22:57,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2207, Invalid=9135, Unknown=0, NotChecked=0, Total=11342 [2023-12-18 23:22:57,757 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 14987 mSDsluCounter, 19970 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14987 SdHoareTripleChecker+Valid, 21483 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:57,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14987 Valid, 21483 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 23:22:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10305 states. [2023-12-18 23:22:57,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10305 to 5611. [2023-12-18 23:22:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5611 states, 5609 states have (on average 1.3207345337849885) internal successors, (7408), 5610 states have internal predecessors, (7408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5611 states to 5611 states and 7408 transitions. [2023-12-18 23:22:57,928 INFO L78 Accepts]: Start accepts. Automaton has 5611 states and 7408 transitions. Word has length 59 [2023-12-18 23:22:57,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:57,929 INFO L495 AbstractCegarLoop]: Abstraction has 5611 states and 7408 transitions. [2023-12-18 23:22:57,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:57,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5611 states and 7408 transitions. [2023-12-18 23:22:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-18 23:22:57,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:57,929 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] [2023-12-18 23:22:57,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:58,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:58,134 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:58,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:58,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1301279960, now seen corresponding path program 1 times [2023-12-18 23:22:58,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:58,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463115484] [2023-12-18 23:22:58,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:58,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:58,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:58,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463115484] [2023-12-18 23:22:58,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463115484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:58,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:58,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:58,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609865218] [2023-12-18 23:22:58,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:58,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:22:58,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:22:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:22:58,222 INFO L87 Difference]: Start difference. First operand 5611 states and 7408 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:23:03,242 INFO L93 Difference]: Finished difference Result 7866 states and 11717 transitions. [2023-12-18 23:23:03,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:23:03,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-18 23:23:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:23:03,251 INFO L225 Difference]: With dead ends: 7866 [2023-12-18 23:23:03,251 INFO L226 Difference]: Without dead ends: 7113 [2023-12-18 23:23:03,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:23:03,252 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 2320 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-18 23:23:03,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2320 Valid, 777 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-18 23:23:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2023-12-18 23:23:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 7113. [2023-12-18 23:23:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7113 states, 7111 states have (on average 1.3407396990577978) internal successors, (9534), 7112 states have internal predecessors, (9534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 9534 transitions. [2023-12-18 23:23:03,442 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 9534 transitions. Word has length 59 [2023-12-18 23:23:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:23:03,442 INFO L495 AbstractCegarLoop]: Abstraction has 7113 states and 9534 transitions. [2023-12-18 23:23:03,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 9534 transitions. [2023-12-18 23:23:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-18 23:23:03,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:23:03,443 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:23:03,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-18 23:23:03,443 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:23:03,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:23:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash 266400177, now seen corresponding path program 1 times [2023-12-18 23:23:03,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:23:03,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074253509] [2023-12-18 23:23:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:03,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:23:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:03,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:23:03,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074253509] [2023-12-18 23:23:03,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074253509] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:23:03,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500609884] [2023-12-18 23:23:03,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:03,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:03,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:23:03,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:23:03,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 23:23:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:04,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-18 23:23:04,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:23:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:04,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:23:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:05,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500609884] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:23:05,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:23:05,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2023-12-18 23:23:05,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188271435] [2023-12-18 23:23:05,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:23:05,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 23:23:05,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:23:05,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 23:23:05,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-12-18 23:23:05,394 INFO L87 Difference]: Start difference. First operand 7113 states and 9534 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:06,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:23:06,695 INFO L93 Difference]: Finished difference Result 8443 states and 11178 transitions. [2023-12-18 23:23:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 23:23:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-18 23:23:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:23:06,704 INFO L225 Difference]: With dead ends: 8443 [2023-12-18 23:23:06,704 INFO L226 Difference]: Without dead ends: 5839 [2023-12-18 23:23:06,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=533, Invalid=1819, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 23:23:06,709 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 11171 mSDsluCounter, 13366 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11171 SdHoareTripleChecker+Valid, 14859 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:23:06,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11171 Valid, 14859 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 23:23:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5839 states. [2023-12-18 23:23:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5839 to 5735. [2023-12-18 23:23:06,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5735 states, 5733 states have (on average 