/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:20:21,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:20:21,343 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:20:21,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:20:21,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:20:21,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:20:21,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:20:21,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:20:21,377 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:20:21,380 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:20:21,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:20:21,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:20:21,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:20:21,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:20:21,383 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:20:21,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:20:21,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:20:21,384 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:20:21,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:20:21,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:20:21,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:20:21,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:20:21,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:20:21,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:20:21,387 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:20:21,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:20:21,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:20:21,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:20:21,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:20:21,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:20:21,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:20:21,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:20:21,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:20:21,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:20:21,390 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:20:21,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:20:21,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:20:21,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:20:21,391 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:20:21,391 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:20:21,391 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:20:21,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:20:21,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:20:21,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:20:21,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:20:21,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:20:21,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:20:21,650 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:20:21,650 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:20:21,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-16 06:20:22,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:20:23,034 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:20:23,034 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-16 06:20:23,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e3baaec6/f940aab255e44bfaaa95a41778da3a2e/FLAGbd9383eda [2023-12-16 06:20:23,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e3baaec6/f940aab255e44bfaaa95a41778da3a2e [2023-12-16 06:20:23,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:20:23,062 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:20:23,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:20:23,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:20:23,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:20:23,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cae801e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23, skipping insertion in model container [2023-12-16 06:20:23,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,105 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:20:23,280 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4409,4422] [2023-12-16 06:20:23,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:20:23,315 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:20:23,344 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4409,4422] [2023-12-16 06:20:23,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:20:23,371 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:20:23,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23 WrapperNode [2023-12-16 06:20:23,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:20:23,372 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:20:23,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:20:23,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:20:23,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,421 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 355 [2023-12-16 06:20:23,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:20:23,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:20:23,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:20:23,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:20:23,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,462 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]. [2023-12-16 06:20:23,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:20:23,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:20:23,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:20:23,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:20:23,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (1/1) ... [2023-12-16 06:20:23,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:20:23,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:20:23,545 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) [2023-12-16 06:20:23,577 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 [2023-12-16 06:20:23,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:20:23,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:20:23,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:20:23,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:20:23,702 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:20:23,703 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:20:24,054 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:20:24,078 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:20:24,079 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 06:20:24,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:20:24 BoogieIcfgContainer [2023-12-16 06:20:24,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:20:24,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:20:24,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:20:24,084 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:20:24,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:20:23" (1/3) ... [2023-12-16 06:20:24,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb1abb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:20:24, skipping insertion in model container [2023-12-16 06:20:24,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:23" (2/3) ... [2023-12-16 06:20:24,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb1abb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:20:24, skipping insertion in model container [2023-12-16 06:20:24,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:20:24" (3/3) ... [2023-12-16 06:20:24,086 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-16 06:20:24,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:20:24,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:20:24,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:20:24,145 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;@4ebdec51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:20:24,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:20:24,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:24,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 06:20:24,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:24,178 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] [2023-12-16 06:20:24,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:24,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:24,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2074678528, now seen corresponding path program 1 times [2023-12-16 06:20:24,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:24,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991668154] [2023-12-16 06:20:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:24,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:24,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:24,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991668154] [2023-12-16 06:20:24,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991668154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:24,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:24,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:24,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549889476] [2023-12-16 06:20:24,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:24,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:24,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:24,546 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 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 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:24,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:24,596 INFO L93 Difference]: Finished difference Result 201 states and 320 transitions. [2023-12-16 06:20:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:24,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-12-16 06:20:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:24,610 INFO L225 Difference]: With dead ends: 201 [2023-12-16 06:20:24,610 INFO L226 Difference]: Without dead ends: 131 [2023-12-16 06:20:24,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:24,618 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 93 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 275 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 [2023-12-16 06:20:24,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 275 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-16 06:20:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2023-12-16 06:20:24,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.5078125) internal successors, (193), 128 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 193 transitions. [2023-12-16 06:20:24,658 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 