/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:01:19,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:01:19,776 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:01:19,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:01:19,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:01:19,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:01:19,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:01:19,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:01:19,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:01:19,811 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:01:19,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:01:19,812 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:01:19,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:01:19,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:01:19,813 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:01:19,813 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:01:19,813 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:01:19,813 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:01:19,814 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:01:19,814 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:01:19,814 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:01:19,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:01:19,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:01:19,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:01:19,829 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:01:19,829 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:01:19,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:01:19,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:01:19,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:01:19,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:01:19,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:01:19,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:01:19,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:01:19,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:01:19,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:01:19,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:01:19,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:01:19,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:01:19,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:01:19,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:01:19,831 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:01:19,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:01:19,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:01:19,832 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:01:20,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:01:20,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:01:20,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:01:20,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:01:20,024 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:01:20,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2023-12-16 02:01:21,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:01:22,127 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:01:22,128 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2023-12-16 02:01:22,158 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6288d03b/b3f4f813665346c68f262334e8cd7c03/FLAGce1553ca8 [2023-12-16 02:01:22,172 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6288d03b/b3f4f813665346c68f262334e8cd7c03 [2023-12-16 02:01:22,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:01:22,175 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:01:22,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:01:22,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:01:22,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:01:22,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:01:22" (1/1) ... [2023-12-16 02:01:22,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9299ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:22, skipping insertion in model container [2023-12-16 02:01:22,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:01:22" (1/1) ... [2023-12-16 02:01:22,316 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:01:22,557 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_label59.c[6607,6620] [2023-12-16 02:01:23,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:01:23,283 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:01:23,301 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_label59.c[6607,6620] [2023-12-16 02:01:23,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:01:23,624 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:01:23,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23 WrapperNode [2023-12-16 02:01:23,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:01:23,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:01:23,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:01:23,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:01:23,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:23,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:24,094 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-16 02:01:24,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:01:24,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:01:24,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:01:24,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:01:24,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:24,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:24,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:24,461 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:01:24,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:24,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:24,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:24,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:24,907 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:24,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:25,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:01:25,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:01:25,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:01:25,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:01:25,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (1/1) ... [2023-12-16 02:01:25,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:01:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:01:25,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:01:25,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:01:25,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:01:25,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:01:25,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:01:25,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:01:25,173 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:01:25,175 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:01:29,667 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:01:29,763 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:01:29,764 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:01:29,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:01:29 BoogieIcfgContainer [2023-12-16 02:01:29,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:01:29,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:01:29,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:01:29,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:01:29,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:01:22" (1/3) ... [2023-12-16 02:01:29,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e94bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:01:29, skipping insertion in model container [2023-12-16 02:01:29,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:23" (2/3) ... [2023-12-16 02:01:29,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e94bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:01:29, skipping insertion in model container [2023-12-16 02:01:29,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:01:29" (3/3) ... [2023-12-16 02:01:29,772 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label59.c [2023-12-16 02:01:29,785 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:01:29,785 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:01:29,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:01:29,855 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;@6b108dfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:01:29,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:01:29,863 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) [2023-12-16 02:01:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 