1.366125937554509) internal successors, (7832), 5734 states have internal predecessors, (7832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5735 states to 5735 states and 7832 transitions. [2023-12-18 23:23:06,907 INFO L78 Accepts]: Start accepts. Automaton has 5735 states and 7832 transitions. Word has length 60 [2023-12-18 23:23:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:23:06,907 INFO L495 AbstractCegarLoop]: Abstraction has 5735 states and 7832 transitions. [2023-12-18 23:23:06,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5735 states and 7832 transitions. [2023-12-18 23:23:06,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:23:06,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:23:06,909 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:23:06,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-18 23:23:07,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:07,116 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:23:07,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:23:07,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1950336645, now seen corresponding path program 1 times [2023-12-18 23:23:07,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:23:07,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655676916] [2023-12-18 23:23:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:07,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:23:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:07,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:23:07,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655676916] [2023-12-18 23:23:07,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655676916] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:23:07,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310938034] [2023-12-18 23:23:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:07,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:07,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:23:07,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:23:07,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 23:23:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:07,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 23:23:07,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:23:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:08,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:23:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:09,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310938034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:23:09,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:23:09,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-18 23:23:09,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663694587] [2023-12-18 23:23:09,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:23:09,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-18 23:23:09,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:23:09,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-18 23:23:09,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-12-18 23:23:09,706 INFO L87 Difference]: Start difference. First operand 5735 states and 7832 transitions. Second operand has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:23:20,038 INFO L93 Difference]: Finished difference Result 12963 states and 16862 transitions. [2023-12-18 23:23:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-18 23:23:20,039 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-18 23:23:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:23:20,049 INFO L225 Difference]: With dead ends: 12963 [2023-12-18 23:23:20,049 INFO L226 Difference]: Without dead ends: 10277 [2023-12-18 23:23:20,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10828 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=4645, Invalid=27575, Unknown=0, NotChecked=0, Total=32220 [2023-12-18 23:23:20,059 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 30325 mSDsluCounter, 19217 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30325 SdHoareTripleChecker+Valid, 20758 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:23:20,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30325 Valid, 20758 Invalid, 2213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 23:23:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10277 states. [2023-12-18 23:23:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10277 to 7981. [2023-12-18 23:23:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7981 states, 7979 states have (on average 1.325479383381376) internal successors, (10576), 7980 states have internal predecessors, (10576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:20,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7981 states to 7981 states and 10576 transitions. [2023-12-18 23:23:20,380 INFO L78 Accepts]: Start accepts. Automaton has 7981 states and 10576 transitions. Word has length 97 [2023-12-18 23:23:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:23:20,381 INFO L495 AbstractCegarLoop]: Abstraction has 7981 states and 10576 transitions. [2023-12-18 23:23:20,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:20,381 INFO L276 IsEmpty]: Start isEmpty. Operand 7981 states and 10576 transitions. [2023-12-18 23:23:20,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:23:20,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:23:20,382 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:23:20,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 23:23:20,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:20,587 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:23:20,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:23:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash 933577673, now seen corresponding path program 1 times [2023-12-18 23:23:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:23:20,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809731209] [2023-12-18 23:23:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:23:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:21,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:23:21,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809731209] [2023-12-18 23:23:21,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809731209] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:23:21,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652555024] [2023-12-18 23:23:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:21,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:21,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:23:21,110 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:23:21,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 23:23:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:21,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-18 23:23:21,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:23:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:23,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:23:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:31,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652555024] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:23:31,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:23:31,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 25] total 60 [2023-12-18 23:23:31,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760906786] [2023-12-18 23:23:31,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:23:31,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-18 23:23:31,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:23:31,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-18 23:23:31,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3109, Unknown=0, NotChecked=0, Total=3540 [2023-12-18 23:23:31,423 INFO L87 Difference]: Start difference. First operand 7981 states and 10576 transitions. Second operand has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:24:06,022 INFO L93 Difference]: Finished difference Result 21762 states and 27454 transitions. [2023-12-18 23:24:06,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2023-12-18 23:24:06,022 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-18 23:24:06,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:24:06,041 INFO L225 Difference]: With dead ends: 21762 [2023-12-18 23:24:06,041 INFO L226 Difference]: Without dead ends: 17703 [2023-12-18 23:24:06,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58781 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=17856, Invalid=124650, Unknown=0, NotChecked=0, Total=142506 [2023-12-18 23:24:06,063 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 25442 mSDsluCounter, 31856 mSDsCounter, 0 mSdLazyCounter, 3381 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25442 SdHoareTripleChecker+Valid, 33449 SdHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 3381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:24:06,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25442 Valid, 33449 Invalid, 3711 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [330 Valid, 3381 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 23:24:06,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17703 states. [2023-12-18 23:24:06,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17703 to 8910. [2023-12-18 23:24:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8910 states, 8908 states have (on average 1.3056802873821285) internal successors, (11631), 8909 states have internal predecessors, (11631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:06,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8910 states to 8910 states and 11631 transitions. [2023-12-18 23:24:06,526 INFO L78 Accepts]: Start accepts. Automaton has 8910 states and 11631 transitions. Word has length 97 [2023-12-18 23:24:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:24:06,527 INFO L495 AbstractCegarLoop]: Abstraction has 8910 states and 11631 transitions. [2023-12-18 23:24:06,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:06,527 INFO L276 IsEmpty]: Start isEmpty. Operand 8910 states and 11631 transitions. [2023-12-18 23:24:06,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-18 23:24:06,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:24:06,528 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-18 23:24:06,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-18 23:24:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-18 23:24:06,733 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:24:06,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:24:06,734 INFO L85 PathProgramCache]: Analyzing trace with hash -237249868, now seen corresponding path program 1 times [2023-12-18 23:24:06,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:24:06,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170961961] [2023-12-18 23:24:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:06,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:24:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-18 23:24:07,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:24:07,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170961961] [2023-12-18 23:24:07,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170961961] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:24:07,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953671508] [2023-12-18 23:24:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:07,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:24:07,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:24:07,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:24:07,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 23:24:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:07,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-18 23:24:07,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:24:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:08,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:24:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:11,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953671508] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:24:11,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:24:11,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2023-12-18 23:24:11,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781790814] [2023-12-18 23:24:11,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:24:11,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-18 23:24:11,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:24:11,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-18 23:24:11,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2023-12-18 23:24:11,645 INFO L87 Difference]: Start difference. First operand 8910 states and 11631 transitions. Second operand has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:24:34,957 INFO L93 Difference]: Finished difference Result 14991 states and 18877 transitions. [2023-12-18 23:24:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-12-18 23:24:34,957 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-18 23:24:34,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:24:34,968 INFO L225 Difference]: With dead ends: 14991 [2023-12-18 23:24:34,968 INFO L226 Difference]: Without dead ends: 12283 [2023-12-18 23:24:34,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16843 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=7233, Invalid=43617, Unknown=0, NotChecked=0, Total=50850 [2023-12-18 23:24:34,973 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 29608 mSDsluCounter, 30144 mSDsCounter, 0 mSdLazyCounter, 4077 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29608 SdHoareTripleChecker+Valid, 31817 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 4077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-18 23:24:34,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29608 Valid, 31817 Invalid, 4396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [319 Valid, 4077 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-18 23:24:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12283 states. [2023-12-18 23:24:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12283 to 9300. [2023-12-18 23:24:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9300 states, 9298 states have (on average 1.299204129920413) internal successors, (12080), 9299 states have internal predecessors, (12080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:35,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9300 states to 9300 states and 12080 transitions. [2023-12-18 23:24:35,529 INFO L78 Accepts]: Start accepts. Automaton has 9300 states and 12080 transitions. Word has length 98 [2023-12-18 23:24:35,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:24:35,529 INFO L495 AbstractCegarLoop]: Abstraction has 9300 states and 12080 transitions. [2023-12-18 23:24:35,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 9300 states and 12080 transitions. [2023-12-18 23:24:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-18 23:24:35,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:24:35,531 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:24:35,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 23:24:35,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-18 23:24:35,736 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:24:35,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:24:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1927036061, now seen corresponding path program 1 times [2023-12-18 23:24:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:24:35,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678386288] [2023-12-18 23:24:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:35,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:24:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:24:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678386288] [2023-12-18 23:24:36,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678386288] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:24:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106425631] [2023-12-18 23:24:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:36,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:24:36,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:24:36,452 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:24:36,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 23:24:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:36,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-18 23:24:36,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:24:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:38,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:24:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:41,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106425631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:24:41,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:24:41,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 21] total 58 [2023-12-18 23:24:41,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987107034] [2023-12-18 23:24:41,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:24:41,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-18 23:24:41,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:24:41,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-18 23:24:41,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2951, Unknown=0, NotChecked=0, Total=3306 [2023-12-18 23:24:41,874 INFO L87 Difference]: Start difference. First operand 9300 states and 12080 transitions. Second operand has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:25:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:25:23,948 INFO L93 Difference]: Finished difference Result 22622 states and 28208 transitions. [2023-12-18 23:25:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2023-12-18 23:25:23,949 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-18 23:25:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:25:23,966 INFO L225 Difference]: With dead ends: 22622 [2023-12-18 23:25:23,966 INFO L226 Difference]: Without dead ends: 20753 [2023-12-18 23:25:23,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48263 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=15068, Invalid=104302, Unknown=0, NotChecked=0, Total=119370 [2023-12-18 23:25:23,973 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 31143 mSDsluCounter, 31053 mSDsCounter, 0 mSdLazyCounter, 3641 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31143 SdHoareTripleChecker+Valid, 32686 SdHoareTripleChecker+Invalid, 3921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 3641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:25:23,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31143 Valid, 32686 Invalid, 3921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [280 Valid, 3641 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-18 23:25:23,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20753 states. [2023-12-18 23:25:25,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20753 to 18642. [2023-12-18 23:25:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18642 states, 18640 states have (on average 1.261802575107296) internal successors, (23520), 18641 states have internal predecessors, (23520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:25:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18642 states to 18642 states and 23520 transitions. [2023-12-18 23:25:25,420 INFO L78 Accepts]: Start accepts. Automaton has 18642 states and 23520 transitions. Word has length 99 [2023-12-18 23:25:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:25:25,420 INFO L495 AbstractCegarLoop]: Abstraction has 18642 states and 23520 transitions. [2023-12-18 23:25:25,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:25:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 18642 states and 23520 transitions. [2023-12-18 23:25:25,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-18 23:25:25,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:25:25,422 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:25:25,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 23:25:25,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-18 23:25:25,628 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:25:25,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:25:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1042354079, now seen corresponding path program 1 times [2023-12-18 23:25:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:25:25,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636417437] [2023-12-18 23:25:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:25:25,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:25:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:25:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:25:27,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:25:27,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636417437] [2023-12-18 23:25:27,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636417437] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:25:27,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468518902] [2023-12-18 23:25:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:25:27,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:25:27,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:25:27,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:25:27,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 23:25:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:25:27,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-18 23:25:27,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:25:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:25:28,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:25:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:25:35,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468518902] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:25:35,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:25:35,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 21] total 63 [2023-12-18 23:25:35,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962040306] [2023-12-18 23:25:35,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:25:35,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-18 23:25:35,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:25:35,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-18 23:25:35,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=3568, Unknown=0, NotChecked=0, Total=3906 [2023-12-18 23:25:35,227 INFO L87 Difference]: Start difference. First operand 18642 states and 23520 transitions. Second operand has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:28:21,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:28:21,342 INFO L93 Difference]: Finished difference Result 57693 states and 70739 transitions. [2023-12-18 23:28:21,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 500 states. [2023-12-18 23:28:21,342 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-18 23:28:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:28:21,394 INFO L225 Difference]: With dead ends: 57693 [2023-12-18 23:28:21,395 INFO L226 Difference]: Without dead ends: 49729 [2023-12-18 23:28:21,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131286 ImplicationChecksByTransitivity, 155.4s TimeCoverageRelationStatistics Valid=38252, Invalid=272554, Unknown=0, NotChecked=0, Total=310806 [2023-12-18 23:28:21,417 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 28008 mSDsluCounter, 37106 mSDsCounter, 0 mSdLazyCounter, 7593 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28008 SdHoareTripleChecker+Valid, 38759 SdHoareTripleChecker+Invalid, 8088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 7593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:28:21,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28008 Valid, 38759 Invalid, 8088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [495 Valid, 7593 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-18 23:28:21,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49729 states. [2023-12-18 23:28:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49729 to 26379. [2023-12-18 23:28:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26379 states, 26377 states have (on average 1.2474125184820108) internal successors, (32903), 26378 states have internal predecessors, (32903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:28:24,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26379 states to 26379 states and 32903 transitions. [2023-12-18 23:28:24,159 INFO L78 Accepts]: Start accepts. Automaton has 26379 states and 32903 transitions. Word has length 99 [2023-12-18 23:28:24,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:28:24,159 INFO L495 AbstractCegarLoop]: Abstraction has 26379 states and 32903 transitions. [2023-12-18 23:28:24,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:28:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 26379 states and 32903 transitions. [2023-12-18 23:28:24,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-18 23:28:24,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:28:24,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:28:24,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-18 23:28:24,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-18 23:28:24,365 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:28:24,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:28:24,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1115210756, now seen corresponding path program 1 times [2023-12-18 23:28:24,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:28:24,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039629168] [2023-12-18 23:28:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:28:24,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:28:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:28:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:25,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:28:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039629168] [2023-12-18 23:28:25,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039629168] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:28:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160146596] [2023-12-18 23:28:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:28:25,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:28:25,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:28:25,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:28:25,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 23:28:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:28:25,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-18 23:28:25,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:28:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:27,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:28:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:29,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160146596] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:28:29,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:28:29,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 62 [2023-12-18 23:28:29,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630499398] [2023-12-18 23:28:29,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:28:29,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-18 23:28:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:28:29,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-18 23:28:29,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=3410, Unknown=0, NotChecked=0, Total=3782 [2023-12-18 23:28:29,911 INFO L87 Difference]: Start difference. First operand 26379 states and 32903 transitions. Second operand has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:28:52,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:28:52,076 INFO L93 Difference]: Finished difference Result 39248 states and 48182 transitions. [2023-12-18 23:28:52,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-18 23:28:52,076 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 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 100 [2023-12-18 23:28:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:28:52,108 INFO L225 Difference]: With dead ends: 39248 [2023-12-18 23:28:52,108 INFO L226 Difference]: Without dead ends: 34736 [2023-12-18 23:28:52,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12040 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=5036, Invalid=33576, Unknown=0, NotChecked=0, Total=38612 [2023-12-18 23:28:52,116 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 24433 mSDsluCounter, 32931 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24433 SdHoareTripleChecker+Valid, 34476 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:28:52,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24433 Valid, 34476 Invalid, 2730 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [152 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 23:28:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34736 states. [2023-12-18 23:28:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34736 to 29228. [2023-12-18 23:28:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29228 states, 29226 states have (on average 1.2438924245534797) internal successors, (36354), 29227 states have internal predecessors, (36354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:28:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29228 states to 29228 states and 36354 transitions. [2023-12-18 23:28:55,334 INFO L78 Accepts]: Start accepts. Automaton has 29228 states and 36354 transitions. Word has length 100 [2023-12-18 23:28:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:28:55,334 INFO L495 AbstractCegarLoop]: Abstraction has 29228 states and 36354 transitions. [2023-12-18 23:28:55,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:28:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 29228 states and 36354 transitions. [2023-12-18 23:28:55,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-18 23:28:55,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:28:55,342 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:28:55,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 23:28:55,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-18 23:28:55,547 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:28:55,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:28:55,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1530746744, now seen corresponding path program 1 times [2023-12-18 23:28:55,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:28:55,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443903150] [2023-12-18 23:28:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:28:55,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:28:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:28:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:56,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:28:56,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443903150] [2023-12-18 23:28:56,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443903150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:28:56,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811914615] [2023-12-18 23:28:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:28:56,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:28:56,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:28:56,359 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:28:56,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 23:28:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:28:56,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-18 23:28:56,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:28:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:58,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:29:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:01,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811914615] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:29:01,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:29:01,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 19] total 60 [2023-12-18 23:29:01,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670592475] [2023-12-18 23:29:01,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:29:01,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-18 23:29:01,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:29:01,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-18 23:29:01,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3170, Unknown=0, NotChecked=0, Total=3540 [2023-12-18 23:29:01,638 INFO L87 Difference]: Start difference. First operand 29228 states and 36354 transitions. Second operand has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:29:39,365 INFO L93 Difference]: Finished difference Result 48306 states and 59390 transitions. [2023-12-18 23:29:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-18 23:29:39,365 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-18 23:29:39,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:29:39,402 INFO L225 Difference]: With dead ends: 48306 [2023-12-18 23:29:39,402 INFO L226 Difference]: Without dead ends: 41756 [2023-12-18 23:29:39,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22381 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=9415, Invalid=56377, Unknown=0, NotChecked=0, Total=65792 [2023-12-18 23:29:39,413 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 16113 mSDsluCounter, 26959 mSDsCounter, 0 mSdLazyCounter, 2864 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16113 SdHoareTripleChecker+Valid, 28529 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-18 23:29:39,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16113 Valid, 28529 Invalid, 3084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [220 Valid, 2864 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-18 23:29:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41756 states. [2023-12-18 23:29:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41756 to 35838. [2023-12-18 23:29:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35838 states, 35836 states have (on average 1.2372474606540909) internal successors, (44338), 35837 states have internal predecessors, (44338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35838 states to 35838 states and 44338 transitions. [2023-12-18 23:29:43,781 INFO L78 Accepts]: Start accepts. Automaton has 35838 states and 44338 transitions. Word has length 100 [2023-12-18 23:29:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:29:43,781 INFO L495 AbstractCegarLoop]: Abstraction has 35838 states and 44338 transitions. [2023-12-18 23:29:43,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 35838 states and 44338 transitions. [2023-12-18 23:29:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-18 23:29:43,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:29:43,783 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:29:43,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 23:29:43,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-18 23:29:43,988 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:29:43,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:29:43,988 INFO L85 PathProgramCache]: Analyzing trace with hash 977729156, now seen corresponding path program 1 times [2023-12-18 23:29:43,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:29:43,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168080202] [2023-12-18 23:29:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:29:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:29:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:29:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:44,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:29:44,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168080202] [2023-12-18 23:29:44,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168080202] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:29:44,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059473017] [2023-12-18 23:29:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:29:44,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:29:44,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:29:44,703 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:29:44,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 23:29:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:29:44,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-18 23:29:44,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:29:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:47,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:29:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:50,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059473017] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:29:50,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:29:50,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 21] total 60 [2023-12-18 23:29:50,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39640268] [2023-12-18 23:29:50,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:29:50,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-18 23:29:50,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:29:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-18 23:29:50,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3232, Unknown=0, NotChecked=0, Total=3540 [2023-12-18 23:29:50,321 INFO L87 Difference]: Start difference. First operand 35838 states and 44338 transitions. Second operand has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:30:10,532 INFO L93 Difference]: Finished difference Result 54826 states and 67047 transitions. [2023-12-18 23:30:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-18 23:30:10,533 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 states have internal predecessors, (262), 0 states have call successors, (0), 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 100 [2023-12-18 23:30:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:30:10,583 INFO L225 Difference]: With dead ends: 54826 [2023-12-18 23:30:10,583 INFO L226 Difference]: Without dead ends: 48630 [2023-12-18 23:30:10,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=4981, Invalid=26881, Unknown=0, NotChecked=0, Total=31862 [2023-12-18 23:30:10,596 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 22432 mSDsluCounter, 39193 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22432 SdHoareTripleChecker+Valid, 40758 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-18 23:30:10,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22432 Valid, 40758 Invalid, 3080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [150 Valid, 2930 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-18 23:30:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48630 states. [2023-12-18 23:30:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48630 to 35667. [2023-12-18 23:30:15,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35667 states, 35665 states have (on average 1.237487733071639) internal successors, (44135), 35666 states have internal predecessors, (44135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35667 states to 35667 states and 44135 transitions. [2023-12-18 23:30:15,125 INFO L78 Accepts]: Start accepts. Automaton has 35667 states and 44135 transitions. Word has length 100 [2023-12-18 23:30:15,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:30:15,125 INFO L495 AbstractCegarLoop]: Abstraction has 35667 states and 44135 transitions. [2023-12-18 23:30:15,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:15,126 INFO L276 IsEmpty]: Start isEmpty. Operand 35667 states and 44135 transitions. [2023-12-18 23:30:15,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-18 23:30:15,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:30:15,127 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:30:15,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-18 23:30:15,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:30:15,333 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:30:15,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:30:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash -724713393, now seen corresponding path program 1 times [2023-12-18 23:30:15,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:30:15,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413034226] [2023-12-18 23:30:15,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:30:15,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:30:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:30:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:15,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:30:15,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413034226] [2023-12-18 23:30:15,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413034226] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:30:15,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824672250] [2023-12-18 23:30:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:30:15,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:30:15,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:30:15,752 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:30:15,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 23:30:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:30:15,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:30:15,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:30:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:16,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:30:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:17,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824672250] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:30:17,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:30:17,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-12-18 23:30:17,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046698526] [2023-12-18 23:30:17,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:30:17,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-18 23:30:17,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:30:17,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-18 23:30:17,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2023-12-18 23:30:17,960 INFO L87 Difference]: Start difference. First operand 35667 states and 44135 transitions. Second operand has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:32,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:30:32,981 INFO L93 Difference]: Finished difference Result 116308 states and 142600 transitions. [2023-12-18 23:30:32,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-18 23:30:32,982 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-18 23:30:32,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:30:33,072 INFO L225 Difference]: With dead ends: 116308 [2023-12-18 23:30:33,073 INFO L226 Difference]: Without dead ends: 87510 [2023-12-18 23:30:33,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3817 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2588, Invalid=10984, Unknown=0, NotChecked=0, Total=13572 [2023-12-18 23:30:33,091 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 27267 mSDsluCounter, 15159 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27267 SdHoareTripleChecker+Valid, 16721 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 23:30:33,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27267 Valid, 16721 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 23:30:33,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87510 states. [2023-12-18 23:30:39,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87510 to 47005. [2023-12-18 23:30:39,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47005 states, 47003 states have (on average 1.229878943897198) internal successors, (57808), 47004 states have internal predecessors, (57808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47005 states to 47005 states and 57808 transitions. [2023-12-18 23:30:39,332 INFO L78 Accepts]: Start accepts. Automaton has 47005 states and 57808 transitions. Word has length 101 [2023-12-18 23:30:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:30:39,333 INFO L495 AbstractCegarLoop]: Abstraction has 47005 states and 57808 transitions. [2023-12-18 23:30:39,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 47005 states and 57808 transitions. [2023-12-18 23:30:39,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-18 23:30:39,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:30:39,334 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:30:39,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-18 23:30:39,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:30:39,537 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:30:39,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:30:39,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1000926603, now seen corresponding path program 1 times [2023-12-18 23:30:39,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:30:39,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76628547] [2023-12-18 23:30:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:30:39,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:30:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:30:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 42 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:39,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:30:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76628547] [2023-12-18 23:30:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76628547] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:30:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915070114] [2023-12-18 23:30:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:30:39,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:30:39,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:30:39,950 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:30:39,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 23:30:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:30:40,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:30:40,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:30:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:40,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:30:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 41 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:42,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915070114] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:30:42,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:30:42,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 41 [2023-12-18 23:30:42,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328814938] [2023-12-18 23:30:42,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:30:42,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-18 23:30:42,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:30:42,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-18 23:30:42,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 23:30:42,154 INFO L87 Difference]: Start difference. First operand 47005 states and 57808 transitions. Second operand has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:58,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:30:58,041 INFO L93 Difference]: Finished difference Result 126958 states and 154945 transitions. [2023-12-18 23:30:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-18 23:30:58,042 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-18 23:30:58,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:30:58,140 INFO L225 Difference]: With dead ends: 126958 [2023-12-18 23:30:58,140 INFO L226 Difference]: Without dead ends: 97944 [2023-12-18 23:30:58,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2317, Invalid=9455, Unknown=0, NotChecked=0, Total=11772 [2023-12-18 23:30:58,184 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 23490 mSDsluCounter, 17766 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23490 SdHoareTripleChecker+Valid, 19332 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 23:30:58,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23490 Valid, 19332 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 23:30:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97944 states. [2023-12-18 23:31:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97944 to 63098. [2023-12-18 23:31:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63098 states, 63096 states have (on average 1.2244833269937871) internal successors, (77260), 63097 states have internal predecessors, (77260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:31:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63098 states to 63098 states and 77260 transitions. [2023-12-18 23:31:07,314 INFO L78 Accepts]: Start accepts. Automaton has 63098 states and 77260 transitions. Word has length 101 [2023-12-18 23:31:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:31:07,314 INFO L495 AbstractCegarLoop]: Abstraction has 63098 states and 77260 transitions. [2023-12-18 23:31:07,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:31:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 63098 states and 77260 transitions. [2023-12-18 23:31:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-18 23:31:07,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:31:07,335 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:31:07,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-18 23:31:07,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:31:07,540 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:31:07,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:31:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash 895693035, now seen corresponding path program 1 times [2023-12-18 23:31:07,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:31:07,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949053092] [2023-12-18 23:31:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:31:07,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:31:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:31:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:31:08,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:31:08,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949053092] [2023-12-18 23:31:08,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949053092] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:31:08,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143259611] [2023-12-18 23:31:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:31:08,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:31:08,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:31:08,350 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:31:08,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 23:31:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:31:08,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:31:08,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:31:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:31:09,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:31:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 31 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:31:10,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143259611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:31:10,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:31:10,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 15] total 46 [2023-12-18 23:31:10,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994209706] [2023-12-18 23:31:10,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:31:10,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-18 23:31:10,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:31:10,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-18 23:31:10,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2023-12-18 23:31:10,709 INFO L87 Difference]: Start difference. First operand 63098 states and 77260 transitions. Second operand has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:31:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:31:41,449 INFO L93 Difference]: Finished difference Result 139604 states and 169402 transitions. [2023-12-18 23:31:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-12-18 23:31:41,449 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-18 23:31:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:31:41,563 INFO L225 Difference]: With dead ends: 139604 [2023-12-18 23:31:41,563 INFO L226 Difference]: Without dead ends: 100486 [2023-12-18 23:31:41,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20962 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=9769, Invalid=44287, Unknown=0, NotChecked=0, Total=54056 [2023-12-18 23:31:41,591 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 25486 mSDsluCounter, 25097 mSDsCounter, 0 mSdLazyCounter, 3235 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25486 SdHoareTripleChecker+Valid, 26661 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 3235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 23:31:41,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25486 Valid, 26661 Invalid, 3387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [152 Valid, 3235 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 23:31:41,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100486 states. [2023-12-18 23:31:51,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100486 to 61659. [2023-12-18 23:31:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61659 states, 61657 states have (on average 1.224646025593201) internal successors, (75508), 61658 states have internal predecessors, (75508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:31:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61659 states to 61659 states and 75508 transitions. [2023-12-18 23:31:51,126 INFO L78 Accepts]: Start accepts. Automaton has 61659 states and 75508 transitions. Word has length 101 [2023-12-18 23:31:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:31:51,127 INFO L495 AbstractCegarLoop]: Abstraction has 61659 states and 75508 transitions. [2023-12-18 23:31:51,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:31:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand 61659 states and 75508 transitions. [2023-12-18 23:31:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 23:31:51,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:31:51,128 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:31:51,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-18 23:31:51,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:31:51,332 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:31:51,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:31:51,333 INFO L85 PathProgramCache]: Analyzing trace with hash 297369118, now seen corresponding path program 1 times [2023-12-18 23:31:51,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:31:51,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115295782] [2023-12-18 23:31:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:31:51,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:31:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:31:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:31:52,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:31:52,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115295782] [2023-12-18 23:31:52,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115295782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:31:52,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96797445] [2023-12-18 23:31:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:31:52,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:31:52,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:31:52,574 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:31:52,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 23:31:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:31:52,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-18 23:31:52,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:31:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 30 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:31:55,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:32:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 29 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:32:02,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96797445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:32:02,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:32:02,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 86 [2023-12-18 23:32:02,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441147657] [2023-12-18 23:32:02,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:32:02,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-18 23:32:02,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:32:02,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-18 23:32:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=6543, Unknown=0, NotChecked=0, Total=7310 [2023-12-18 23:32:02,578 INFO L87 Difference]: Start difference. First operand 61659 states and 75508 transitions. Second operand has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:36:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:36:20,932 INFO L93 Difference]: Finished difference Result 153844 states and 186870 transitions. [2023-12-18 23:36:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 434 states. [2023-12-18 23:36:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-18 23:36:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:36:21,096 INFO L225 Difference]: With dead ends: 153844 [2023-12-18 23:36:21,096 INFO L226 Difference]: Without dead ends: 129981 [2023-12-18 23:36:21,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 510 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109975 ImplicationChecksByTransitivity, 234.4s TimeCoverageRelationStatistics Valid=34942, Invalid=226690, Unknown=0, NotChecked=0, Total=261632 [2023-12-18 23:36:21,135 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 38144 mSDsluCounter, 30414 mSDsCounter, 0 mSdLazyCounter, 6339 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38144 SdHoareTripleChecker+Valid, 32024 SdHoareTripleChecker+Invalid, 6791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 6339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:36:21,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38144 Valid, 32024 Invalid, 6791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [452 Valid, 6339 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-18 23:36:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129981 states. Received shutdown request... [2023-12-18 23:36:21,800 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 [2023-12-18 23:36:21,800 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 23:36:22,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-18 23:36:22,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown