/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/Problem13_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:53:22,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:53:22,468 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 18:53:22,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:53:22,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:53:22,502 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:53:22,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:53:22,503 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:53:22,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:53:22,507 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:53:22,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:53:22,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:53:22,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:53:22,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:53:22,510 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:53:22,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:53:22,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:53:22,511 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:53:22,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:53:22,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:53:22,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:53:22,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:53:22,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:53:22,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:53:22,514 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:53:22,514 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:53:22,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:53:22,514 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:53:22,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:53:22,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:53:22,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:53:22,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:53:22,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:53:22,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:53:22,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:53:22,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:53:22,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:53:22,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:53:22,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:53:22,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:53:22,518 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:53:22,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:53:22,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:53:22,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:53:22,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:53:22,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:53:22,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:53:22,788 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:53:22,788 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:53:22,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09.c [2023-12-15 18:53:24,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:53:24,442 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:53:24,443 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label09.c [2023-12-15 18:53:24,481 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e5eae19/bea666dc67fa49d7a369417ff3bcf9de/FLAGe24e49943 [2023-12-15 18:53:24,496 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e5eae19/bea666dc67fa49d7a369417ff3bcf9de [2023-12-15 18:53:24,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:53:24,500 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:53:24,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:53:24,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:53:24,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:53:24,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:53:24" (1/1) ... [2023-12-15 18:53:24,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47515ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:24, skipping insertion in model container [2023-12-15 18:53:24,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:53:24" (1/1) ... [2023-12-15 18:53:24,638 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:53:24,916 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/Problem13_label09.c[8517,8530] [2023-12-15 18:53:25,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:53:25,669 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:53:25,702 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/Problem13_label09.c[8517,8530] [2023-12-15 18:53:26,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:53:26,176 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:53:26,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26 WrapperNode [2023-12-15 18:53:26,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:53:26,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:53:26,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:53:26,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:53:26,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:26,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:26,672 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-15 18:53:26,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:53:26,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:53:26,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:53:26,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:53:26,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:26,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:26,777 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:26,944 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 18:53:26,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:26,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:27,163 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:27,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:27,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:27,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:27,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:53:27,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:53:27,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:53:27,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:53:27,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (1/1) ... [2023-12-15 18:53:27,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:53:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:53:27,341 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 18:53:27,357 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 18:53:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:53:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:53:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:53:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:53:27,435 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:53:27,437 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:53:32,046 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:53:32,108 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:53:32,108 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:53:32,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:53:32 BoogieIcfgContainer [2023-12-15 18:53:32,109 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:53:32,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:53:32,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:53:32,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:53:32,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:53:24" (1/3) ... [2023-12-15 18:53:32,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca25aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:53:32, skipping insertion in model container [2023-12-15 18:53:32,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:26" (2/3) ... [2023-12-15 18:53:32,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca25aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:53:32, skipping insertion in model container [2023-12-15 18:53:32,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:53:32" (3/3) ... [2023-12-15 18:53:32,117 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09.c [2023-12-15 18:53:32,133 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:53:32,133 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:53:32,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:53:32,202 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;@64c0272b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:53:32,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:53:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states 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 18:53:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:53:32,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:32,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:32,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:32,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:32,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1108882586, now seen corresponding path program 1 times [2023-12-15 18:53:32,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:32,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101538429] [2023-12-15 18:53:32,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:32,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:32,371 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 18:53:32,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:32,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101538429] [2023-12-15 18:53:32,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101538429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:32,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:32,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:32,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065603162] [2023-12-15 18:53:32,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:32,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:53:32,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:32,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:53:32,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:53:32,406 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:32,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:32,504 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-15 18:53:32,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:53:32,509 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-15 18:53:32,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:32,532 INFO L225 Difference]: With dead ends: 2071 [2023-12-15 18:53:32,532 INFO L226 Difference]: Without dead ends: 1034 [2023-12-15 18:53:32,540 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 18:53:32,546 INFO L413 NwaCegarLoop]: 1876 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, 1876 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 18:53:32,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:53:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-15 18:53:32,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-15 18:53:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states 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 18:53:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-15 18:53:32,634 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 59 [2023-12-15 18:53:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:32,635 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-15 18:53:32,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:32,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-15 18:53:32,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:53:32,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:32,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:32,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:53:32,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:32,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1611547701, now seen corresponding path program 1 times [2023-12-15 18:53:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290717542] [2023-12-15 18:53:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:32,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:32,802 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 18:53:32,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:32,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290717542] [2023-12-15 18:53:32,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290717542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:32,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:32,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:32,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411557059] [2023-12-15 18:53:32,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:32,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:32,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:32,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:32,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:32,805 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:37,004 INFO L93 Difference]: Finished difference Result 2976 states and 5471 transitions. [2023-12-15 18:53:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:37,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-15 18:53:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:37,013 INFO L225 Difference]: With dead ends: 2976 [2023-12-15 18:53:37,013 INFO L226 Difference]: Without dead ends: 1943 [2023-12-15 18:53:37,014 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 18:53:37,015 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 895 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:37,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 538 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-15 18:53:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2023-12-15 18:53:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1872. [2023-12-15 18:53:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 1.7397113842864778) internal successors, (3255), 1871 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states 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 18:53:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3255 transitions. [2023-12-15 18:53:37,075 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3255 transitions. Word has length 59 [2023-12-15 18:53:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:37,076 INFO L495 AbstractCegarLoop]: Abstraction has 1872 states and 3255 transitions. [2023-12-15 18:53:37,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3255 transitions. [2023-12-15 18:53:37,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 18:53:37,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:37,085 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:37,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:53:37,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:37,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:37,087 INFO L85 PathProgramCache]: Analyzing trace with hash 996175873, now seen corresponding path program 1 times [2023-12-15 18:53:37,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:37,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964551815] [2023-12-15 18:53:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:37,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:53:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964551815] [2023-12-15 18:53:37,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964551815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:37,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669783591] [2023-12-15 18:53:37,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:37,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:37,318 INFO L87 Difference]: Start difference. First operand 1872 states and 3255 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:53:40,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:40,679 INFO L93 Difference]: Finished difference Result 5350 states and 9368 transitions. [2023-12-15 18:53:40,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:40,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-12-15 18:53:40,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:40,692 INFO L225 Difference]: With dead ends: 5350 [2023-12-15 18:53:40,693 INFO L226 Difference]: Without dead ends: 3479 [2023-12-15 18:53:40,695 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 18:53:40,696 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:40,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1077 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-15 18:53:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2023-12-15 18:53:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3478. [2023-12-15 18:53:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 1.5188380788035662) internal successors, (5281), 3477 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states 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 18:53:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5281 transitions. [2023-12-15 18:53:40,798 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5281 transitions. Word has length 124 [2023-12-15 18:53:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:40,799 INFO L495 AbstractCegarLoop]: Abstraction has 3478 states and 5281 transitions. [2023-12-15 18:53:40,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:53:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5281 transitions. [2023-12-15 18:53:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 18:53:40,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:40,801 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:40,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:53:40,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:40,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:40,808 INFO L85 PathProgramCache]: Analyzing trace with hash 302651964, now seen corresponding path program 1 times [2023-12-15 18:53:40,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:40,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030693232] [2023-12-15 18:53:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:40,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:53:40,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:40,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030693232] [2023-12-15 18:53:40,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030693232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:40,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:40,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:40,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711340380] [2023-12-15 18:53:40,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:40,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:40,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:40,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:40,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:40,996 INFO L87 Difference]: Start difference. First operand 3478 states and 5281 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:53:44,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:44,195 INFO L93 Difference]: Finished difference Result 10141 states and 15437 transitions. [2023-12-15 18:53:44,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:44,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-12-15 18:53:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:44,219 INFO L225 Difference]: With dead ends: 10141 [2023-12-15 18:53:44,219 INFO L226 Difference]: Without dead ends: 6664 [2023-12-15 18:53:44,226 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 18:53:44,227 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 976 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:44,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 875 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 18:53:44,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2023-12-15 18:53:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 6656. [2023-12-15 18:53:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6656 states, 6655 states have (on average 1.3729526671675432) internal successors, (9137), 6655 states have internal predecessors, (9137), 0 states have call successors, (0), 0 states 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 18:53:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 9137 transitions. [2023-12-15 18:53:44,332 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 9137 transitions. Word has length 126 [2023-12-15 18:53:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:44,333 INFO L495 AbstractCegarLoop]: Abstraction has 6656 states and 9137 transitions. [2023-12-15 18:53:44,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:53:44,333 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 9137 transitions. [2023-12-15 18:53:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:53:44,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:44,335 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, 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] [2023-12-15 18:53:44,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:53:44,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:44,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1137848109, now seen corresponding path program 1 times [2023-12-15 18:53:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:44,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413570148] [2023-12-15 18:53:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:44,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:53:44,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:44,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413570148] [2023-12-15 18:53:44,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413570148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:44,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:44,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:44,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783846126] [2023-12-15 18:53:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:44,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:44,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:44,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:44,483 INFO L87 Difference]: Start difference. First operand 6656 states and 9137 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 18:53:47,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:47,516 INFO L93 Difference]: Finished difference Result 19636 states and 26968 transitions. [2023-12-15 18:53:47,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:47,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2023-12-15 18:53:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:47,551 INFO L225 Difference]: With dead ends: 19636 [2023-12-15 18:53:47,552 INFO L226 Difference]: Without dead ends: 12981 [2023-12-15 18:53:47,563 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 18:53:47,564 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:47,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1161 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:53:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2023-12-15 18:53:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 12174. [2023-12-15 18:53:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12174 states, 12173 states have (on average 1.2529368274049124) internal successors, (15252), 12173 states have internal predecessors, (15252), 0 states have call successors, (0), 0 states 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 18:53:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12174 states to 12174 states and 15252 transitions. [2023-12-15 18:53:47,777 INFO L78 Accepts]: Start accepts. Automaton has 12174 states and 15252 transitions. Word has length 132 [2023-12-15 18:53:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:47,778 INFO L495 AbstractCegarLoop]: Abstraction has 12174 states and 15252 transitions. [2023-12-15 18:53:47,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 18:53:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 12174 states and 15252 transitions. [2023-12-15 18:53:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 18:53:47,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:47,783 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:47,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:53:47,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:47,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:47,784 INFO L85 PathProgramCache]: Analyzing trace with hash 872556869, now seen corresponding path program 1 times [2023-12-15 18:53:47,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:47,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222064250] [2023-12-15 18:53:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:47,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:53:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222064250] [2023-12-15 18:53:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222064250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:48,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:48,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:48,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673925646] [2023-12-15 18:53:48,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:48,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:48,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:48,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:48,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:48,106 INFO L87 Difference]: Start difference. First operand 12174 states and 15252 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 18:53:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:50,924 INFO L93 Difference]: Finished difference Result 25134 states and 31305 transitions. [2023-12-15 18:53:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:50,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-15 18:53:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:50,945 INFO L225 Difference]: With dead ends: 25134 [2023-12-15 18:53:50,945 INFO L226 Difference]: Without dead ends: 12961 [2023-12-15 18:53:50,954 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 18:53:50,955 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:50,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1210 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:53:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2023-12-15 18:53:51,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 12961. [2023-12-15 18:53:51,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12961 states, 12960 states have (on average 1.237962962962963) internal successors, (16044), 12960 states have internal predecessors, (16044), 0 states have call successors, (0), 0 states 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 18:53:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12961 states to 12961 states and 16044 transitions. [2023-12-15 18:53:51,138 INFO L78 Accepts]: Start accepts. Automaton has 12961 states and 16044 transitions. Word has length 148 [2023-12-15 18:53:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:51,138 INFO L495 AbstractCegarLoop]: Abstraction has 12961 states and 16044 transitions. [2023-12-15 18:53:51,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 18:53:51,139 INFO L276 IsEmpty]: Start isEmpty. Operand 12961 states and 16044 transitions. [2023-12-15 18:53:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-15 18:53:51,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:51,141 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, 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 18:53:51,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:53:51,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:51,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:51,142 INFO L85 PathProgramCache]: Analyzing trace with hash -233924468, now seen corresponding path program 1 times [2023-12-15 18:53:51,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:51,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665037571] [2023-12-15 18:53:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:51,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-15 18:53:51,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:51,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665037571] [2023-12-15 18:53:51,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665037571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:53:51,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828883209] [2023-12-15 18:53:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:51,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:53:51,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:53:51,496 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 18:53:51,503 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 18:53:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:51,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:53:51,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:53:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:53:51,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:53:51,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828883209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:51,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:53:51,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 18:53:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765107997] [2023-12-15 18:53:51,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:51,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:51,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:51,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:53:51,676 INFO L87 Difference]: Start difference. First operand 12961 states and 16044 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 18:53:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:54,985 INFO L93 Difference]: Finished difference Result 36955 states and 46071 transitions. [2023-12-15 18:53:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:54,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-15 18:53:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:55,035 INFO L225 Difference]: With dead ends: 36955 [2023-12-15 18:53:55,035 INFO L226 Difference]: Without dead ends: 24782 [2023-12-15 18:53:55,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:53:55,053 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 949 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 3510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:55,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 643 Invalid, 3510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [810 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 18:53:55,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24782 states. [2023-12-15 18:53:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24782 to 20844. [2023-12-15 18:53:55,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20844 states, 20843 states have (on average 1.2339874298325577) internal successors, (25720), 20843 states have internal predecessors, (25720), 0 states have call successors, (0), 0 states 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 18:53:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20844 states to 20844 states and 25720 transitions. [2023-12-15 18:53:55,420 INFO L78 Accepts]: Start accepts. Automaton has 20844 states and 25720 transitions. Word has length 155 [2023-12-15 18:53:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:55,421 INFO L495 AbstractCegarLoop]: Abstraction has 20844 states and 25720 transitions. [2023-12-15 18:53:55,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 18:53:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 20844 states and 25720 transitions. [2023-12-15 18:53:55,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-15 18:53:55,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:55,425 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, 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, 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 18:53:55,432 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 18:53:55,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:53:55,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:55,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1884625840, now seen corresponding path program 1 times [2023-12-15 18:53:55,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:55,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928466225] [2023-12-15 18:53:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:55,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-15 18:53:55,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:55,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928466225] [2023-12-15 18:53:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928466225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:55,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:55,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:55,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396071330] [2023-12-15 18:53:55,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:55,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:55,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:55,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:55,981 INFO L87 Difference]: Start difference. First operand 20844 states and 25720 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 18:53:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:58,916 INFO L93 Difference]: Finished difference Result 45641 states and 55812 transitions. [2023-12-15 18:53:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:58,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 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 271 [2023-12-15 18:53:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:58,955 INFO L225 Difference]: With dead ends: 45641 [2023-12-15 18:53:58,955 INFO L226 Difference]: Without dead ends: 25585 [2023-12-15 18:53:58,978 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 18:53:58,979 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:58,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1207 Invalid, 2717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:53:59,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25585 states. [2023-12-15 18:53:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25585 to 25576. [2023-12-15 18:53:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25576 states, 25575 states have (on average 1.205904203323558) internal successors, (30841), 25575 states have internal predecessors, (30841), 0 states have call successors, (0), 0 states 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 18:53:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25576 states to 25576 states and 30841 transitions. [2023-12-15 18:53:59,258 INFO L78 Accepts]: Start accepts. Automaton has 25576 states and 30841 transitions. Word has length 271 [2023-12-15 18:53:59,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:59,259 INFO L495 AbstractCegarLoop]: Abstraction has 25576 states and 30841 transitions. [2023-12-15 18:53:59,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 18:53:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 25576 states and 30841 transitions. [2023-12-15 18:53:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-15 18:53:59,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:59,266 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:53:59,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:53:59,266 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:59,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1016523045, now seen corresponding path program 1 times [2023-12-15 18:53:59,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:59,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356950991] [2023-12-15 18:53:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:59,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-15 18:53:59,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356950991] [2023-12-15 18:53:59,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356950991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:59,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:59,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:53:59,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742034828] [2023-12-15 18:53:59,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:59,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:59,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:59,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:59,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:59,438 INFO L87 Difference]: Start difference. First operand 25576 states and 30841 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 18:54:02,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:02,891 INFO L93 Difference]: Finished difference Result 63757 states and 78443 transitions. [2023-12-15 18:54:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:02,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 295 [2023-12-15 18:54:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:02,941 INFO L225 Difference]: With dead ends: 63757 [2023-12-15 18:54:02,941 INFO L226 Difference]: Without dead ends: 38969 [2023-12-15 18:54:02,967 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 18:54:02,968 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 887 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:02,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 954 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 18:54:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38969 states. [2023-12-15 18:54:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38969 to 36597. [2023-12-15 18:54:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36597 states, 36596 states have (on average 1.1913050606623674) internal successors, (43597), 36596 states have internal predecessors, (43597), 0 states have call successors, (0), 0 states 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 18:54:03,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36597 states to 36597 states and 43597 transitions. [2023-12-15 18:54:03,435 INFO L78 Accepts]: Start accepts. Automaton has 36597 states and 43597 transitions. Word has length 295 [2023-12-15 18:54:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:03,436 INFO L495 AbstractCegarLoop]: Abstraction has 36597 states and 43597 transitions. [2023-12-15 18:54:03,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 18:54:03,436 INFO L276 IsEmpty]: Start isEmpty. Operand 36597 states and 43597 transitions. [2023-12-15 18:54:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-15 18:54:03,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:03,443 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, 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, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:03,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:54:03,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:03,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash 235284741, now seen corresponding path program 1 times [2023-12-15 18:54:03,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:03,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713732010] [2023-12-15 18:54:03,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:03,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-15 18:54:03,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:03,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713732010] [2023-12-15 18:54:03,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713732010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:03,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:03,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:03,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910654112] [2023-12-15 18:54:03,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:03,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:54:03,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:03,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:54:03,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:54:03,685 INFO L87 Difference]: Start difference. First operand 36597 states and 43597 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:10,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:10,555 INFO L93 Difference]: Finished difference Result 106465 states and 128047 transitions. [2023-12-15 18:54:10,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:54:10,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2023-12-15 18:54:10,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:10,637 INFO L225 Difference]: With dead ends: 106465 [2023-12-15 18:54:10,637 INFO L226 Difference]: Without dead ends: 70656 [2023-12-15 18:54:10,664 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 18:54:10,664 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1717 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 6391 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 7427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 6391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:10,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 1081 Invalid, 7427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 6391 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-15 18:54:10,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70656 states. [2023-12-15 18:54:11,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70656 to 68961. [2023-12-15 18:54:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68961 states, 68960 states have (on average 1.1797853828306264) internal successors, (81358), 68960 states have internal predecessors, (81358), 0 states have call successors, (0), 0 states 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 18:54:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68961 states to 68961 states and 81358 transitions. [2023-12-15 18:54:11,552 INFO L78 Accepts]: Start accepts. Automaton has 68961 states and 81358 transitions. Word has length 347 [2023-12-15 18:54:11,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:11,553 INFO L495 AbstractCegarLoop]: Abstraction has 68961 states and 81358 transitions. [2023-12-15 18:54:11,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:11,553 INFO L276 IsEmpty]: Start isEmpty. Operand 68961 states and 81358 transitions. [2023-12-15 18:54:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-15 18:54:11,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:11,562 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, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-15 18:54:11,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:54:11,562 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:11,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:11,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1548304964, now seen corresponding path program 1 times [2023-12-15 18:54:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:11,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245198806] [2023-12-15 18:54:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:11,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 244 proven. 113 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-15 18:54:13,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:13,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245198806] [2023-12-15 18:54:13,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245198806] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:54:13,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415849177] [2023-12-15 18:54:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:13,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:54:13,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:54:13,125 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 18:54:13,131 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 18:54:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:13,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:54:13,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:54:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-15 18:54:13,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:54:13,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415849177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:13,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:54:13,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:54:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608406238] [2023-12-15 18:54:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:13,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:13,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:13,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:13,390 INFO L87 Difference]: Start difference. First operand 68961 states and 81358 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:16,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:16,892 INFO L93 Difference]: Finished difference Result 192416 states and 228152 transitions. [2023-12-15 18:54:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:16,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 365 [2023-12-15 18:54:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:17,037 INFO L225 Difference]: With dead ends: 192416 [2023-12-15 18:54:17,037 INFO L226 Difference]: Without dead ends: 124243 [2023-12-15 18:54:17,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:17,078 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 1075 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:17,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 926 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 2635 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:54:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124243 states. [2023-12-15 18:54:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124243 to 121066. [2023-12-15 18:54:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121066 states, 121065 states have (on average 1.1542394581423203) internal successors, (139738), 121065 states have internal predecessors, (139738), 0 states have call successors, (0), 0 states 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 18:54:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121066 states to 121066 states and 139738 transitions. [2023-12-15 18:54:18,737 INFO L78 Accepts]: Start accepts. Automaton has 121066 states and 139738 transitions. Word has length 365 [2023-12-15 18:54:18,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:18,738 INFO L495 AbstractCegarLoop]: Abstraction has 121066 states and 139738 transitions. [2023-12-15 18:54:18,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 121066 states and 139738 transitions. [2023-12-15 18:54:18,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-15 18:54:18,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:18,752 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:18,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:54:18,966 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,SelfDestructingSolverStorable10 [2023-12-15 18:54:18,966 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:18,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:18,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1804629883, now seen corresponding path program 1 times [2023-12-15 18:54:18,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:18,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847641673] [2023-12-15 18:54:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:18,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 481 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-12-15 18:54:19,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:19,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847641673] [2023-12-15 18:54:19,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847641673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:19,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:19,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:19,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294860422] [2023-12-15 18:54:19,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:19,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:19,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:19,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:19,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:19,279 INFO L87 Difference]: Start difference. First operand 121066 states and 139738 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 18:54:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:19,742 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 18:54:19,742 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 102 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:19,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 333 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:54:19,743 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:54:19,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:54:19,745 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (121066states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1451 states constructed, input type IntersectNwa). [2023-12-15 18:54:19,749 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:19,751 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:54:19,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:54:19 BoogieIcfgContainer [2023-12-15 18:54:19,753 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:54:19,754 INFO L158 Benchmark]: Toolchain (without parser) took 55254.02ms. Allocated memory was 196.1MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 118.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 917.6MB. Max. memory is 8.0GB. [2023-12-15 18:54:19,754 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 196.1MB. Free memory is still 148.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:54:19,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1674.53ms. Allocated memory was 196.1MB in the beginning and 319.8MB in the end (delta: 123.7MB). Free memory was 118.2MB in the beginning and 237.8MB in the end (delta: -119.6MB). Peak memory consumption was 173.1MB. Max. memory is 8.0GB. [2023-12-15 18:54:19,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 494.76ms. Allocated memory was 319.8MB in the beginning and 639.6MB in the end (delta: 319.8MB). Free memory was 237.3MB in the beginning and 506.2MB in the end (delta: -269.0MB). Peak memory consumption was 151.0MB. Max. memory is 8.0GB. [2023-12-15 18:54:19,755 INFO L158 Benchmark]: Boogie Preprocessor took 639.67ms. Allocated memory is still 639.6MB. Free memory was 506.2MB in the beginning and 459.8MB in the end (delta: 46.5MB). Peak memory consumption was 105.2MB. Max. memory is 8.0GB. [2023-12-15 18:54:19,755 INFO L158 Benchmark]: RCFGBuilder took 4795.80ms. Allocated memory was 639.6MB in the beginning and 1.3GB in the end (delta: 642.8MB). Free memory was 459.8MB in the beginning and 980.2MB in the end (delta: -520.4MB). Peak memory consumption was 209.4MB. Max. memory is 8.0GB. [2023-12-15 18:54:19,756 INFO L158 Benchmark]: TraceAbstraction took 47642.70ms. Allocated memory was 1.3GB in the beginning and 2.6GB in the end (delta: 1.4GB). Free memory was 979.7MB in the beginning and 1.6GB in the end (delta: -662.7MB). Peak memory consumption was 692.1MB. Max. memory is 8.0GB. [2023-12-15 18:54:19,757 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 196.1MB. Free memory is still 148.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1674.53ms. Allocated memory was 196.1MB in the beginning and 319.8MB in the end (delta: 123.7MB). Free memory was 118.2MB in the beginning and 237.8MB in the end (delta: -119.6MB). Peak memory consumption was 173.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 494.76ms. Allocated memory was 319.8MB in the beginning and 639.6MB in the end (delta: 319.8MB). Free memory was 237.3MB in the beginning and 506.2MB in the end (delta: -269.0MB). Peak memory consumption was 151.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 639.67ms. Allocated memory is still 639.6MB. Free memory was 506.2MB in the beginning and 459.8MB in the end (delta: 46.5MB). Peak memory consumption was 105.2MB. Max. memory is 8.0GB. * RCFGBuilder took 4795.80ms. Allocated memory was 639.6MB in the beginning and 1.3GB in the end (delta: 642.8MB). Free memory was 459.8MB in the beginning and 980.2MB in the end (delta: -520.4MB). Peak memory consumption was 209.4MB. Max. memory is 8.0GB. * TraceAbstraction took 47642.70ms. Allocated memory was 1.3GB in the beginning and 2.6GB in the end (delta: 1.4GB). Free memory was 979.7MB in the beginning and 1.6GB in the end (delta: -662.7MB). Peak memory consumption was 692.1MB. 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: 202]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 202). Cancelled while NwaCegarLoop was constructing difference of abstraction (121066states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1451 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.6s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 38.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9704 SdHoareTripleChecker+Valid, 34.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9704 mSDsluCounter, 11881 SdHoareTripleChecker+Invalid, 28.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1550 mSDsCounter, 6284 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30291 IncrementalHoareTripleChecker+Invalid, 36575 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6284 mSolverCounterUnsat, 10331 mSDtfsCounter, 30291 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 551 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121066occurred in iteration=11, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 12078 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 3014 NumberOfCodeBlocks, 3014 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3000 ConstructedInterpolants, 0 QuantifiedInterpolants, 10068 SizeOfPredicates, 0 NumberOfNonLiveVariables, 743 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 2735/2873 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