02:01:29,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:01:29,871 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] [2023-12-16 02:01:29,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:01:29,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:01:29,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1485470434, now seen corresponding path program 1 times [2023-12-16 02:01:29,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:01:29,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114919543] [2023-12-16 02:01:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:01:29,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:01:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:01:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:01:30,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:01:30,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114919543] [2023-12-16 02:01:30,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114919543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:01:30,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:01:30,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:01:30,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077642220] [2023-12-16 02:01:30,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:01:30,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:01:30,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:01:30,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:01:30,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:01:30,076 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 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:01:30,187 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-16 02:01:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:01:30,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-16 02:01:30,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:01:30,252 INFO L225 Difference]: With dead ends: 2071 [2023-12-16 02:01:30,253 INFO L226 Difference]: Without dead ends: 1034 [2023-12-16 02:01:30,259 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 [2023-12-16 02:01:30,262 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 [2023-12-16 02:01:30,263 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] [2023-12-16 02:01:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-16 02:01:30,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-16 02:01:30,331 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) [2023-12-16 02:01:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-16 02:01:30,335 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 45 [2023-12-16 02:01:30,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:01:30,335 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-16 02:01:30,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-16 02:01:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 02:01:30,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:01:30,336 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] [2023-12-16 02:01:30,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:01:30,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:01:30,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:01:30,337 INFO L85 PathProgramCache]: Analyzing trace with hash -453512909, now seen corresponding path program 1 times [2023-12-16 02:01:30,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:01:30,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280745230] [2023-12-16 02:01:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:01:30,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:01:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:01:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:01:30,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:01:30,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280745230] [2023-12-16 02:01:30,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280745230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:01:30,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:01:30,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:01:30,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225404719] [2023-12-16 02:01:30,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:01:30,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:01:30,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:01:30,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:01:30,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:01:30,516 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:01:34,573 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2023-12-16 02:01:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:01:34,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-16 02:01:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:01:34,581 INFO L225 Difference]: With dead ends: 3015 [2023-12-16 02:01:34,581 INFO L226 Difference]: Without dead ends: 1982 [2023-12-16 02:01:34,582 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 [2023-12-16 02:01:34,583 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1009 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:01:34,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-16 02:01:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-12-16 02:01:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2023-12-16 02:01:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2023-12-16 02:01:34,620 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 45 [2023-12-16 02:01:34,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:01:34,621 INFO L495 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2023-12-16 02:01:34,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2023-12-16 02:01:34,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 02:01:34,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:01:34,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:01:34,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:01:34,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:01:34,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:01:34,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1617916151, now seen corresponding path program 1 times [2023-12-16 02:01:34,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:01:34,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776129117] [2023-12-16 02:01:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:01:34,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:01:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:01:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:01:34,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:01:34,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776129117] [2023-12-16 02:01:34,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776129117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:01:34,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:01:34,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:01:34,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911596541] [2023-12-16 02:01:34,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:01:34,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:01:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:01:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:01:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:01:34,885 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:01:38,327 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2023-12-16 02:01:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:01:38,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-16 02:01:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:01:38,351 INFO L225 Difference]: With dead ends: 5455 [2023-12-16 02:01:38,351 INFO L226 Difference]: Without dead ends: 3527 [2023-12-16 02:01:38,354 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 [2023-12-16 02:01:38,354 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:01:38,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-16 02:01:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2023-12-16 02:01:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2023-12-16 02:01:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2023-12-16 02:01:38,514 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 110 [2023-12-16 02:01:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:01:38,515 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2023-12-16 02:01:38,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2023-12-16 02:01:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-16 02:01:38,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:01:38,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:01:38,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:01:38,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:01:38,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:01:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2110228838, now seen corresponding path program 1 times [2023-12-16 02:01:38,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:01:38,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976696886] [2023-12-16 02:01:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:01:38,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:01:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:01:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:01:38,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:01:38,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976696886] [2023-12-16 02:01:38,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976696886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:01:38,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:01:38,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:01:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119807773] [2023-12-16 02:01:38,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:01:38,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:01:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:01:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:01:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:01:38,666 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:42,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:01:42,099 INFO L93 Difference]: Finished difference Result 10233 states and 16097 transitions. [2023-12-16 02:01:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:01:42,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-12-16 02:01:42,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:01:42,133 INFO L225 Difference]: With dead ends: 10233 [2023-12-16 02:01:42,133 INFO L226 Difference]: Without dead ends: 6709 [2023-12-16 02:01:42,141 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 [2023-12-16 02:01:42,164 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 973 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:01:42,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 850 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-16 02:01:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6709 states. [2023-12-16 02:01:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6709 to 6699. [2023-12-16 02:01:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:42,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2023-12-16 02:01:42,268 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 116 [2023-12-16 02:01:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:01:42,269 INFO L495 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2023-12-16 02:01:42,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2023-12-16 02:01:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 02:01:42,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:01:42,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:01:42,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:01:42,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:01:42,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:01:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash -642343825, now seen corresponding path program 1 times [2023-12-16 02:01:42,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:01:42,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881558556] [2023-12-16 02:01:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:01:42,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:01:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:01:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:01:42,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:01:42,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881558556] [2023-12-16 02:01:42,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881558556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:01:42,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:01:42,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:01:42,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019482061] [2023-12-16 02:01:42,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:01:42,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:01:42,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:01:42,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:01:42,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:01:42,425 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:01:46,311 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2023-12-16 02:01:46,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:01:46,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2023-12-16 02:01:46,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:01:46,336 INFO L225 Difference]: With dead ends: 17442 [2023-12-16 02:01:46,336 INFO L226 Difference]: Without dead ends: 10744 [2023-12-16 02:01:46,346 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 [2023-12-16 02:01:46,346 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:01:46,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 02:01:46,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2023-12-16 02:01:46,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2023-12-16 02:01:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2023-12-16 02:01:46,623 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 146 [2023-12-16 02:01:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:01:46,624 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2023-12-16 02:01:46,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2023-12-16 02:01:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-16 02:01:46,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:01:46,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:01:46,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:01:46,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:01:46,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:01:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2002303798, now seen corresponding path program 1 times [2023-12-16 02:01:46,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:01:46,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542617651] [2023-12-16 02:01:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:01:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:01:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:01:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:01:46,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:01:46,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542617651] [2023-12-16 02:01:46,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542617651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:01:46,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:01:46,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:01:46,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292093313] [2023-12-16 02:01:46,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:01:46,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:01:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:01:46,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:01:46,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:01:46,884 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:01:49,524 INFO L93 Difference]: Finished difference Result 20548 states and 28118 transitions. [2023-12-16 02:01:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:01:49,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-16 02:01:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:01:49,574 INFO L225 Difference]: With dead ends: 20548 [2023-12-16 02:01:49,575 INFO L226 Difference]: Without dead ends: 10668 [2023-12-16 02:01:49,591 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 [2023-12-16 02:01:49,598 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:01:49,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1210 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 02:01:49,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2023-12-16 02:01:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 10668. [2023-12-16 02:01:49,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3539889378456924) internal successors, (14443), 10667 states have internal predecessors, (14443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14443 transitions. [2023-12-16 02:01:49,744 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14443 transitions. Word has length 156 [2023-12-16 02:01:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:01:49,744 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14443 transitions. [2023-12-16 02:01:49,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14443 transitions. [2023-12-16 02:01:49,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-16 02:01:49,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:01:49,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:01:49,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 02:01:49,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:01:49,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:01:49,746 INFO L85 PathProgramCache]: Analyzing trace with hash -807328180, now seen corresponding path program 1 times [2023-12-16 02:01:49,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:01:49,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128060079] [2023-12-16 02:01:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:01:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:01:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:01:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:01:49,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:01:49,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128060079] [2023-12-16 02:01:49,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128060079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:01:49,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:01:49,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:01:49,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719079197] [2023-12-16 02:01:49,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:01:49,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:01:49,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:01:49,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:01:49,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:01:49,841 INFO L87 Difference]: Start difference. First operand 10668 states and 14443 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:01:53,621 INFO L93 Difference]: Finished difference Result 29990 states and 41154 transitions. [2023-12-16 02:01:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:01:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2023-12-16 02:01:53,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:01:53,747 INFO L225 Difference]: With dead ends: 29990 [2023-12-16 02:01:53,747 INFO L226 Difference]: Without dead ends: 20110 [2023-12-16 02:01:53,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:01:53,778 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 891 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:01:53,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1985 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-16 02:01:53,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20110 states. [2023-12-16 02:01:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20110 to 19313. [2023-12-16 02:01:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19313 states, 19312 states have (on average 1.2808616404308202) internal successors, (24736), 19312 states have internal predecessors, (24736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19313 states to 19313 states and 24736 transitions. [2023-12-16 02:01:54,089 INFO L78 Accepts]: Start accepts. Automaton has 19313 states and 24736 transitions. Word has length 170 [2023-12-16 02:01:54,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:01:54,089 INFO L495 AbstractCegarLoop]: Abstraction has 19313 states and 24736 transitions. [2023-12-16 02:01:54,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:54,089 INFO L276 IsEmpty]: Start isEmpty. Operand 19313 states and 24736 transitions. [2023-12-16 02:01:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-16 02:01:54,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:01:54,092 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, 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] [2023-12-16 02:01:54,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 02:01:54,092 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:01:54,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:01:54,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2047428504, now seen corresponding path program 1 times [2023-12-16 02:01:54,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:01:54,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148043510] [2023-12-16 02:01:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:01:54,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:01:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:01:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-16 02:01:54,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:01:54,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148043510] [2023-12-16 02:01:54,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148043510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:01:54,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:01:54,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:01:54,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60183762] [2023-12-16 02:01:54,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:01:54,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:01:54,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:01:54,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:01:54,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:01:54,405 INFO L87 Difference]: Start difference. First operand 19313 states and 24736 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:01:57,825 INFO L93 Difference]: Finished difference Result 44943 states and 56955 transitions. [2023-12-16 02:01:57,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:01:57,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 257 [2023-12-16 02:01:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:01:57,869 INFO L225 Difference]: With dead ends: 44943 [2023-12-16 02:01:57,869 INFO L226 Difference]: Without dead ends: 25631 [2023-12-16 02:01:57,880 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 [2023-12-16 02:01:57,881 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:01:57,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1190 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 02:01:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25631 states. [2023-12-16 02:01:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25631 to 25621. [2023-12-16 02:01:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25621 states, 25620 states have (on average 1.2326307572209212) internal successors, (31580), 25620 states have internal predecessors, (31580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25621 states to 25621 states and 31580 transitions. [2023-12-16 02:01:58,196 INFO L78 Accepts]: Start accepts. Automaton has 25621 states and 31580 transitions. Word has length 257 [2023-12-16 02:01:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:01:58,196 INFO L495 AbstractCegarLoop]: Abstraction has 25621 states and 31580 transitions. [2023-12-16 02:01:58,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:01:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 25621 states and 31580 transitions. [2023-12-16 02:01:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-16 02:01:58,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:01:58,199 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, 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] [2023-12-16 02:01:58,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 02:01:58,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:01:58,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:01:58,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1992336918, now seen corresponding path program 1 times [2023-12-16 02:01:58,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:01:58,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404311596] [2023-12-16 02:01:58,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:01:58,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:01:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:01:58,341 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:01:58,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:01:58,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404311596] [2023-12-16 02:01:58,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404311596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:01:58,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:01:58,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:01:58,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827880309] [2023-12-16 02:01:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:01:58,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:01:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:01:58,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:01:58,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:01:58,343 INFO L87 Difference]: Start difference. First operand 25621 states and 31580 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:01,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:02:01,739 INFO L93 Difference]: Finished difference Result 72508 states and 89969 transitions. [2023-12-16 02:02:01,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:02:01,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2023-12-16 02:02:01,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:02:01,795 INFO L225 Difference]: With dead ends: 72508 [2023-12-16 02:02:01,795 INFO L226 Difference]: Without dead ends: 47675 [2023-12-16 02:02:01,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:02:01,827 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 826 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:02:01,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 896 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 02:02:01,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47675 states. [2023-12-16 02:02:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47675 to 46090. [2023-12-16 02:02:02,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46090 states, 46089 states have (on average 1.185141790882857) internal successors, (54622), 46089 states have internal predecessors, (54622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46090 states to 46090 states and 54622 transitions. [2023-12-16 02:02:02,460 INFO L78 Accepts]: Start accepts. Automaton has 46090 states and 54622 transitions. Word has length 272 [2023-12-16 02:02:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:02:02,460 INFO L495 AbstractCegarLoop]: Abstraction has 46090 states and 54622 transitions. [2023-12-16 02:02:02,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 46090 states and 54622 transitions. [2023-12-16 02:02:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-16 02:02:02,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:02:02,464 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, 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, 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] [2023-12-16 02:02:02,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 02:02:02,464 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:02:02,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:02:02,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1596347728, now seen corresponding path program 1 times [2023-12-16 02:02:02,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:02:02,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465396244] [2023-12-16 02:02:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:02:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:02:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:02:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 87 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:02:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:02:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465396244] [2023-12-16 02:02:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465396244] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:02:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58013404] [2023-12-16 02:02:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:02:04,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:02:04,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:02:04,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:02:04,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:02:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:02:04,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:02:04,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:02:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-16 02:02:04,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:02:04,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58013404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:02:04,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:02:04,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-16 02:02:04,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850736374] [2023-12-16 02:02:04,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:02:04,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:02:04,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:02:04,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:02:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:02:04,464 INFO L87 Difference]: Start difference. First operand 46090 states and 54622 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:02:07,824 INFO L93 Difference]: Finished difference Result 91390 states and 108450 transitions. [2023-12-16 02:02:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:02:07,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 286 [2023-12-16 02:02:07,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:02:07,881 INFO L225 Difference]: With dead ends: 91390 [2023-12-16 02:02:07,881 INFO L226 Difference]: Without dead ends: 46088 [2023-12-16 02:02:07,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:02:07,914 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1160 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:02:07,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1438 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 02:02:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46088 states. [2023-12-16 02:02:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46088 to 46087. [2023-12-16 02:02:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46087 states, 46086 states have (on average 1.1506965238901186) internal successors, (53031), 46086 states have internal predecessors, (53031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46087 states to 46087 states and 53031 transitions. [2023-12-16 02:02:08,791 INFO L78 Accepts]: Start accepts. Automaton has 46087 states and 53031 transitions. Word has length 286 [2023-12-16 02:02:08,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:02:08,791 INFO L495 AbstractCegarLoop]: Abstraction has 46087 states and 53031 transitions. [2023-12-16 02:02:08,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 46087 states and 53031 transitions. [2023-12-16 02:02:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-16 02:02:08,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:02:08,797 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, 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, 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] [2023-12-16 02:02:08,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 02:02:09,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 02:02:09,011 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:02:09,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:02:09,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1940985484, now seen corresponding path program 1 times [2023-12-16 02:02:09,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:02:09,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438364305] [2023-12-16 02:02:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:02:09,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:02:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:02:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 216 proven. 113 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 02:02:10,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:02:10,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438364305] [2023-12-16 02:02:10,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438364305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:02:10,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929276398] [2023-12-16 02:02:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:02:10,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:02:10,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:02:10,257 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:02:10,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:02:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:02:10,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:02:10,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:02:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-16 02:02:10,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:02:10,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929276398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:02:10,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:02:10,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-16 02:02:10,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061830883] [2023-12-16 02:02:10,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:02:10,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:02:10,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:02:10,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:02:10,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:02:10,436 INFO L87 Difference]: Start difference. First operand 46087 states and 53031 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:02:13,502 INFO L93 Difference]: Finished difference Result 91375 states and 105259 transitions. [2023-12-16 02:02:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:02:13,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 351 [2023-12-16 02:02:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:02:13,572 INFO L225 Difference]: With dead ends: 91375 [2023-12-16 02:02:13,572 INFO L226 Difference]: Without dead ends: 46076 [2023-12-16 02:02:13,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:02:13,644 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1074 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:02:13,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 815 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 02:02:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46076 states. [2023-12-16 02:02:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46076 to 46073. [2023-12-16 02:02:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46073 states, 46072 states have (on average 1.1090467094981769) internal successors, (51096), 46072 states have internal predecessors, (51096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46073 states to 46073 states and 51096 transitions. [2023-12-16 02:02:14,484 INFO L78 Accepts]: Start accepts. Automaton has 46073 states and 51096 transitions. Word has length 351 [2023-12-16 02:02:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:02:14,485 INFO L495 AbstractCegarLoop]: Abstraction has 46073 states and 51096 transitions. [2023-12-16 02:02:14,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 46073 states and 51096 transitions. [2023-12-16 02:02:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2023-12-16 02:02:14,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:02:14,505 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, 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, 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] [2023-12-16 02:02:14,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:02:14,710 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 [2023-12-16 02:02:14,711 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:02:14,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:02:14,711 INFO L85 PathProgramCache]: Analyzing trace with hash 912369226, now seen corresponding path program 1 times [2023-12-16 02:02:14,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:02:14,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688219199] [2023-12-16 02:02:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:02:14,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:02:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:02:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-16 02:02:15,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:02:15,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688219199] [2023-12-16 02:02:15,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688219199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:02:15,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:02:15,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:02:15,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140460452] [2023-12-16 02:02:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:02:15,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:02:15,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:02:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:02:15,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:02:15,065 INFO L87 Difference]: Start difference. First operand 46073 states and 51096 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:02:22,233 INFO L93 Difference]: Finished difference Result 122258 states and 136282 transitions. [2023-12-16 02:02:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:02:22,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 393 [2023-12-16 02:02:22,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:02:22,340 INFO L225 Difference]: With dead ends: 122258 [2023-12-16 02:02:22,340 INFO L226 Difference]: Without dead ends: 76973 [2023-12-16 02:02:22,363 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 [2023-12-16 02:02:22,363 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1700 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 6752 mSolverCounterSat, 1002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 7754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1002 IncrementalHoareTripleChecker+Valid, 6752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:02:22,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 889 Invalid, 7754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 6752 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-16 02:02:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76973 states. [2023-12-16 02:02:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76973 to 57893. [2023-12-16 02:02:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57893 states, 57892 states have (on average 1.1003592897118772) internal successors, (63702), 57892 states have internal predecessors, (63702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57893 states to 57893 states and 63702 transitions. [2023-12-16 02:02:23,166 INFO L78 Accepts]: Start accepts. Automaton has 57893 states and 63702 transitions. Word has length 393 [2023-12-16 02:02:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:02:23,167 INFO L495 AbstractCegarLoop]: Abstraction has 57893 states and 63702 transitions. [2023-12-16 02:02:23,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:23,167 INFO L276 IsEmpty]: Start isEmpty. Operand 57893 states and 63702 transitions. [2023-12-16 02:02:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-16 02:02:23,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:02:23,173 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:02:23,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 02:02:23,174 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:02:23,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:02:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1852156812, now seen corresponding path program 1 times [2023-12-16 02:02:23,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:02:23,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996311810] [2023-12-16 02:02:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:02:23,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:02:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:02:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-16 02:02:23,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:02:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996311810] [2023-12-16 02:02:23,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996311810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:02:23,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:02:23,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:02:23,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594106361] [2023-12-16 02:02:23,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:02:23,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:02:23,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:02:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:02:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:02:23,627 INFO L87 Difference]: Start difference. First operand 57893 states and 63702 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:02:28,331 INFO L93 Difference]: Finished difference Result 139406 states and 154439 transitions. [2023-12-16 02:02:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:02:28,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 406 [2023-12-16 02:02:28,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:02:28,446 INFO L225 Difference]: With dead ends: 139406 [2023-12-16 02:02:28,446 INFO L226 Difference]: Without dead ends: 82301 [2023-12-16 02:02:28,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:02:28,472 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 830 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:02:28,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 831 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-16 02:02:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82301 states. [2023-12-16 02:02:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82301 to 80709. [2023-12-16 02:02:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80709 states, 80708 states have (on average 1.1005972146503444) internal successors, (88827), 80708 states have internal predecessors, (88827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80709 states to 80709 states and 88827 transitions. [2023-12-16 02:02:29,497 INFO L78 Accepts]: Start accepts. Automaton has 80709 states and 88827 transitions. Word has length 406 [2023-12-16 02:02:29,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:02:29,498 INFO L495 AbstractCegarLoop]: Abstraction has 80709 states and 88827 transitions. [2023-12-16 02:02:29,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:02:29,498 INFO L276 IsEmpty]: Start isEmpty. Operand 80709 states and 88827 transitions. [2023-12-16 02:02:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-16 02:02:29,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:02:29,505 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, 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, 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] [2023-12-16 02:02:29,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 02:02:29,505 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:02:29,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:02:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash 735073468, now seen corresponding path program 1 times [2023-12-16 02:02:29,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:02:29,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472613464] [2023-12-16 02:02:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:02:29,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:02:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:02:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-16 02:02:30,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:02:30,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472613464] [2023-12-16 02:02:30,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472613464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:02:30,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:02:30,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:02:30,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377185117] [2023-12-16 02:02:30,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:02:30,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:02:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:02:30,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:02:30,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:02:30,217 INFO L87 Difference]: Start difference. First operand 80709 states and 88827 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 02:02:31,492 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:02:31,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:02:31,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:02:31,513 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 407 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:02:31,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 142 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 02:02:31,514 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:02:31,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 02:02:31,519 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (80709states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (6952 states constructed, input type IntersectNwa). [2023-12-16 02:02:31,522 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:02:31,524 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:02:31,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:02:31 BoogieIcfgContainer [2023-12-16 02:02:31,526 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:02:31,527 INFO L158 Benchmark]: Toolchain (without parser) took 69351.76ms. Allocated memory was 229.6MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 162.4MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-16 02:02:31,527 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 157.3MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:02:31,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1448.45ms. Allocated memory is still 229.6MB. Free memory was 162.1MB in the beginning and 159.1MB in the end (delta: 3.0MB). Peak memory consumption was 94.6MB. Max. memory is 8.0GB. [2023-12-16 02:02:31,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 468.92ms. Allocated memory was 229.6MB in the beginning and 303.0MB in the end (delta: 73.4MB). Free memory was 159.1MB in the beginning and 156.5MB in the end (delta: 2.5MB). Peak memory consumption was 127.4MB. Max. memory is 8.0GB. [2023-12-16 02:02:31,536 INFO L158 Benchmark]: Boogie Preprocessor took 932.18ms. Allocated memory is still 303.0MB. Free memory was 156.5MB in the beginning and 119.1MB in the end (delta: 37.5MB). Peak memory consumption was 70.3MB. Max. memory is 8.0GB. [2023-12-16 02:02:31,537 INFO L158 Benchmark]: RCFGBuilder took 4735.86ms. Allocated memory was 303.0MB in the beginning and 1.1GB in the end (delta: 753.9MB). Free memory was 119.1MB in the beginning and 811.9MB in the end (delta: -692.8MB). Peak memory consumption was 293.3MB. Max. memory is 8.0GB. [2023-12-16 02:02:31,537 INFO L158 Benchmark]: TraceAbstraction took 61760.36ms. Allocated memory was 1.1GB in the beginning and 3.2GB in the end (delta: 2.2GB). Free memory was 810.9MB in the beginning and 2.1GB in the end (delta: -1.3GB). Peak memory consumption was 932.7MB. Max. memory is 8.0GB. [2023-12-16 02:02:31,544 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 157.3MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1448.45ms. Allocated memory is still 229.6MB. Free memory was 162.1MB in the beginning and 159.1MB in the end (delta: 3.0MB). Peak memory consumption was 94.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 468.92ms. Allocated memory was 229.6MB in the beginning and 303.0MB in the end (delta: 73.4MB). Free memory was 159.1MB in the beginning and 156.5MB in the end (delta: 2.5MB). Peak memory consumption was 127.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 932.18ms. Allocated memory is still 303.0MB. Free memory was 156.5MB in the beginning and 119.1MB in the end (delta: 37.5MB). Peak memory consumption was 70.3MB. Max. memory is 8.0GB. * RCFGBuilder took 4735.86ms. Allocated memory was 303.0MB in the beginning and 1.1GB in the end (delta: 753.9MB). Free memory was 119.1MB in the beginning and 811.9MB in the end (delta: -692.8MB). Peak memory consumption was 293.3MB. Max. memory is 8.0GB. * TraceAbstraction took 61760.36ms. Allocated memory was 1.1GB in the beginning and 3.2GB in the end (delta: 2.2GB). Free memory was 810.9MB in the beginning and 2.1GB in the end (delta: -1.3GB). Peak memory consumption was 932.7MB. 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: 160]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 160). Cancelled while NwaCegarLoop was constructing difference of abstraction (80709states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (6952 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.7s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 48.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12043 SdHoareTripleChecker+Valid, 44.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12043 mSDsluCounter, 14407 SdHoareTripleChecker+Invalid, 36.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1624 mSDsCounter, 7946 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36140 IncrementalHoareTripleChecker+Invalid, 44086 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7946 mSolverCounterUnsat, 12783 mSDtfsCounter, 36140 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 678 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80709occurred in iteration=13, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 23209 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 3816 NumberOfCodeBlocks, 3816 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3800 ConstructedInterpolants, 0 QuantifiedInterpolants, 14638 SizeOfPredicates, 0 NumberOfNonLiveVariables, 883 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 3174/3400 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