193 transitions. Word has length 37 [2023-12-16 06:20:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:24,659 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 193 transitions. [2023-12-16 06:20:24,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 193 transitions. [2023-12-16 06:20:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 06:20:24,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:24,660 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] [2023-12-16 06:20:24,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:20:24,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:24,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1791063870, now seen corresponding path program 1 times [2023-12-16 06:20:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:24,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375964587] [2023-12-16 06:20:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:24,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:24,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:24,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375964587] [2023-12-16 06:20:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375964587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:24,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272356149] [2023-12-16 06:20:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:24,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:24,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:24,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:24,739 INFO L87 Difference]: Start difference. First operand 129 states and 193 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) [2023-12-16 06:20:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:24,764 INFO L93 Difference]: Finished difference Result 317 states and 489 transitions. [2023-12-16 06:20:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:24,765 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 [2023-12-16 06:20:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:24,767 INFO L225 Difference]: With dead ends: 317 [2023-12-16 06:20:24,767 INFO L226 Difference]: Without dead ends: 207 [2023-12-16 06:20:24,768 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 [2023-12-16 06:20:24,769 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 79 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:24,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-16 06:20:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2023-12-16 06:20:24,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5294117647058822) internal successors, (312), 204 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 312 transitions. [2023-12-16 06:20:24,789 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 312 transitions. Word has length 38 [2023-12-16 06:20:24,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:24,790 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 312 transitions. [2023-12-16 06:20:24,790 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) [2023-12-16 06:20:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 312 transitions. [2023-12-16 06:20:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-16 06:20:24,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:24,791 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, 1, 1, 1] [2023-12-16 06:20:24,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:20:24,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:24,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash 71230663, now seen corresponding path program 1 times [2023-12-16 06:20:24,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:24,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904810677] [2023-12-16 06:20:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:24,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:24,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:24,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904810677] [2023-12-16 06:20:24,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904810677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:24,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:24,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:24,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112178265] [2023-12-16 06:20:24,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:24,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:24,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:24,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:24,950 INFO L87 Difference]: Start difference. First operand 205 states and 312 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:25,048 INFO L93 Difference]: Finished difference Result 949 states and 1484 transitions. [2023-12-16 06:20:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:25,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-16 06:20:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:25,056 INFO L225 Difference]: With dead ends: 949 [2023-12-16 06:20:25,056 INFO L226 Difference]: Without dead ends: 763 [2023-12-16 06:20:25,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:25,063 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 501 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:25,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 674 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2023-12-16 06:20:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 389. [2023-12-16 06:20:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.5360824742268042) internal successors, (596), 388 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 596 transitions. [2023-12-16 06:20:25,101 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 596 transitions. Word has length 39 [2023-12-16 06:20:25,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:25,102 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 596 transitions. [2023-12-16 06:20:25,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,102 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 596 transitions. [2023-12-16 06:20:25,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 06:20:25,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:25,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:25,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:20:25,104 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:25,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2106273057, now seen corresponding path program 1 times [2023-12-16 06:20:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885043371] [2023-12-16 06:20:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:25,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:25,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885043371] [2023-12-16 06:20:25,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885043371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:25,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:25,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:25,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805006544] [2023-12-16 06:20:25,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:25,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:25,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:25,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:25,224 INFO L87 Difference]: Start difference. First operand 389 states and 596 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:25,287 INFO L93 Difference]: Finished difference Result 1347 states and 2079 transitions. [2023-12-16 06:20:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:25,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-16 06:20:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:25,292 INFO L225 Difference]: With dead ends: 1347 [2023-12-16 06:20:25,293 INFO L226 Difference]: Without dead ends: 977 [2023-12-16 06:20:25,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:25,295 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 242 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:25,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 372 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-12-16 06:20:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 973. [2023-12-16 06:20:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 1.5349794238683128) internal successors, (1492), 972 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1492 transitions. [2023-12-16 06:20:25,323 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1492 transitions. Word has length 40 [2023-12-16 06:20:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:25,326 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1492 transitions. [2023-12-16 06:20:25,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,326 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1492 transitions. [2023-12-16 06:20:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 06:20:25,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:25,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:25,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:20:25,334 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:25,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:25,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2092318921, now seen corresponding path program 1 times [2023-12-16 06:20:25,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:25,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153864537] [2023-12-16 06:20:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:25,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153864537] [2023-12-16 06:20:25,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153864537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:25,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:25,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:25,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032562941] [2023-12-16 06:20:25,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:25,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:25,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:25,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:25,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:25,422 INFO L87 Difference]: Start difference. First operand 973 states and 1492 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:25,462 INFO L93 Difference]: Finished difference Result 2489 states and 3806 transitions. [2023-12-16 06:20:25,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:25,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-16 06:20:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:25,470 INFO L225 Difference]: With dead ends: 2489 [2023-12-16 06:20:25,470 INFO L226 Difference]: Without dead ends: 1535 [2023-12-16 06:20:25,471 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 [2023-12-16 06:20:25,472 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 86 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:25,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 273 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2023-12-16 06:20:25,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1533. [2023-12-16 06:20:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1532 states have (on average 1.5065274151436032) internal successors, (2308), 1532 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2308 transitions. [2023-12-16 06:20:25,515 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2308 transitions. Word has length 41 [2023-12-16 06:20:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:25,516 INFO L495 AbstractCegarLoop]: Abstraction has 1533 states and 2308 transitions. [2023-12-16 06:20:25,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2308 transitions. [2023-12-16 06:20:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 06:20:25,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:25,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:25,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:20:25,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:25,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash 841422888, now seen corresponding path program 1 times [2023-12-16 06:20:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:25,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338885422] [2023-12-16 06:20:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:25,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:25,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338885422] [2023-12-16 06:20:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338885422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:25,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:25,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:20:25,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829037778] [2023-12-16 06:20:25,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:25,619 INFO L87 Difference]: Start difference. First operand 1533 states and 2308 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:25,790 INFO L93 Difference]: Finished difference Result 4105 states and 6198 transitions. [2023-12-16 06:20:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:25,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-16 06:20:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:25,799 INFO L225 Difference]: With dead ends: 4105 [2023-12-16 06:20:25,799 INFO L226 Difference]: Without dead ends: 2591 [2023-12-16 06:20:25,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:25,802 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 524 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:25,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 135 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:20:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2023-12-16 06:20:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2023-12-16 06:20:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2588 states have (on average 1.4945904173106646) internal successors, (3868), 2588 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3868 transitions. [2023-12-16 06:20:25,860 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3868 transitions. Word has length 42 [2023-12-16 06:20:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:25,860 INFO L495 AbstractCegarLoop]: Abstraction has 2589 states and 3868 transitions. [2023-12-16 06:20:25,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:25,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3868 transitions. [2023-12-16 06:20:25,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 06:20:25,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:25,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:25,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:20:25,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:25,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:25,863 INFO L85 PathProgramCache]: Analyzing trace with hash 27010893, now seen corresponding path program 1 times [2023-12-16 06:20:25,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:25,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45708695] [2023-12-16 06:20:25,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:25,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:26,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:26,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45708695] [2023-12-16 06:20:26,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45708695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:26,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:26,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:26,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705021242] [2023-12-16 06:20:26,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:26,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:26,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:26,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:26,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:26,071 INFO L87 Difference]: Start difference. First operand 2589 states and 3868 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:26,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:26,127 INFO L93 Difference]: Finished difference Result 5319 states and 7877 transitions. [2023-12-16 06:20:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:20:26,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-16 06:20:26,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:26,146 INFO L225 Difference]: With dead ends: 5319 [2023-12-16 06:20:26,146 INFO L226 Difference]: Without dead ends: 5317 [2023-12-16 06:20:26,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:20:26,153 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 190 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:26,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 580 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5317 states. [2023-12-16 06:20:26,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5317 to 2749. [2023-12-16 06:20:26,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 2748 states have (on average 1.4657933042212519) internal successors, (4028), 2748 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 4028 transitions. [2023-12-16 06:20:26,228 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 4028 transitions. Word has length 42 [2023-12-16 06:20:26,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:26,228 INFO L495 AbstractCegarLoop]: Abstraction has 2749 states and 4028 transitions. [2023-12-16 06:20:26,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 4028 transitions. [2023-12-16 06:20:26,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 06:20:26,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:26,230 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] [2023-12-16 06:20:26,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:20:26,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:26,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash 847910697, now seen corresponding path program 1 times [2023-12-16 06:20:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:26,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633567338] [2023-12-16 06:20:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:26,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:26,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:26,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633567338] [2023-12-16 06:20:26,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633567338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:26,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:26,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:26,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199610691] [2023-12-16 06:20:26,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:26,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:26,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:26,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:26,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:26,302 INFO L87 Difference]: Start difference. First operand 2749 states and 4028 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:26,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:26,337 INFO L93 Difference]: Finished difference Result 6191 states and 9052 transitions. [2023-12-16 06:20:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:26,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-16 06:20:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:26,349 INFO L225 Difference]: With dead ends: 6191 [2023-12-16 06:20:26,349 INFO L226 Difference]: Without dead ends: 3461 [2023-12-16 06:20:26,353 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 [2023-12-16 06:20:26,354 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 66 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:26,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 212 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:26,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2023-12-16 06:20:26,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3439. [2023-12-16 06:20:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3439 states, 3438 states have (on average 1.4490983129726585) internal successors, (4982), 3438 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 4982 transitions. [2023-12-16 06:20:26,422 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 4982 transitions. Word has length 43 [2023-12-16 06:20:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:26,423 INFO L495 AbstractCegarLoop]: Abstraction has 3439 states and 4982 transitions. [2023-12-16 06:20:26,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 4982 transitions. [2023-12-16 06:20:26,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:20:26,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:26,443 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, 1, 1] [2023-12-16 06:20:26,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:20:26,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:26,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:26,444 INFO L85 PathProgramCache]: Analyzing trace with hash 449838288, now seen corresponding path program 1 times [2023-12-16 06:20:26,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:26,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339270768] [2023-12-16 06:20:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:26,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339270768] [2023-12-16 06:20:26,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339270768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:26,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:26,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:26,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877916728] [2023-12-16 06:20:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:26,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:26,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:26,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:26,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:26,513 INFO L87 Difference]: Start difference. First operand 3439 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:26,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:26,547 INFO L93 Difference]: Finished difference Result 8580 states and 12442 transitions. [2023-12-16 06:20:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:26,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 06:20:26,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:26,566 INFO L225 Difference]: With dead ends: 8580 [2023-12-16 06:20:26,567 INFO L226 Difference]: Without dead ends: 5762 [2023-12-16 06:20:26,575 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 [2023-12-16 06:20:26,577 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 69 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:26,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 275 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:26,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2023-12-16 06:20:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 5760. [2023-12-16 06:20:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5760 states, 5759 states have (on average 1.431498524049314) internal successors, (8244), 5759 states have internal predecessors, (8244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 8244 transitions. [2023-12-16 06:20:26,680 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 8244 transitions. Word has length 62 [2023-12-16 06:20:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:26,681 INFO L495 AbstractCegarLoop]: Abstraction has 5760 states and 8244 transitions. [2023-12-16 06:20:26,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 8244 transitions. [2023-12-16 06:20:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:20:26,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:26,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:26,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:20:26,685 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:26,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash -666800049, now seen corresponding path program 1 times [2023-12-16 06:20:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:26,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289836997] [2023-12-16 06:20:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:26,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:26,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289836997] [2023-12-16 06:20:26,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289836997] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:20:26,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119670571] [2023-12-16 06:20:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:26,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:20:26,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:20:26,960 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) [2023-12-16 06:20:26,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 06:20:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:27,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:20:27,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:20:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:20:27,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:20:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:20:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119670571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:20:27,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:20:27,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2023-12-16 06:20:27,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967977701] [2023-12-16 06:20:27,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:20:27,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 06:20:27,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:27,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 06:20:27,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:20:27,340 INFO L87 Difference]: Start difference. First operand 5760 states and 8244 transitions. Second operand has 13 states, 13 states have (on average 13.461538461538462) internal successors, (175), 13 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:31,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:31,159 INFO L93 Difference]: Finished difference Result 41390 states and 58062 transitions. [2023-12-16 06:20:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-16 06:20:31,159 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.461538461538462) internal successors, (175), 13 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 06:20:31,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:31,247 INFO L225 Difference]: With dead ends: 41390 [2023-12-16 06:20:31,248 INFO L226 Difference]: Without dead ends: 36164 [2023-12-16 06:20:31,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4239 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1930, Invalid=8576, Unknown=0, NotChecked=0, Total=10506 [2023-12-16 06:20:31,262 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 4374 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:31,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 2398 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 06:20:31,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36164 states. [2023-12-16 06:20:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36164 to 20252. [2023-12-16 06:20:31,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20252 states, 20251 states have (on average 1.3978075156782381) internal successors, (28307), 20251 states have internal predecessors, (28307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20252 states to 20252 states and 28307 transitions. [2023-12-16 06:20:31,713 INFO L78 Accepts]: Start accepts. Automaton has 20252 states and 28307 transitions. Word has length 62 [2023-12-16 06:20:31,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:31,713 INFO L495 AbstractCegarLoop]: Abstraction has 20252 states and 28307 transitions. [2023-12-16 06:20:31,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.461538461538462) internal successors, (175), 13 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 20252 states and 28307 transitions. [2023-12-16 06:20:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:20:31,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:31,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:31,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 06:20:31,925 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,SelfDestructingSolverStorable9 [2023-12-16 06:20:31,925 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:31,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash 836177817, now seen corresponding path program 1 times [2023-12-16 06:20:31,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:31,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724929969] [2023-12-16 06:20:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:31,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 06:20:32,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:32,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724929969] [2023-12-16 06:20:32,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724929969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:32,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:32,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:32,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107404853] [2023-12-16 06:20:32,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:32,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:32,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:32,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:32,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:32,024 INFO L87 Difference]: Start difference. First operand 20252 states and 28307 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:32,142 INFO L93 Difference]: Finished difference Result 37311 states and 52453 transitions. [2023-12-16 06:20:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 06:20:32,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:32,198 INFO L225 Difference]: With dead ends: 37311 [2023-12-16 06:20:32,199 INFO L226 Difference]: Without dead ends: 28601 [2023-12-16 06:20:32,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:32,218 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 352 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:32,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 557 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28601 states. [2023-12-16 06:20:32,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28601 to 26424. [2023-12-16 06:20:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26424 states, 26423 states have (on average 1.390985126594255) internal successors, (36754), 26423 states have internal predecessors, (36754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 36754 transitions. [2023-12-16 06:20:33,011 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 36754 transitions. Word has length 62 [2023-12-16 06:20:33,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:33,015 INFO L495 AbstractCegarLoop]: Abstraction has 26424 states and 36754 transitions. [2023-12-16 06:20:33,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 36754 transitions. [2023-12-16 06:20:33,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:20:33,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:33,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:33,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:20:33,019 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:33,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:33,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1040504960, now seen corresponding path program 1 times [2023-12-16 06:20:33,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:33,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689699334] [2023-12-16 06:20:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:33,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:33,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:33,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689699334] [2023-12-16 06:20:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689699334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:33,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462037784] [2023-12-16 06:20:33,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:33,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:33,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:33,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:33,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:33,063 INFO L87 Difference]: Start difference. First operand 26424 states and 36754 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:33,211 INFO L93 Difference]: Finished difference Result 45839 states and 63625 transitions. [2023-12-16 06:20:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:33,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 06:20:33,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:33,268 INFO L225 Difference]: With dead ends: 45839 [2023-12-16 06:20:33,268 INFO L226 Difference]: Without dead ends: 27452 [2023-12-16 06:20:33,290 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 [2023-12-16 06:20:33,291 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 69 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:33,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 268 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27452 states. [2023-12-16 06:20:33,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27452 to 26531. [2023-12-16 06:20:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26531 states, 26530 states have (on average 1.3648322653599698) internal successors, (36209), 26530 states have internal predecessors, (36209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26531 states to 26531 states and 36209 transitions. [2023-12-16 06:20:33,751 INFO L78 Accepts]: Start accepts. Automaton has 26531 states and 36209 transitions. Word has length 62 [2023-12-16 06:20:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:33,751 INFO L495 AbstractCegarLoop]: Abstraction has 26531 states and 36209 transitions. [2023-12-16 06:20:33,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 26531 states and 36209 transitions. [2023-12-16 06:20:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:20:33,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:33,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:20:33,756 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:33,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 2088470482, now seen corresponding path program 1 times [2023-12-16 06:20:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:33,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845214608] [2023-12-16 06:20:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:33,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 06:20:33,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845214608] [2023-12-16 06:20:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845214608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:33,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:33,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649615106] [2023-12-16 06:20:33,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:33,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:33,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:33,823 INFO L87 Difference]: Start difference. First operand 26531 states and 36209 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2023-12-16 06:20:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:33,950 INFO L93 Difference]: Finished difference Result 37675 states and 51958 transitions. [2023-12-16 06:20:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:33,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 62 [2023-12-16 06:20:33,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:34,089 INFO L225 Difference]: With dead ends: 37675 [2023-12-16 06:20:34,090 INFO L226 Difference]: Without dead ends: 33111 [2023-12-16 06:20:34,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:34,121 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 358 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:34,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 550 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33111 states. [2023-12-16 06:20:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33111 to 30913. [2023-12-16 06:20:34,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30913 states, 30912 states have (on average 1.3675918737060042) internal successors, (42275), 30912 states have internal predecessors, (42275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30913 states to 30913 states and 42275 transitions. [2023-12-16 06:20:34,472 INFO L78 Accepts]: Start accepts. Automaton has 30913 states and 42275 transitions. Word has length 62 [2023-12-16 06:20:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:34,472 INFO L495 AbstractCegarLoop]: Abstraction has 30913 states and 42275 transitions. [2023-12-16 06:20:34,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2023-12-16 06:20:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 30913 states and 42275 transitions. [2023-12-16 06:20:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 06:20:34,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:34,477 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:34,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:20:34,477 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:34,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash 626233138, now seen corresponding path program 1 times [2023-12-16 06:20:34,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:34,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880209369] [2023-12-16 06:20:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:34,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:34,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:34,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880209369] [2023-12-16 06:20:34,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880209369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:34,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:34,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:34,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447562944] [2023-12-16 06:20:34,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:34,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:34,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:34,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:34,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:34,518 INFO L87 Difference]: Start difference. First operand 30913 states and 42275 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:34,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:34,629 INFO L93 Difference]: Finished difference Result 44727 states and 60920 transitions. [2023-12-16 06:20:34,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:34,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-16 06:20:34,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:34,828 INFO L225 Difference]: With dead ends: 44727 [2023-12-16 06:20:34,829 INFO L226 Difference]: Without dead ends: 26716 [2023-12-16 06:20:34,859 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 [2023-12-16 06:20:34,860 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 64 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:34,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 252 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26716 states. [2023-12-16 06:20:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26716 to 26649. [2023-12-16 06:20:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26649 states, 26648 states have (on average 1.3542104473131191) internal successors, (36087), 26648 states have internal predecessors, (36087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:35,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26649 states to 26649 states and 36087 transitions. [2023-12-16 06:20:35,275 INFO L78 Accepts]: Start accepts. Automaton has 26649 states and 36087 transitions. Word has length 63 [2023-12-16 06:20:35,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:35,275 INFO L495 AbstractCegarLoop]: Abstraction has 26649 states and 36087 transitions. [2023-12-16 06:20:35,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 26649 states and 36087 transitions. [2023-12-16 06:20:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 06:20:35,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:35,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:35,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:20:35,280 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:35,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1537795674, now seen corresponding path program 1 times [2023-12-16 06:20:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:35,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655617810] [2023-12-16 06:20:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:35,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:35,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:20:35,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655617810] [2023-12-16 06:20:35,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655617810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:35,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:35,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:35,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556307929] [2023-12-16 06:20:35,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:35,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:35,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:35,383 INFO L87 Difference]: Start difference. First operand 26649 states and 36087 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:35,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:35,579 INFO L93 Difference]: Finished difference Result 35743 states and 48607 transitions. [2023-12-16 06:20:35,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:35,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-16 06:20:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:35,628 INFO L225 Difference]: With dead ends: 35743 [2023-12-16 06:20:35,628 INFO L226 Difference]: Without dead ends: 31333 [2023-12-16 06:20:35,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:35,645 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 334 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:35,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 588 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31333 states. [2023-12-16 06:20:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31333 to 29638. [2023-12-16 06:20:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29638 states, 29637 states have (on average 1.350878968856497) internal successors, (40036), 29637 states have internal predecessors, (40036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29638 states to 29638 states and 40036 transitions. [2023-12-16 06:20:36,036 INFO L78 Accepts]: Start accepts. Automaton has 29638 states and 40036 transitions. Word has length 64 [2023-12-16 06:20:36,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:36,037 INFO L495 AbstractCegarLoop]: Abstraction has 29638 states and 40036 transitions. [2023-12-16 06:20:36,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 29638 states and 40036 transitions. [2023-12-16 06:20:36,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-16 06:20:36,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:36,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:36,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:20:36,042 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:36,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash 10712915, now seen corresponding path program 1 times [2023-12-16 06:20:36,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:36,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045041315] [2023-12-16 06:20:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:36,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:36,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:36,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045041315] [2023-12-16 06:20:36,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045041315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:36,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:36,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:36,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251747393] [2023-12-16 06:20:36,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:36,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:36,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:36,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:36,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:36,080 INFO L87 Difference]: Start difference. First operand 29638 states and 40036 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:36,236 INFO L93 Difference]: Finished difference Result 66757 states and 90013 transitions. [2023-12-16 06:20:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:36,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-16 06:20:36,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:36,284 INFO L225 Difference]: With dead ends: 66757 [2023-12-16 06:20:36,284 INFO L226 Difference]: Without dead ends: 43389 [2023-12-16 06:20:36,306 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 [2023-12-16 06:20:36,307 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 65 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:36,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 258 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43389 states. [2023-12-16 06:20:36,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43389 to 43387. [2023-12-16 06:20:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43387 states, 43386 states have (on average 1.3288387959249528) internal successors, (57653), 43386 states have internal predecessors, (57653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43387 states to 43387 states and 57653 transitions. [2023-12-16 06:20:37,028 INFO L78 Accepts]: Start accepts. Automaton has 43387 states and 57653 transitions. Word has length 65 [2023-12-16 06:20:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:37,029 INFO L495 AbstractCegarLoop]: Abstraction has 43387 states and 57653 transitions. [2023-12-16 06:20:37,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 43387 states and 57653 transitions. [2023-12-16 06:20:37,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 06:20:37,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:37,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:37,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:20:37,034 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:37,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1771478396, now seen corresponding path program 1 times [2023-12-16 06:20:37,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:37,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537492776] [2023-12-16 06:20:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:37,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 06:20:37,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:37,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537492776] [2023-12-16 06:20:37,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537492776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:37,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:37,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:20:37,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448483654] [2023-12-16 06:20:37,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:37,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:37,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:37,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:37,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:37,099 INFO L87 Difference]: Start difference. First operand 43387 states and 57653 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:37,637 INFO L93 Difference]: Finished difference Result 105105 states and 139351 transitions. [2023-12-16 06:20:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:37,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-16 06:20:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:37,715 INFO L225 Difference]: With dead ends: 105105 [2023-12-16 06:20:37,715 INFO L226 Difference]: Without dead ends: 61774 [2023-12-16 06:20:37,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:37,750 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 482 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:37,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 139 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:20:37,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61774 states. [2023-12-16 06:20:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61774 to 61344. [2023-12-16 06:20:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61344 states, 61343 states have (on average 1.313450597460183) internal successors, (80571), 61343 states have internal predecessors, (80571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61344 states to 61344 states and 80571 transitions. [2023-12-16 06:20:38,564 INFO L78 Accepts]: Start accepts. Automaton has 61344 states and 80571 transitions. Word has length 67 [2023-12-16 06:20:38,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:38,565 INFO L495 AbstractCegarLoop]: Abstraction has 61344 states and 80571 transitions. [2023-12-16 06:20:38,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:38,565 INFO L276 IsEmpty]: Start isEmpty. Operand 61344 states and 80571 transitions. [2023-12-16 06:20:38,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 06:20:38,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:38,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:38,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:20:38,571 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:38,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1257658335, now seen corresponding path program 1 times [2023-12-16 06:20:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:38,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280135957] [2023-12-16 06:20:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:38,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 06:20:38,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280135957] [2023-12-16 06:20:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280135957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:38,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:38,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:20:38,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428843339] [2023-12-16 06:20:38,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:38,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:38,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:38,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:38,653 INFO L87 Difference]: Start difference. First operand 61344 states and 80571 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:39,233 INFO L93 Difference]: Finished difference Result 138757 states and 181932 transitions. [2023-12-16 06:20:39,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:39,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-16 06:20:39,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:39,336 INFO L225 Difference]: With dead ends: 138757 [2023-12-16 06:20:39,336 INFO L226 Difference]: Without dead ends: 77499 [2023-12-16 06:20:39,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:39,379 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 462 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:39,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 147 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:20:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77499 states. [2023-12-16 06:20:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77499 to 77190. [2023-12-16 06:20:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77190 states, 77189 states have (on average 1.297412843798987) internal successors, (100146), 77189 states have internal predecessors, (100146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77190 states to 77190 states and 100146 transitions. [2023-12-16 06:20:40,354 INFO L78 Accepts]: Start accepts. Automaton has 77190 states and 100146 transitions. Word has length 67 [2023-12-16 06:20:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:40,355 INFO L495 AbstractCegarLoop]: Abstraction has 77190 states and 100146 transitions. [2023-12-16 06:20:40,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 77190 states and 100146 transitions. [2023-12-16 06:20:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 06:20:40,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:40,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:40,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:20:40,360 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:40,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 261299484, now seen corresponding path program 1 times [2023-12-16 06:20:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:40,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251847987] [2023-12-16 06:20:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:40,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251847987] [2023-12-16 06:20:40,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251847987] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:20:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727431176] [2023-12-16 06:20:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:40,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:20:40,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:20:40,450 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) [2023-12-16 06:20:40,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 06:20:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:40,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:20:40,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:20:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:40,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:20:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:41,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727431176] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:20:41,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:20:41,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-16 06:20:41,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960646825] [2023-12-16 06:20:41,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:20:41,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 06:20:41,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 06:20:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:20:41,064 INFO L87 Difference]: Start difference. First operand 77190 states and 100146 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:41,825 INFO L93 Difference]: Finished difference Result 198004 states and 256127 transitions. [2023-12-16 06:20:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 06:20:41,825 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 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 67 [2023-12-16 06:20:41,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:42,308 INFO L225 Difference]: With dead ends: 198004 [2023-12-16 06:20:42,308 INFO L226 Difference]: Without dead ends: 141320 [2023-12-16 06:20:42,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-16 06:20:42,358 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1780 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:42,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 356 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:20:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141320 states. [2023-12-16 06:20:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141320 to 83514. [2023-12-16 06:20:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83514 states, 83513 states have (on average 1.2984924502772024) internal successors, (108441), 83513 states have internal predecessors, (108441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83514 states to 83514 states and 108441 transitions. [2023-12-16 06:20:43,534 INFO L78 Accepts]: Start accepts. Automaton has 83514 states and 108441 transitions. Word has length 67 [2023-12-16 06:20:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:43,534 INFO L495 AbstractCegarLoop]: Abstraction has 83514 states and 108441 transitions. [2023-12-16 06:20:43,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 83514 states and 108441 transitions. [2023-12-16 06:20:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 06:20:43,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:43,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:43,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 06:20:43,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:20:43,741 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:43,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:43,741 INFO L85 PathProgramCache]: Analyzing trace with hash 458570350, now seen corresponding path program 1 times [2023-12-16 06:20:43,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:43,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87994770] [2023-12-16 06:20:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:43,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:43,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87994770] [2023-12-16 06:20:43,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87994770] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:20:43,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830668909] [2023-12-16 06:20:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:43,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:20:43,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:20:43,844 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) [2023-12-16 06:20:43,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 06:20:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:43,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:20:43,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:20:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:44,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:20:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:44,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830668909] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:20:44,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:20:44,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-16 06:20:44,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937395689] [2023-12-16 06:20:44,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:20:44,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 06:20:44,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:44,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 06:20:44,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:20:44,193 INFO L87 Difference]: Start difference. First operand 83514 states and 108441 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:44,949 INFO L93 Difference]: Finished difference Result 141759 states and 183079 transitions. [2023-12-16 06:20:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 06:20:44,949 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 68 [2023-12-16 06:20:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:45,103 INFO L225 Difference]: With dead ends: 141759 [2023-12-16 06:20:45,103 INFO L226 Difference]: Without dead ends: 108926 [2023-12-16 06:20:45,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-16 06:20:45,155 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 1682 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:45,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 280 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:20:45,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108926 states. [2023-12-16 06:20:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108926 to 83965. [2023-12-16 06:20:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83965 states, 83964 states have (on average 1.2894454766328427) internal successors, (108267), 83964 states have internal predecessors, (108267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83965 states to 83965 states and 108267 transitions. [2023-12-16 06:20:46,459 INFO L78 Accepts]: Start accepts. Automaton has 83965 states and 108267 transitions. Word has length 68 [2023-12-16 06:20:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:46,459 INFO L495 AbstractCegarLoop]: Abstraction has 83965 states and 108267 transitions. [2023-12-16 06:20:46,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:46,459 INFO L276 IsEmpty]: Start isEmpty. Operand 83965 states and 108267 transitions. [2023-12-16 06:20:46,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 06:20:46,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:46,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:46,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 06:20:46,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:20:46,665 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:46,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:46,666 INFO L85 PathProgramCache]: Analyzing trace with hash -966988150, now seen corresponding path program 1 times [2023-12-16 06:20:46,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:46,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102994118] [2023-12-16 06:20:46,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:46,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:46,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:46,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102994118] [2023-12-16 06:20:46,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102994118] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:20:46,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192139468] [2023-12-16 06:20:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:46,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:20:46,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:20:46,771 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) [2023-12-16 06:20:46,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 06:20:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:46,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:20:46,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:20:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:47,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:20:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:47,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192139468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:20:47,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:20:47,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-16 06:20:47,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338844089] [2023-12-16 06:20:47,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:20:47,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 06:20:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 06:20:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:20:47,149 INFO L87 Difference]: Start difference. First operand 83965 states and 108267 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:48,250 INFO L93 Difference]: Finished difference Result 206231 states and 265484 transitions. [2023-12-16 06:20:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 06:20:48,250 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 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 69 [2023-12-16 06:20:48,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:48,466 INFO L225 Difference]: With dead ends: 206231 [2023-12-16 06:20:48,466 INFO L226 Difference]: Without dead ends: 158691 [2023-12-16 06:20:48,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-16 06:20:48,535 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1893 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:48,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1893 Valid, 333 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:20:48,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158691 states. [2023-12-16 06:20:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158691 to 95529. [2023-12-16 06:20:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95529 states, 95528 states have (on average 1.290867599028557) internal successors, (123314), 95528 states have internal predecessors, (123314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95529 states to 95529 states and 123314 transitions. [2023-12-16 06:20:50,457 INFO L78 Accepts]: Start accepts. Automaton has 95529 states and 123314 transitions. Word has length 69 [2023-12-16 06:20:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:50,457 INFO L495 AbstractCegarLoop]: Abstraction has 95529 states and 123314 transitions. [2023-12-16 06:20:50,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 95529 states and 123314 transitions. [2023-12-16 06:20:50,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 06:20:50,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:50,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:50,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 06:20:50,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:20:50,673 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:50,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:50,673 INFO L85 PathProgramCache]: Analyzing trace with hash 822715612, now seen corresponding path program 1 times [2023-12-16 06:20:50,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:50,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095468339] [2023-12-16 06:20:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:50,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:50,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:50,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095468339] [2023-12-16 06:20:50,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095468339] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:20:50,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793038663] [2023-12-16 06:20:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:50,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:20:50,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:20:50,927 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) [2023-12-16 06:20:50,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 06:20:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:51,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 06:20:51,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:20:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:52,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:20:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:54,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793038663] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:20:54,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:20:54,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 16] total 34 [2023-12-16 06:20:54,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032155610] [2023-12-16 06:20:54,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:20:54,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-16 06:20:54,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:54,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-16 06:20:54,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 06:20:54,098 INFO L87 Difference]: Start difference. First operand 95529 states and 123314 transitions. Second operand has 35 states, 35 states have (on average 5.542857142857143) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 06:21:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 389 states. [2023-12-16 06:21:18,023 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 [2023-12-16 06:21:18,024 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:21:18,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 420 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82555 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=26891, Invalid=150771, Unknown=0, NotChecked=0, Total=177662 [2023-12-16 06:21:18,031 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 10122 mSDsluCounter, 4323 mSDsCounter, 0 mSdLazyCounter, 5781 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10122 SdHoareTripleChecker+Valid, 4654 SdHoareTripleChecker+Invalid, 6019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 5781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-16 06:21:18,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10122 Valid, 4654 Invalid, 6019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 5781 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-16 06:21:18,033 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:21:18,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 06:21:18,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-16 06:21:18,241 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (95529states) and FLOYD_HOARE automaton (currently 389 states, 35 states before enhancement),while ReachableStatesComputation was computing reachable states (20926 states constructed, input type IntersectNwa). [2023-12-16 06:21:18,245 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:21:18,248 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:21:18,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:21:18 BoogieIcfgContainer [2023-12-16 06:21:18,250 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:21:18,251 INFO L158 Benchmark]: Toolchain (without parser) took 55189.33ms. Allocated memory was 277.9MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 230.6MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-16 06:21:18,251 INFO L158 Benchmark]: CDTParser took 1.23ms. Allocated memory is still 179.3MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:21:18,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.73ms. Allocated memory is still 277.9MB. Free memory was 230.6MB in the beginning and 214.5MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 06:21:18,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.78ms. Allocated memory is still 277.9MB. Free memory was 214.5MB in the beginning and 212.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:21:18,253 INFO L158 Benchmark]: Boogie Preprocessor took 70.02ms. Allocated memory is still 277.9MB. Free memory was 212.2MB in the beginning and 209.3MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:21:18,254 INFO L158 Benchmark]: RCFGBuilder took 585.79ms. Allocated memory is still 277.9MB. Free memory was 209.3MB in the beginning and 184.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-16 06:21:18,254 INFO L158 Benchmark]: TraceAbstraction took 54169.32ms. Allocated memory was 277.9MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 183.5MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-16 06:21:18,257 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.23ms. Allocated memory is still 179.3MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.73ms. Allocated memory is still 277.9MB. Free memory was 230.6MB in the beginning and 214.5MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.78ms. Allocated memory is still 277.9MB. Free memory was 214.5MB in the beginning and 212.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 70.02ms. Allocated memory is still 277.9MB. Free memory was 212.2MB in the beginning and 209.3MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 585.79ms. Allocated memory is still 277.9MB. Free memory was 209.3MB in the beginning and 184.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 54169.32ms. Allocated memory was 277.9MB in the beginning and 7.4GB in the end (delta: 7.1GB). Free memory was 183.5MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 214]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 214). Cancelled while NwaCegarLoop was constructing difference of abstraction (95529states) and FLOYD_HOARE automaton (currently 389 states, 35 states before enhancement),while ReachableStatesComputation was computing reachable states (20926 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.1s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 35.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23887 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23887 mSDsluCounter, 13809 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10202 mSDsCounter, 392 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9194 IncrementalHoareTripleChecker+Invalid, 9586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 392 mSolverCounterUnsat, 3607 mSDtfsCounter, 9194 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1277 GetRequests, 643 SyntacticMatches, 15 SemanticMatches, 619 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86937 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95529occurred in iteration=21, InterpolantAutomatonStates: 196, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 172618 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 1568 NumberOfCodeBlocks, 1568 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1872 ConstructedInterpolants, 0 QuantifiedInterpolants, 12252 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1311 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 32 InterpolantComputations, 17 PerfectInterpolantSequences, 193/272 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown