/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:07:55,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:07:55,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:07:55,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:07:55,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:07:55,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:07:55,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:07:55,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:07:55,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:07:55,593 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:07:55,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:07:55,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:07:55,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:07:55,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:07:55,595 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:07:55,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:07:55,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:07:55,596 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:07:55,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:07:55,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:07:55,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:07:55,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:07:55,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:07:55,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:07:55,597 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:07:55,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:07:55,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:07:55,597 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:07:55,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:07:55,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:07:55,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:07:55,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:07:55,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:07:55,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:07:55,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:07:55,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:07:55,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:07:55,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:07:55,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:07:55,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:07:55,600 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:07:55,600 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:07:55,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:07:55,600 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:07:55,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:07:55,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:07:55,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:07:55,802 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:07:55,803 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:07:55,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label02.c [2023-12-15 19:07:56,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:07:57,232 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:07:57,233 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label02.c [2023-12-15 19:07:57,254 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44454731/1eed2b3b96ed45c68e2fb218b2b82317/FLAG3c20d5691 [2023-12-15 19:07:57,269 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44454731/1eed2b3b96ed45c68e2fb218b2b82317 [2023-12-15 19:07:57,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:07:57,272 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:07:57,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:07:57,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:07:57,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:07:57,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:07:57" (1/1) ... [2023-12-15 19:07:57,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170924d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:57, skipping insertion in model container [2023-12-15 19:07:57,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:07:57" (1/1) ... [2023-12-15 19:07:57,338 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:07:57,534 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label02.c[7859,7872] [2023-12-15 19:07:58,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:07:58,043 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:07:58,061 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label02.c[7859,7872] [2023-12-15 19:07:58,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:07:58,250 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:07:58,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58 WrapperNode [2023-12-15 19:07:58,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:07:58,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:07:58,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:07:58,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:07:58,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,499 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-15 19:07:58,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:07:58,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:07:58,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:07:58,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:07:58,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,706 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:07:58,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,811 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:07:58,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:07:58,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:07:58,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:07:58,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (1/1) ... [2023-12-15 19:07:58,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:07:58,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:07:58,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:07:59,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:07:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:07:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:07:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:07:59,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:07:59,136 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:07:59,138 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:08:01,433 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:08:01,466 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:08:01,466 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:08:01,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:08:01 BoogieIcfgContainer [2023-12-15 19:08:01,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:08:01,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:08:01,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:08:01,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:08:01,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:07:57" (1/3) ... [2023-12-15 19:08:01,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7823ec70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:08:01, skipping insertion in model container [2023-12-15 19:08:01,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:07:58" (2/3) ... [2023-12-15 19:08:01,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7823ec70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:08:01, skipping insertion in model container [2023-12-15 19:08:01,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:08:01" (3/3) ... [2023-12-15 19:08:01,472 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label02.c [2023-12-15 19:08:01,484 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:08:01,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:08:01,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:08:01,525 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;@7b7a9969, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:08:01,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:08:01,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-15 19:08:01,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:01,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:01,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:01,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash 966379391, now seen corresponding path program 1 times [2023-12-15 19:08:01,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:01,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692641752] [2023-12-15 19:08:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:01,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:01,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:01,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692641752] [2023-12-15 19:08:01,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692641752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:01,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:01,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:01,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790431494] [2023-12-15 19:08:01,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:01,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:08:01,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:01,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:08:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:08:01,687 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:01,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:01,734 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-15 19:08:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:08:01,736 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-15 19:08:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:01,745 INFO L225 Difference]: With dead ends: 1055 [2023-12-15 19:08:01,745 INFO L226 Difference]: Without dead ends: 526 [2023-12-15 19:08:01,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:08:01,751 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:01,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:08:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-15 19:08:01,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-15 19:08:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-15 19:08:01,795 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 52 [2023-12-15 19:08:01,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:01,795 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-15 19:08:01,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-15 19:08:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-15 19:08:01,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:01,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:01,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:08:01,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:01,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:01,797 INFO L85 PathProgramCache]: Analyzing trace with hash -548240351, now seen corresponding path program 1 times [2023-12-15 19:08:01,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:01,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188629954] [2023-12-15 19:08:01,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:01,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188629954] [2023-12-15 19:08:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188629954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:01,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:01,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:01,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197235993] [2023-12-15 19:08:01,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:01,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:01,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:01,978 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:03,891 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2023-12-15 19:08:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:03,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-15 19:08:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:03,896 INFO L225 Difference]: With dead ends: 1501 [2023-12-15 19:08:03,896 INFO L226 Difference]: Without dead ends: 976 [2023-12-15 19:08:03,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:03,898 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 419 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:03,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:08:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-15 19:08:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2023-12-15 19:08:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2023-12-15 19:08:03,936 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 52 [2023-12-15 19:08:03,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:03,936 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2023-12-15 19:08:03,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:03,936 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2023-12-15 19:08:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-15 19:08:03,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:03,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:03,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:08:03,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:03,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash -539654982, now seen corresponding path program 1 times [2023-12-15 19:08:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:03,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251724411] [2023-12-15 19:08:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:03,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:04,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:04,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251724411] [2023-12-15 19:08:04,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251724411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:04,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:04,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:04,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516747791] [2023-12-15 19:08:04,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:04,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:04,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:04,050 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:05,916 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2023-12-15 19:08:05,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:05,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-15 19:08:05,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:05,921 INFO L225 Difference]: With dead ends: 2812 [2023-12-15 19:08:05,922 INFO L226 Difference]: Without dead ends: 1843 [2023-12-15 19:08:05,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:05,924 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:05,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:08:05,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-15 19:08:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2023-12-15 19:08:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2023-12-15 19:08:05,946 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 119 [2023-12-15 19:08:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:05,947 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2023-12-15 19:08:05,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2023-12-15 19:08:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-15 19:08:05,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:05,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:05,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:08:05,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:05,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1953207092, now seen corresponding path program 1 times [2023-12-15 19:08:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:05,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357803871] [2023-12-15 19:08:05,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:06,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:06,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357803871] [2023-12-15 19:08:06,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357803871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:06,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:06,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:06,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372119622] [2023-12-15 19:08:06,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:06,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:08:06,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:06,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:08:06,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:08:06,164 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:09,093 INFO L93 Difference]: Finished difference Result 6764 states and 9257 transitions. [2023-12-15 19:08:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:09,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2023-12-15 19:08:09,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:09,109 INFO L225 Difference]: With dead ends: 6764 [2023-12-15 19:08:09,109 INFO L226 Difference]: Without dead ends: 4925 [2023-12-15 19:08:09,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:08:09,120 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 913 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:09,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 283 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 19:08:09,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2023-12-15 19:08:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4874. [2023-12-15 19:08:09,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4873 states have (on average 1.286476503180792) internal successors, (6269), 4873 states have internal predecessors, (6269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6269 transitions. [2023-12-15 19:08:09,186 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6269 transitions. Word has length 122 [2023-12-15 19:08:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:09,187 INFO L495 AbstractCegarLoop]: Abstraction has 4874 states and 6269 transitions. [2023-12-15 19:08:09,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:09,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6269 transitions. [2023-12-15 19:08:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-15 19:08:09,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:09,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:09,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:08:09,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:09,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash -220652911, now seen corresponding path program 1 times [2023-12-15 19:08:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:09,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177500911] [2023-12-15 19:08:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-15 19:08:09,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:09,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177500911] [2023-12-15 19:08:09,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177500911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:09,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:09,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:09,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001847631] [2023-12-15 19:08:09,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:09,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:09,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:09,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:09,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:09,403 INFO L87 Difference]: Start difference. First operand 4874 states and 6269 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:11,070 INFO L93 Difference]: Finished difference Result 14435 states and 18540 transitions. [2023-12-15 19:08:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 193 [2023-12-15 19:08:11,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:11,121 INFO L225 Difference]: With dead ends: 14435 [2023-12-15 19:08:11,121 INFO L226 Difference]: Without dead ends: 8276 [2023-12-15 19:08:11,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:11,139 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:11,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 588 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:08:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2023-12-15 19:08:11,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 6146. [2023-12-15 19:08:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 6145 states have (on average 1.1907241659886085) internal successors, (7317), 6145 states have internal predecessors, (7317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 7317 transitions. [2023-12-15 19:08:11,271 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 7317 transitions. Word has length 193 [2023-12-15 19:08:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:11,272 INFO L495 AbstractCegarLoop]: Abstraction has 6146 states and 7317 transitions. [2023-12-15 19:08:11,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 7317 transitions. [2023-12-15 19:08:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-15 19:08:11,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:11,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:11,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:08:11,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:11,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash -688032605, now seen corresponding path program 1 times [2023-12-15 19:08:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:11,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077669779] [2023-12-15 19:08:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:11,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 19:08:11,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077669779] [2023-12-15 19:08:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077669779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:11,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:11,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100262559] [2023-12-15 19:08:11,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:11,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:11,432 INFO L87 Difference]: Start difference. First operand 6146 states and 7317 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:13,109 INFO L93 Difference]: Finished difference Result 15691 states and 18896 transitions. [2023-12-15 19:08:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:13,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2023-12-15 19:08:13,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:13,146 INFO L225 Difference]: With dead ends: 15691 [2023-12-15 19:08:13,146 INFO L226 Difference]: Without dead ends: 9546 [2023-12-15 19:08:13,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:13,155 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 406 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:13,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 475 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:08:13,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2023-12-15 19:08:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 6123. [2023-12-15 19:08:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6122 states have (on average 1.1894805619078732) internal successors, (7282), 6122 states have internal predecessors, (7282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 7282 transitions. [2023-12-15 19:08:13,240 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 7282 transitions. Word has length 206 [2023-12-15 19:08:13,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:13,240 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 7282 transitions. [2023-12-15 19:08:13,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:13,240 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 7282 transitions. [2023-12-15 19:08:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-15 19:08:13,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:13,242 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:13,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:08:13,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:13,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash -359383224, now seen corresponding path program 1 times [2023-12-15 19:08:13,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:13,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353335857] [2023-12-15 19:08:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:13,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:13,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353335857] [2023-12-15 19:08:13,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353335857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:13,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:13,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:08:13,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673600182] [2023-12-15 19:08:13,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:13,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:08:13,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:13,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:08:13,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:08:13,627 INFO L87 Difference]: Start difference. First operand 6123 states and 7282 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:15,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:15,553 INFO L93 Difference]: Finished difference Result 16095 states and 19461 transitions. [2023-12-15 19:08:15,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:15,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2023-12-15 19:08:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:15,569 INFO L225 Difference]: With dead ends: 16095 [2023-12-15 19:08:15,569 INFO L226 Difference]: Without dead ends: 9973 [2023-12-15 19:08:15,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:08:15,574 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 1637 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:15,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 803 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:08:15,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2023-12-15 19:08:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9955. [2023-12-15 19:08:15,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9955 states, 9954 states have (on average 1.1716897729555957) internal successors, (11663), 9954 states have internal predecessors, (11663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:15,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9955 states to 9955 states and 11663 transitions. [2023-12-15 19:08:15,693 INFO L78 Accepts]: Start accepts. Automaton has 9955 states and 11663 transitions. Word has length 213 [2023-12-15 19:08:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:15,693 INFO L495 AbstractCegarLoop]: Abstraction has 9955 states and 11663 transitions. [2023-12-15 19:08:15,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 9955 states and 11663 transitions. [2023-12-15 19:08:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-15 19:08:15,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:15,696 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:15,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:08:15,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:15,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1999402442, now seen corresponding path program 1 times [2023-12-15 19:08:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:15,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672980303] [2023-12-15 19:08:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 240 proven. 70 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-15 19:08:16,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:16,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672980303] [2023-12-15 19:08:16,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672980303] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:16,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674637497] [2023-12-15 19:08:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:16,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:08:16,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:08:16,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:08:16,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:08:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:16,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:08:16,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:08:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 240 proven. 70 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-15 19:08:16,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:08:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-15 19:08:16,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674637497] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:16,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:08:16,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-15 19:08:16,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029576495] [2023-12-15 19:08:16,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:16,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:08:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:08:16,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:08:16,576 INFO L87 Difference]: Start difference. First operand 9955 states and 11663 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:19,508 INFO L93 Difference]: Finished difference Result 30574 states and 36166 transitions. [2023-12-15 19:08:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 276 [2023-12-15 19:08:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:19,537 INFO L225 Difference]: With dead ends: 30574 [2023-12-15 19:08:19,537 INFO L226 Difference]: Without dead ends: 19762 [2023-12-15 19:08:19,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:08:19,547 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 889 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:19,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 159 Invalid, 3001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 19:08:19,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19762 states. [2023-12-15 19:08:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19762 to 19759. [2023-12-15 19:08:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19759 states, 19758 states have (on average 1.1599858285251543) internal successors, (22919), 19758 states have internal predecessors, (22919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19759 states to 19759 states and 22919 transitions. [2023-12-15 19:08:19,753 INFO L78 Accepts]: Start accepts. Automaton has 19759 states and 22919 transitions. Word has length 276 [2023-12-15 19:08:19,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:19,753 INFO L495 AbstractCegarLoop]: Abstraction has 19759 states and 22919 transitions. [2023-12-15 19:08:19,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:19,754 INFO L276 IsEmpty]: Start isEmpty. Operand 19759 states and 22919 transitions. [2023-12-15 19:08:19,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-15 19:08:19,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:19,756 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:19,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:08:19,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:08:19,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:19,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:19,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2107349714, now seen corresponding path program 1 times [2023-12-15 19:08:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:19,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288061878] [2023-12-15 19:08:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:19,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-15 19:08:20,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288061878] [2023-12-15 19:08:20,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288061878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:20,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:20,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240358260] [2023-12-15 19:08:20,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:20,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:20,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:20,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:20,142 INFO L87 Difference]: Start difference. First operand 19759 states and 22919 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:21,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:21,743 INFO L93 Difference]: Finished difference Result 42908 states and 49988 transitions. [2023-12-15 19:08:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:21,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 289 [2023-12-15 19:08:21,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:21,780 INFO L225 Difference]: With dead ends: 42908 [2023-12-15 19:08:21,780 INFO L226 Difference]: Without dead ends: 23150 [2023-12-15 19:08:21,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:21,798 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 374 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:21,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 893 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:08:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23150 states. [2023-12-15 19:08:22,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23150 to 22724. [2023-12-15 19:08:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22724 states, 22723 states have (on average 1.1456233771949127) internal successors, (26032), 22723 states have internal predecessors, (26032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22724 states to 22724 states and 26032 transitions. [2023-12-15 19:08:22,232 INFO L78 Accepts]: Start accepts. Automaton has 22724 states and 26032 transitions. Word has length 289 [2023-12-15 19:08:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:22,232 INFO L495 AbstractCegarLoop]: Abstraction has 22724 states and 26032 transitions. [2023-12-15 19:08:22,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 22724 states and 26032 transitions. [2023-12-15 19:08:22,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-12-15 19:08:22,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:22,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:22,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:08:22,237 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:22,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:22,237 INFO L85 PathProgramCache]: Analyzing trace with hash -616915401, now seen corresponding path program 1 times [2023-12-15 19:08:22,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:22,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049145014] [2023-12-15 19:08:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:22,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:08:22,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:22,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049145014] [2023-12-15 19:08:22,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049145014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:22,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:22,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:08:22,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058048980] [2023-12-15 19:08:22,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:22,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:08:22,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:22,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:08:22,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:08:22,844 INFO L87 Difference]: Start difference. First operand 22724 states and 26032 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:26,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:26,191 INFO L93 Difference]: Finished difference Result 64236 states and 73653 transitions. [2023-12-15 19:08:26,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:26,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 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 312 [2023-12-15 19:08:26,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:26,381 INFO L225 Difference]: With dead ends: 64236 [2023-12-15 19:08:26,381 INFO L226 Difference]: Without dead ends: 38100 [2023-12-15 19:08:26,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:08:26,396 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 864 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:26,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 339 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 19:08:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38100 states. [2023-12-15 19:08:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38100 to 37203. [2023-12-15 19:08:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37203 states, 37202 states have (on average 1.1374657276490512) internal successors, (42316), 37202 states have internal predecessors, (42316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37203 states to 37203 states and 42316 transitions. [2023-12-15 19:08:26,826 INFO L78 Accepts]: Start accepts. Automaton has 37203 states and 42316 transitions. Word has length 312 [2023-12-15 19:08:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:26,826 INFO L495 AbstractCegarLoop]: Abstraction has 37203 states and 42316 transitions. [2023-12-15 19:08:26,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 37203 states and 42316 transitions. [2023-12-15 19:08:26,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-15 19:08:26,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:26,837 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:26,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 19:08:26,837 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:26,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:26,838 INFO L85 PathProgramCache]: Analyzing trace with hash -489797444, now seen corresponding path program 1 times [2023-12-15 19:08:26,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:26,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817061146] [2023-12-15 19:08:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:26,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-15 19:08:27,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:27,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817061146] [2023-12-15 19:08:27,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817061146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:27,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:27,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:27,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331583678] [2023-12-15 19:08:27,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:27,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:27,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:27,026 INFO L87 Difference]: Start difference. First operand 37203 states and 42316 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:28,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:28,839 INFO L93 Difference]: Finished difference Result 90181 states and 102745 transitions. [2023-12-15 19:08:28,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:28,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 327 [2023-12-15 19:08:28,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:28,908 INFO L225 Difference]: With dead ends: 90181 [2023-12-15 19:08:28,909 INFO L226 Difference]: Without dead ends: 51277 [2023-12-15 19:08:28,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:28,930 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 363 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:28,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 821 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:08:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51277 states. [2023-12-15 19:08:29,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51277 to 49990. [2023-12-15 19:08:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49990 states, 49989 states have (on average 1.1124647422432936) internal successors, (55611), 49989 states have internal predecessors, (55611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49990 states to 49990 states and 55611 transitions. [2023-12-15 19:08:29,661 INFO L78 Accepts]: Start accepts. Automaton has 49990 states and 55611 transitions. Word has length 327 [2023-12-15 19:08:29,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:29,662 INFO L495 AbstractCegarLoop]: Abstraction has 49990 states and 55611 transitions. [2023-12-15 19:08:29,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:29,662 INFO L276 IsEmpty]: Start isEmpty. Operand 49990 states and 55611 transitions. [2023-12-15 19:08:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-15 19:08:29,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:29,696 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:29,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:08:29,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:29,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:29,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2126956665, now seen corresponding path program 1 times [2023-12-15 19:08:29,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:29,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51187706] [2023-12-15 19:08:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:29,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 361 proven. 214 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-15 19:08:30,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:30,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51187706] [2023-12-15 19:08:30,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51187706] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:30,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758914958] [2023-12-15 19:08:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:30,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:08:30,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:08:30,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:08:30,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:08:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:30,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:08:30,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:08:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 381 proven. 73 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-15 19:08:30,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:08:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 454 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-15 19:08:30,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758914958] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:30,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:08:30,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2023-12-15 19:08:30,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384404640] [2023-12-15 19:08:30,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:30,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:08:30,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:30,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:08:30,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:08:30,553 INFO L87 Difference]: Start difference. First operand 49990 states and 55611 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:33,537 INFO L93 Difference]: Finished difference Result 118727 states and 132317 transitions. [2023-12-15 19:08:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:33,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 350 [2023-12-15 19:08:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:33,615 INFO L225 Difference]: With dead ends: 118727 [2023-12-15 19:08:33,615 INFO L226 Difference]: Without dead ends: 68738 [2023-12-15 19:08:33,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:08:33,739 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 922 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:33,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 179 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 19:08:33,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68738 states. [2023-12-15 19:08:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68738 to 64907. [2023-12-15 19:08:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64907 states, 64906 states have (on average 1.1170615967707145) internal successors, (72504), 64906 states have internal predecessors, (72504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64907 states to 64907 states and 72504 transitions. [2023-12-15 19:08:34,496 INFO L78 Accepts]: Start accepts. Automaton has 64907 states and 72504 transitions. Word has length 350 [2023-12-15 19:08:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:34,496 INFO L495 AbstractCegarLoop]: Abstraction has 64907 states and 72504 transitions. [2023-12-15 19:08:34,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 64907 states and 72504 transitions. [2023-12-15 19:08:34,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-15 19:08:34,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:34,500 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:34,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 19:08:34,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:08:34,705 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:34,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:34,706 INFO L85 PathProgramCache]: Analyzing trace with hash -901941483, now seen corresponding path program 1 times [2023-12-15 19:08:34,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:34,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243775575] [2023-12-15 19:08:34,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:34,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-15 19:08:35,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:35,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243775575] [2023-12-15 19:08:35,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243775575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:35,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:35,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:35,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224585613] [2023-12-15 19:08:35,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:35,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:35,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:35,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:35,011 INFO L87 Difference]: Start difference. First operand 64907 states and 72504 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:37,077 INFO L93 Difference]: Finished difference Result 142174 states and 159013 transitions. [2023-12-15 19:08:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 364 [2023-12-15 19:08:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:37,164 INFO L225 Difference]: With dead ends: 142174 [2023-12-15 19:08:37,164 INFO L226 Difference]: Without dead ends: 76832 [2023-12-15 19:08:37,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:37,184 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 469 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:37,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 299 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:08:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76832 states. [2023-12-15 19:08:37,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76832 to 73418. [2023-12-15 19:08:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73418 states, 73417 states have (on average 1.1121266191753953) internal successors, (81649), 73417 states have internal predecessors, (81649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73418 states to 73418 states and 81649 transitions. [2023-12-15 19:08:38,125 INFO L78 Accepts]: Start accepts. Automaton has 73418 states and 81649 transitions. Word has length 364 [2023-12-15 19:08:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:38,126 INFO L495 AbstractCegarLoop]: Abstraction has 73418 states and 81649 transitions. [2023-12-15 19:08:38,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 73418 states and 81649 transitions. [2023-12-15 19:08:38,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-15 19:08:38,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:38,152 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:38,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 19:08:38,153 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:38,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:38,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1699926725, now seen corresponding path program 1 times [2023-12-15 19:08:38,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:38,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206424841] [2023-12-15 19:08:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:38,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-15 19:08:38,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:38,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206424841] [2023-12-15 19:08:38,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206424841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:38,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:38,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:38,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111935217] [2023-12-15 19:08:38,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:38,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:38,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:38,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:38,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:38,883 INFO L87 Difference]: Start difference. First operand 73418 states and 81649 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:40,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:40,836 INFO L93 Difference]: Finished difference Result 163002 states and 181527 transitions. [2023-12-15 19:08:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:40,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 380 [2023-12-15 19:08:40,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:40,938 INFO L225 Difference]: With dead ends: 163002 [2023-12-15 19:08:40,938 INFO L226 Difference]: Without dead ends: 88308 [2023-12-15 19:08:40,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:40,985 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 388 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:40,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 816 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:08:41,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88308 states. [2023-12-15 19:08:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88308 to 72957. [2023-12-15 19:08:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72957 states, 72956 states have (on average 1.1109572893250725) internal successors, (81051), 72956 states have internal predecessors, (81051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72957 states to 72957 states and 81051 transitions. [2023-12-15 19:08:42,037 INFO L78 Accepts]: Start accepts. Automaton has 72957 states and 81051 transitions. Word has length 380 [2023-12-15 19:08:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:42,038 INFO L495 AbstractCegarLoop]: Abstraction has 72957 states and 81051 transitions. [2023-12-15 19:08:42,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 72957 states and 81051 transitions. [2023-12-15 19:08:42,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-12-15 19:08:42,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:42,043 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:42,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:08:42,043 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:42,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:42,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1280620064, now seen corresponding path program 1 times [2023-12-15 19:08:42,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:42,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210710824] [2023-12-15 19:08:42,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:42,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-15 19:08:42,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210710824] [2023-12-15 19:08:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210710824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:42,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:42,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:42,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583619936] [2023-12-15 19:08:42,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:42,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:42,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:42,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:42,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:42,435 INFO L87 Difference]: Start difference. First operand 72957 states and 81051 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:44,457 INFO L93 Difference]: Finished difference Result 166354 states and 185073 transitions. [2023-12-15 19:08:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:44,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 398 [2023-12-15 19:08:44,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:44,766 INFO L225 Difference]: With dead ends: 166354 [2023-12-15 19:08:44,766 INFO L226 Difference]: Without dead ends: 92968 [2023-12-15 19:08:44,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:44,795 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 408 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:44,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 360 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:08:44,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92968 states. [2023-12-15 19:08:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92968 to 88270. [2023-12-15 19:08:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88270 states, 88269 states have (on average 1.104929250359696) internal successors, (97531), 88269 states have internal predecessors, (97531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:45,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88270 states to 88270 states and 97531 transitions. [2023-12-15 19:08:45,982 INFO L78 Accepts]: Start accepts. Automaton has 88270 states and 97531 transitions. Word has length 398 [2023-12-15 19:08:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:45,982 INFO L495 AbstractCegarLoop]: Abstraction has 88270 states and 97531 transitions. [2023-12-15 19:08:45,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 88270 states and 97531 transitions. [2023-12-15 19:08:45,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-15 19:08:45,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:45,987 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:45,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:08:45,988 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:45,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash -881765910, now seen corresponding path program 1 times [2023-12-15 19:08:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:45,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042656560] [2023-12-15 19:08:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:45,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-15 19:08:46,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:46,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042656560] [2023-12-15 19:08:46,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042656560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:46,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:46,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:46,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337927736] [2023-12-15 19:08:46,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:46,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:46,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:46,116 INFO L87 Difference]: Start difference. First operand 88270 states and 97531 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:47,928 INFO L93 Difference]: Finished difference Result 185044 states and 204009 transitions. [2023-12-15 19:08:47,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:47,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 402 [2023-12-15 19:08:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:48,053 INFO L225 Difference]: With dead ends: 185044 [2023-12-15 19:08:48,053 INFO L226 Difference]: Without dead ends: 96774 [2023-12-15 19:08:48,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:48,093 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 387 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:48,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 313 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:08:48,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96774 states. [2023-12-15 19:08:49,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96774 to 91668. [2023-12-15 19:08:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91668 states, 91667 states have (on average 1.1009087239682764) internal successors, (100917), 91667 states have internal predecessors, (100917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91668 states to 91668 states and 100917 transitions. [2023-12-15 19:08:49,402 INFO L78 Accepts]: Start accepts. Automaton has 91668 states and 100917 transitions. Word has length 402 [2023-12-15 19:08:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:49,403 INFO L495 AbstractCegarLoop]: Abstraction has 91668 states and 100917 transitions. [2023-12-15 19:08:49,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 91668 states and 100917 transitions. [2023-12-15 19:08:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-15 19:08:49,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:49,411 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:49,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:08:49,411 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:49,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:49,412 INFO L85 PathProgramCache]: Analyzing trace with hash -867810567, now seen corresponding path program 1 times [2023-12-15 19:08:49,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:49,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143112917] [2023-12-15 19:08:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:49,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 367 proven. 51 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-15 19:08:50,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143112917] [2023-12-15 19:08:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143112917] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098980003] [2023-12-15 19:08:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:50,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:08:50,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:08:50,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:08:50,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:08:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:50,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:08:50,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:08:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 431 proven. 82 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-12-15 19:08:51,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:08:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 431 proven. 82 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-12-15 19:08:52,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098980003] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:08:52,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 19:08:52,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-12-15 19:08:52,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317132298] [2023-12-15 19:08:52,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 19:08:52,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 19:08:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:52,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 19:08:52,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:08:52,081 INFO L87 Difference]: Start difference. First operand 91668 states and 100917 transitions. Second operand has 9 states, 9 states have (on average 82.77777777777777) internal successors, (745), 9 states have internal predecessors, (745), 0 states have call successors, (0), 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... [2023-12-15 19:08:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 19:08:59,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-12-15 19:08:59,902 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 8865 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 9691 mSolverCounterSat, 1487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8865 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 11178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1487 IncrementalHoareTripleChecker+Valid, 9691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:59,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8865 Valid, 232 Invalid, 11178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1487 Valid, 9691 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-15 19:08:59,903 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:08:59,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:08:59,937 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:08:59,937 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:09:00,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:09:00,105 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (91668states) and FLOYD_HOARE automaton (currently 22 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (70466 states constructed, input type IntersectNwa). [2023-12-15 19:09:00,109 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:00,111 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:09:00,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:09:00 BoogieIcfgContainer [2023-12-15 19:09:00,113 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:09:00,114 INFO L158 Benchmark]: Toolchain (without parser) took 62841.48ms. Allocated memory was 169.9MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 113.7MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 19:09:00,114 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 169.9MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:09:00,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 976.44ms. Allocated memory was 169.9MB in the beginning and 313.5MB in the end (delta: 143.7MB). Free memory was 113.4MB in the beginning and 193.7MB in the end (delta: -80.3MB). Peak memory consumption was 63.9MB. Max. memory is 8.0GB. [2023-12-15 19:09:00,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 248.28ms. Allocated memory is still 313.5MB. Free memory was 193.7MB in the beginning and 130.3MB in the end (delta: 63.4MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-12-15 19:09:00,115 INFO L158 Benchmark]: Boogie Preprocessor took 460.20ms. Allocated memory is still 313.5MB. Free memory was 130.3MB in the beginning and 224.4MB in the end (delta: -94.1MB). Peak memory consumption was 96.4MB. Max. memory is 8.0GB. [2023-12-15 19:09:00,115 INFO L158 Benchmark]: RCFGBuilder took 2505.36ms. Allocated memory was 313.5MB in the beginning and 792.7MB in the end (delta: 479.2MB). Free memory was 224.3MB in the beginning and 665.0MB in the end (delta: -440.7MB). Peak memory consumption was 150.5MB. Max. memory is 8.0GB. [2023-12-15 19:09:00,118 INFO L158 Benchmark]: TraceAbstraction took 58645.30ms. Allocated memory was 792.7MB in the beginning and 5.3GB in the end (delta: 4.5GB). Free memory was 664.5MB in the beginning and 3.6GB in the end (delta: -2.9GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 19:09:00,120 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 169.9MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 976.44ms. Allocated memory was 169.9MB in the beginning and 313.5MB in the end (delta: 143.7MB). Free memory was 113.4MB in the beginning and 193.7MB in the end (delta: -80.3MB). Peak memory consumption was 63.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 248.28ms. Allocated memory is still 313.5MB. Free memory was 193.7MB in the beginning and 130.3MB in the end (delta: 63.4MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 460.20ms. Allocated memory is still 313.5MB. Free memory was 130.3MB in the beginning and 224.4MB in the end (delta: -94.1MB). Peak memory consumption was 96.4MB. Max. memory is 8.0GB. * RCFGBuilder took 2505.36ms. Allocated memory was 313.5MB in the beginning and 792.7MB in the end (delta: 479.2MB). Free memory was 224.3MB in the beginning and 665.0MB in the end (delta: -440.7MB). Peak memory consumption was 150.5MB. Max. memory is 8.0GB. * TraceAbstraction took 58645.30ms. Allocated memory was 792.7MB in the beginning and 5.3GB in the end (delta: 4.5GB). Free memory was 664.5MB in the beginning and 3.6GB in the end (delta: -2.9GB). Peak memory consumption was 1.6GB. 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: 177]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 177). Cancelled while NwaCegarLoop was constructing difference of abstraction (91668states) and FLOYD_HOARE automaton (currently 22 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (70466 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.6s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 42.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18095 SdHoareTripleChecker+Valid, 36.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18095 mSDsluCounter, 8520 SdHoareTripleChecker+Invalid, 30.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1235 mSDsCounter, 7965 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33660 IncrementalHoareTripleChecker+Invalid, 41625 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7965 mSolverCounterUnsat, 7285 mSDtfsCounter, 33660 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2193 GetRequests, 2145 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91668occurred in iteration=16, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 40644 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 5545 NumberOfCodeBlocks, 5545 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 6580 ConstructedInterpolants, 0 QuantifiedInterpolants, 18046 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1475 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 23 InterpolantComputations, 16 PerfectInterpolantSequences, 8536/9178 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