/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/Problem12_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:52:35,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:52:35,837 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 01:52:35,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:52:35,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:52:35,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:52:35,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:52:35,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:52:35,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:52:35,867 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:52:35,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:52:35,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:52:35,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:52:35,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:52:35,869 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:52:35,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:52:35,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:52:35,870 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:52:35,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:52:35,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:52:35,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:52:35,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:52:35,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:52:35,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:52:35,871 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:52:35,871 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:52:35,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:52:35,872 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:52:35,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:52:35,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:52:35,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:52:35,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:52:35,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:52:35,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:52:35,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:52:35,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:52:35,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:52:35,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:52:35,874 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:52:35,874 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:52:35,874 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:52:35,875 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:52:35,875 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:52:35,875 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:52:36,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:52:36,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:52:36,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:52:36,083 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:52:36,083 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:52:36,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label08.c [2023-12-16 01:52:37,214 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:52:37,731 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:52:37,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label08.c [2023-12-16 01:52:37,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df12ba11f/1ba805f6ef2b4b93b8ddef44669f358c/FLAGc67db00ef [2023-12-16 01:52:37,770 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df12ba11f/1ba805f6ef2b4b93b8ddef44669f358c [2023-12-16 01:52:37,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:52:37,772 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:52:37,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:52:37,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:52:37,777 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:52:37,778 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:52:37" (1/1) ... [2023-12-16 01:52:37,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a7360e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:37, skipping insertion in model container [2023-12-16 01:52:37,779 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:52:37" (1/1) ... [2023-12-16 01:52:38,005 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:52:38,316 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/Problem12_label08.c[3868,3881] [2023-12-16 01:52:39,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:52:39,390 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:52:39,412 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/Problem12_label08.c[3868,3881] [2023-12-16 01:52:40,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:52:40,231 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:52:40,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40 WrapperNode [2023-12-16 01:52:40,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:52:40,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:52:40,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:52:40,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:52:40,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:40,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:40,483 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2023-12-16 01:52:40,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:52:40,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:52:40,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:52:40,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:52:40,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:40,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:40,691 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:40,851 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 01:52:40,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:40,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:40,971 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:40,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:41,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:41,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:41,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:52:41,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:52:41,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:52:41,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:52:41,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (1/1) ... [2023-12-16 01:52:41,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:52:41,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:52:41,110 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 01:52:41,132 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 01:52:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:52:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:52:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:52:41,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:52:41,187 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:52:41,189 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:52:44,734 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:52:44,784 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:52:44,784 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 01:52:44,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:52:44 BoogieIcfgContainer [2023-12-16 01:52:44,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:52:44,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:52:44,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:52:44,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:52:44,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:52:37" (1/3) ... [2023-12-16 01:52:44,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32441114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:52:44, skipping insertion in model container [2023-12-16 01:52:44,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:40" (2/3) ... [2023-12-16 01:52:44,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32441114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:52:44, skipping insertion in model container [2023-12-16 01:52:44,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:52:44" (3/3) ... [2023-12-16 01:52:44,795 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label08.c [2023-12-16 01:52:44,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:52:44,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 01:52:44,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:52:44,862 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;@78aab1f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:52:44,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 01:52:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states 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 01:52:44,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 01:52:44,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:52:44,874 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] [2023-12-16 01:52:44,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:52:44,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:52:44,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1414716486, now seen corresponding path program 1 times [2023-12-16 01:52:44,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:52:44,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372193382] [2023-12-16 01:52:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:52:44,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:52:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:52:45,039 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 01:52:45,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:52:45,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372193382] [2023-12-16 01:52:45,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372193382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:52:45,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:52:45,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:52:45,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107620216] [2023-12-16 01:52:45,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:52:45,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:52:45,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:52:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:52:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:52:45,072 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 01:52:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:52:45,139 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-16 01:52:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:52:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-12-16 01:52:45,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:52:45,157 INFO L225 Difference]: With dead ends: 1511 [2023-12-16 01:52:45,158 INFO L226 Difference]: Without dead ends: 754 [2023-12-16 01:52:45,168 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 01:52:45,171 INFO L413 NwaCegarLoop]: 1438 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, 1438 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 01:52:45,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:52:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-16 01:52:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-16 01:52:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 01:52:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-16 01:52:45,238 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 28 [2023-12-16 01:52:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:52:45,238 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-16 01:52:45,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 01:52:45,239 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-16 01:52:45,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 01:52:45,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:52:45,239 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] [2023-12-16 01:52:45,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:52:45,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:52:45,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:52:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2058068714, now seen corresponding path program 1 times [2023-12-16 01:52:45,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:52:45,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666461976] [2023-12-16 01:52:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:52:45,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:52:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:52:45,394 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 01:52:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:52:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666461976] [2023-12-16 01:52:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666461976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:52:45,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:52:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:52:45,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821287968] [2023-12-16 01:52:45,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:52:45,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:52:45,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:52:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:52:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:52:45,396 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 01:52:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:52:49,107 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-12-16 01:52:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:52:49,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-12-16 01:52:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:52:49,120 INFO L225 Difference]: With dead ends: 2258 [2023-12-16 01:52:49,120 INFO L226 Difference]: Without dead ends: 1505 [2023-12-16 01:52:49,121 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 01:52:49,122 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 772 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:52:49,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 473 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-16 01:52:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-16 01:52:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-12-16 01:52:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6070478723404256) internal successors, (2417), 1504 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states 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 01:52:49,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2417 transitions. [2023-12-16 01:52:49,148 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2417 transitions. Word has length 28 [2023-12-16 01:52:49,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:52:49,148 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2417 transitions. [2023-12-16 01:52:49,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 01:52:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2417 transitions. [2023-12-16 01:52:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-16 01:52:49,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:52:49,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:49,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:52:49,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:52:49,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:52:49,151 INFO L85 PathProgramCache]: Analyzing trace with hash -681926908, now seen corresponding path program 1 times [2023-12-16 01:52:49,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:52:49,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409209242] [2023-12-16 01:52:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:52:49,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:52:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:52:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:52:49,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:52:49,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409209242] [2023-12-16 01:52:49,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409209242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:52:49,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:52:49,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:52:49,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254731979] [2023-12-16 01:52:49,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:52:49,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:52:49,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:52:49,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:52:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:52:49,279 INFO L87 Difference]: Start difference. First operand 1505 states and 2417 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:52:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:52:52,370 INFO L93 Difference]: Finished difference Result 4511 states and 7248 transitions. [2023-12-16 01:52:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:52:52,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-16 01:52:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:52:52,380 INFO L225 Difference]: With dead ends: 4511 [2023-12-16 01:52:52,380 INFO L226 Difference]: Without dead ends: 3007 [2023-12-16 01:52:52,382 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 01:52:52,383 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 774 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:52:52,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 447 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 01:52:52,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2023-12-16 01:52:52,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2023-12-16 01:52:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.4158349966733201) internal successors, (4256), 3006 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states 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 01:52:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4256 transitions. [2023-12-16 01:52:52,423 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4256 transitions. Word has length 103 [2023-12-16 01:52:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:52:52,424 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4256 transitions. [2023-12-16 01:52:52,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:52:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4256 transitions. [2023-12-16 01:52:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-16 01:52:52,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:52:52,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:52,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:52:52,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:52:52,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:52:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash 41292393, now seen corresponding path program 1 times [2023-12-16 01:52:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:52:52,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563362571] [2023-12-16 01:52:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:52:52,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:52:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:52:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:52:52,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:52:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563362571] [2023-12-16 01:52:52,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563362571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:52:52,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:52:52,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:52:52,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338847153] [2023-12-16 01:52:52,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:52:52,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:52:52,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:52:52,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:52:52,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:52:52,650 INFO L87 Difference]: Start difference. First operand 3007 states and 4256 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 01:52:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:52:57,063 INFO L93 Difference]: Finished difference Result 9768 states and 13600 transitions. [2023-12-16 01:52:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:52:57,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-16 01:52:57,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:52:57,079 INFO L225 Difference]: With dead ends: 9768 [2023-12-16 01:52:57,079 INFO L226 Difference]: Without dead ends: 6762 [2023-12-16 01:52:57,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:52:57,082 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 2179 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4713 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:52:57,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2179 Valid, 164 Invalid, 5460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4713 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-16 01:52:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2023-12-16 01:52:57,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2023-12-16 01:52:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.350835675195977) internal successors, (9133), 6761 states have internal predecessors, (9133), 0 states have call successors, (0), 0 states 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 01:52:57,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 9133 transitions. [2023-12-16 01:52:57,169 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 9133 transitions. Word has length 105 [2023-12-16 01:52:57,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:52:57,169 INFO L495 AbstractCegarLoop]: Abstraction has 6762 states and 9133 transitions. [2023-12-16 01:52:57,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 01:52:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 9133 transitions. [2023-12-16 01:52:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-16 01:52:57,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:52:57,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:57,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:52:57,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:52:57,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:52:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1755593171, now seen corresponding path program 1 times [2023-12-16 01:52:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:52:57,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605025789] [2023-12-16 01:52:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:52:57,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:52:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:52:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:52:57,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:52:57,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605025789] [2023-12-16 01:52:57,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605025789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:52:57,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564063243] [2023-12-16 01:52:57,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:52:57,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:52:57,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:52:57,588 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 01:52:57,593 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 01:52:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:52:57,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:52:57,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:52:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 01:52:57,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:52:57,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564063243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:52:57,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:52:57,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-16 01:52:57,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493106259] [2023-12-16 01:52:57,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:52:57,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:52:57,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:52:57,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:52:57,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:52:57,871 INFO L87 Difference]: Start difference. First operand 6762 states and 9133 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:53:00,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:53:00,377 INFO L93 Difference]: Finished difference Result 15776 states and 21143 transitions. [2023-12-16 01:53:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:53:00,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2023-12-16 01:53:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:53:00,426 INFO L225 Difference]: With dead ends: 15776 [2023-12-16 01:53:00,426 INFO L226 Difference]: Without dead ends: 9766 [2023-12-16 01:53:00,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:53:00,437 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 712 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:53:00,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 154 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 01:53:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2023-12-16 01:53:00,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2023-12-16 01:53:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.2557091653865848) internal successors, (12262), 9765 states have internal predecessors, (12262), 0 states have call successors, (0), 0 states 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 01:53:00,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12262 transitions. [2023-12-16 01:53:00,657 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12262 transitions. Word has length 173 [2023-12-16 01:53:00,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:53:00,658 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 12262 transitions. [2023-12-16 01:53:00,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:53:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12262 transitions. [2023-12-16 01:53:00,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-16 01:53:00,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:53:00,663 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:53:00,681 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 01:53:00,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:53:00,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:53:00,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:53:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash 365467451, now seen corresponding path program 1 times [2023-12-16 01:53:00,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:53:00,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964279381] [2023-12-16 01:53:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:53:00,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:53:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:53:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-16 01:53:01,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:53:01,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964279381] [2023-12-16 01:53:01,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964279381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:53:01,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:53:01,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:53:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253549190] [2023-12-16 01:53:01,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:53:01,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:53:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:53:01,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:53:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:53:01,072 INFO L87 Difference]: Start difference. First operand 9766 states and 12262 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 01:53:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:53:04,628 INFO L93 Difference]: Finished difference Result 23286 states and 30151 transitions. [2023-12-16 01:53:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:53:04,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 240 [2023-12-16 01:53:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:53:04,658 INFO L225 Difference]: With dead ends: 23286 [2023-12-16 01:53:04,659 INFO L226 Difference]: Without dead ends: 14272 [2023-12-16 01:53:04,665 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 01:53:04,666 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 765 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:53:04,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 485 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-16 01:53:04,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14272 states. [2023-12-16 01:53:04,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14272 to 9766. [2023-12-16 01:53:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.2557091653865848) internal successors, (12262), 9765 states have internal predecessors, (12262), 0 states have call successors, (0), 0 states 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 01:53:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12262 transitions. [2023-12-16 01:53:04,817 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12262 transitions. Word has length 240 [2023-12-16 01:53:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:53:04,818 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 12262 transitions. [2023-12-16 01:53:04,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 01:53:04,819 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12262 transitions. [2023-12-16 01:53:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-16 01:53:04,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:53:04,827 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:53:04,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:53:04,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:53:04,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:53:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash 257045376, now seen corresponding path program 1 times [2023-12-16 01:53:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:53:04,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569021979] [2023-12-16 01:53:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:53:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:53:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:53:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-16 01:53:05,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:53:05,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569021979] [2023-12-16 01:53:05,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569021979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:53:05,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:53:05,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:53:05,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253039093] [2023-12-16 01:53:05,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:53:05,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:53:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:53:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:53:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:53:05,133 INFO L87 Difference]: Start difference. First operand 9766 states and 12262 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 01:53:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:53:07,974 INFO L93 Difference]: Finished difference Result 27043 states and 34471 transitions. [2023-12-16 01:53:07,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:53:07,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 241 [2023-12-16 01:53:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:53:08,035 INFO L225 Difference]: With dead ends: 27043 [2023-12-16 01:53:08,035 INFO L226 Difference]: Without dead ends: 18029 [2023-12-16 01:53:08,058 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 01:53:08,059 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:53:08,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 350 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 01:53:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18029 states. [2023-12-16 01:53:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18029 to 15774. [2023-12-16 01:53:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15773 states have (on average 1.222278577315666) internal successors, (19279), 15773 states have internal predecessors, (19279), 0 states have call successors, (0), 0 states 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 01:53:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 19279 transitions. [2023-12-16 01:53:08,512 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 19279 transitions. Word has length 241 [2023-12-16 01:53:08,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:53:08,512 INFO L495 AbstractCegarLoop]: Abstraction has 15774 states and 19279 transitions. [2023-12-16 01:53:08,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 01:53:08,512 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 19279 transitions. [2023-12-16 01:53:08,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-12-16 01:53:08,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:53:08,536 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:08,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:53:08,536 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:53:08,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:53:08,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1382730998, now seen corresponding path program 1 times [2023-12-16 01:53:08,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:53:08,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464550734] [2023-12-16 01:53:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:53:08,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:53:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:53:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-16 01:53:09,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:53:09,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464550734] [2023-12-16 01:53:09,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464550734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:53:09,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:53:09,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:53:09,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677979850] [2023-12-16 01:53:09,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:53:09,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:53:09,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:53:09,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:53:09,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:53:09,240 INFO L87 Difference]: Start difference. First operand 15774 states and 19279 transitions. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 01:53:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:53:12,457 INFO L93 Difference]: Finished difference Result 33086 states and 40330 transitions. [2023-12-16 01:53:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:53:12,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 336 [2023-12-16 01:53:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:53:12,499 INFO L225 Difference]: With dead ends: 33086 [2023-12-16 01:53:12,499 INFO L226 Difference]: Without dead ends: 18027 [2023-12-16 01:53:12,512 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 01:53:12,513 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 688 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3805 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 3904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:53:12,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 709 Invalid, 3904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3805 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 01:53:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18027 states. [2023-12-16 01:53:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18027 to 18027. [2023-12-16 01:53:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18027 states, 18026 states have (on average 1.1949406412959058) internal successors, (21540), 18026 states have internal predecessors, (21540), 0 states have call successors, (0), 0 states 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 01:53:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18027 states to 18027 states and 21540 transitions. [2023-12-16 01:53:12,949 INFO L78 Accepts]: Start accepts. Automaton has 18027 states and 21540 transitions. Word has length 336 [2023-12-16 01:53:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:53:12,950 INFO L495 AbstractCegarLoop]: Abstraction has 18027 states and 21540 transitions. [2023-12-16 01:53:12,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 01:53:12,950 INFO L276 IsEmpty]: Start isEmpty. Operand 18027 states and 21540 transitions. [2023-12-16 01:53:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-16 01:53:12,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:53:12,960 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 01:53:12,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:53:12,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:53:12,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:53:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1278060537, now seen corresponding path program 1 times [2023-12-16 01:53:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:53:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082969219] [2023-12-16 01:53:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:53:12,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:53:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:53:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 01:53:13,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:53:13,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082969219] [2023-12-16 01:53:13,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082969219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:53:13,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:53:13,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:53:13,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922564799] [2023-12-16 01:53:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:53:13,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:53:13,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:53:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:53:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:53:13,266 INFO L87 Difference]: Start difference. First operand 18027 states and 21540 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:53:16,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:53:16,368 INFO L93 Difference]: Finished difference Result 43563 states and 53106 transitions. [2023-12-16 01:53:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:53:16,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2023-12-16 01:53:16,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:53:16,404 INFO L225 Difference]: With dead ends: 43563 [2023-12-16 01:53:16,404 INFO L226 Difference]: Without dead ends: 26288 [2023-12-16 01:53:16,419 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 01:53:16,421 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 707 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:53:16,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 393 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [712 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 01:53:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2023-12-16 01:53:16,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 25537. [2023-12-16 01:53:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25537 states, 25536 states have (on average 1.1943922305764412) internal successors, (30500), 25536 states have internal predecessors, (30500), 0 states have call successors, (0), 0 states 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 01:53:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25537 states to 25537 states and 30500 transitions. [2023-12-16 01:53:16,769 INFO L78 Accepts]: Start accepts. Automaton has 25537 states and 30500 transitions. Word has length 351 [2023-12-16 01:53:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:53:16,770 INFO L495 AbstractCegarLoop]: Abstraction has 25537 states and 30500 transitions. [2023-12-16 01:53:16,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:53:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 25537 states and 30500 transitions. [2023-12-16 01:53:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-16 01:53:16,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:53:16,794 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:16,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:53:16,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:53:16,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:53:16,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1706879681, now seen corresponding path program 1 times [2023-12-16 01:53:16,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:53:16,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149109149] [2023-12-16 01:53:16,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:53:16,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:53:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:53:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 01:53:17,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:53:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149109149] [2023-12-16 01:53:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149109149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:53:17,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:53:17,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:53:17,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732552124] [2023-12-16 01:53:17,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:53:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:53:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:53:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:53:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:53:17,177 INFO L87 Difference]: Start difference. First operand 25537 states and 30500 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:53:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:53:20,001 INFO L93 Difference]: Finished difference Result 60085 states and 73354 transitions. [2023-12-16 01:53:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:53:20,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2023-12-16 01:53:20,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:53:20,090 INFO L225 Difference]: With dead ends: 60085 [2023-12-16 01:53:20,090 INFO L226 Difference]: Without dead ends: 35300 [2023-12-16 01:53:20,128 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 01:53:20,128 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 680 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 2706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:53:20,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1225 Invalid, 2706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 01:53:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35300 states. [2023-12-16 01:53:20,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35300 to 33047. [2023-12-16 01:53:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33047 states, 33046 states have (on average 1.1808993524178417) internal successors, (39024), 33046 states have internal predecessors, (39024), 0 states have call successors, (0), 0 states 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 01:53:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33047 states to 33047 states and 39024 transitions. [2023-12-16 01:53:20,745 INFO L78 Accepts]: Start accepts. Automaton has 33047 states and 39024 transitions. Word has length 379 [2023-12-16 01:53:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:53:20,746 INFO L495 AbstractCegarLoop]: Abstraction has 33047 states and 39024 transitions. [2023-12-16 01:53:20,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:53:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 33047 states and 39024 transitions. [2023-12-16 01:53:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-16 01:53:20,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:53:20,751 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:20,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 01:53:20,751 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:53:20,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:53:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash -614580297, now seen corresponding path program 1 times [2023-12-16 01:53:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:53:20,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256534921] [2023-12-16 01:53:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:53:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:53:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:53:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-16 01:53:21,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:53:21,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256534921] [2023-12-16 01:53:21,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256534921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:53:21,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:53:21,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:53:21,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482900265] [2023-12-16 01:53:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:53:21,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:53:21,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:53:21,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:53:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:53:21,101 INFO L87 Difference]: Start difference. First operand 33047 states and 39024 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:53:24,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:53:24,198 INFO L93 Difference]: Finished difference Result 75856 states and 91236 transitions. [2023-12-16 01:53:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:53:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2023-12-16 01:53:24,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:53:24,408 INFO L225 Difference]: With dead ends: 75856 [2023-12-16 01:53:24,408 INFO L226 Difference]: Without dead ends: 43561 [2023-12-16 01:53:24,426 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 01:53:24,438 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 673 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:53:24,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1293 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 01:53:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43561 states. [2023-12-16 01:53:24,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43561 to 43561. [2023-12-16 01:53:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43561 states, 43560 states have (on average 1.159435261707989) internal successors, (50505), 43560 states have internal predecessors, (50505), 0 states have call successors, (0), 0 states 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 01:53:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43561 states to 43561 states and 50505 transitions. [2023-12-16 01:53:25,011 INFO L78 Accepts]: Start accepts. Automaton has 43561 states and 50505 transitions. Word has length 383 [2023-12-16 01:53:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:53:25,012 INFO L495 AbstractCegarLoop]: Abstraction has 43561 states and 50505 transitions. [2023-12-16 01:53:25,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:53:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 43561 states and 50505 transitions. [2023-12-16 01:53:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-16 01:53:25,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:53:25,017 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:25,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:53:25,017 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:53:25,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:53:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1727694975, now seen corresponding path program 1 times [2023-12-16 01:53:25,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:53:25,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952985385] [2023-12-16 01:53:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:53:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:53:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:53:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 338 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:53:26,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:53:26,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952985385] [2023-12-16 01:53:26,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952985385] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:53:26,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985263346] [2023-12-16 01:53:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:53:26,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:53:26,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:53:26,975 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 01:53:26,992 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 01:53:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:53:27,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 01:53:27,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:53:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 246 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-16 01:53:27,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 01:53:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 246 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-16 01:53:27,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985263346] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 01:53:27,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 01:53:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2023-12-16 01:53:27,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589498276] [2023-12-16 01:53:27,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 01:53:27,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 01:53:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:53:27,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 01:53:27,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-16 01:53:27,886 INFO L87 Difference]: Start difference. First operand 43561 states and 50505 transitions. Second operand has 10 states, 10 states have (on average 78.1) internal successors, (781), 10 states have internal predecessors, (781), 0 states have call successors, (0), 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 01:53:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-16 01:53:50,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 01:53:50,297 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 14881 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 31635 mSolverCounterSat, 4244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14881 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 35879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4244 IncrementalHoareTripleChecker+Valid, 31635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:53:50,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14881 Valid, 255 Invalid, 35879 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4244 Valid, 31635 Invalid, 0 Unknown, 0 Unchecked, 21.1s Time] [2023-12-16 01:53:50,298 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 01:53:50,303 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 01:53:50,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 01:53:50,321 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:53:50,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 01:53:50,500 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (43561states) and FLOYD_HOARE automaton (currently 32 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (90835 states constructed, input type IntersectNwa). [2023-12-16 01:53:50,503 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:53:50,505 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:53:50,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:53:50 BoogieIcfgContainer [2023-12-16 01:53:50,506 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:53:50,507 INFO L158 Benchmark]: Toolchain (without parser) took 72734.31ms. Allocated memory was 223.3MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 156.0MB in the beginning and 893.8MB in the end (delta: -737.8MB). Peak memory consumption was 820.3MB. Max. memory is 8.0GB. [2023-12-16 01:53:50,507 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:53:50,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2457.42ms. Allocated memory is still 223.3MB. Free memory was 155.5MB in the beginning and 144.5MB in the end (delta: 11.0MB). Peak memory consumption was 87.4MB. Max. memory is 8.0GB. [2023-12-16 01:53:50,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 251.21ms. Allocated memory was 223.3MB in the beginning and 297.8MB in the end (delta: 74.4MB). Free memory was 144.5MB in the beginning and 196.9MB in the end (delta: -52.4MB). Peak memory consumption was 101.2MB. Max. memory is 8.0GB. [2023-12-16 01:53:50,507 INFO L158 Benchmark]: Boogie Preprocessor took 602.83ms. Allocated memory is still 297.8MB. Free memory was 196.9MB in the beginning and 141.9MB in the end (delta: 55.0MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. [2023-12-16 01:53:50,507 INFO L158 Benchmark]: RCFGBuilder took 3699.94ms. Allocated memory was 297.8MB in the beginning and 584.1MB in the end (delta: 286.3MB). Free memory was 141.9MB in the beginning and 280.8MB in the end (delta: -138.9MB). Peak memory consumption was 220.7MB. Max. memory is 8.0GB. [2023-12-16 01:53:50,508 INFO L158 Benchmark]: TraceAbstraction took 65716.12ms. Allocated memory was 584.1MB in the beginning and 1.6GB in the end (delta: 973.1MB). Free memory was 280.3MB in the beginning and 893.8MB in the end (delta: -613.5MB). Peak memory consumption was 583.0MB. Max. memory is 8.0GB. [2023-12-16 01:53:50,512 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2457.42ms. Allocated memory is still 223.3MB. Free memory was 155.5MB in the beginning and 144.5MB in the end (delta: 11.0MB). Peak memory consumption was 87.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 251.21ms. Allocated memory was 223.3MB in the beginning and 297.8MB in the end (delta: 74.4MB). Free memory was 144.5MB in the beginning and 196.9MB in the end (delta: -52.4MB). Peak memory consumption was 101.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 602.83ms. Allocated memory is still 297.8MB. Free memory was 196.9MB in the beginning and 141.9MB in the end (delta: 55.0MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. * RCFGBuilder took 3699.94ms. Allocated memory was 297.8MB in the beginning and 584.1MB in the end (delta: 286.3MB). Free memory was 141.9MB in the beginning and 280.8MB in the end (delta: -138.9MB). Peak memory consumption was 220.7MB. Max. memory is 8.0GB. * TraceAbstraction took 65716.12ms. Allocated memory was 584.1MB in the beginning and 1.6GB in the end (delta: 973.1MB). Free memory was 280.3MB in the beginning and 893.8MB in the end (delta: -613.5MB). Peak memory consumption was 583.0MB. 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: 109]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 109). Cancelled while NwaCegarLoop was constructing difference of abstraction (43561states) and FLOYD_HOARE automaton (currently 32 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (90835 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.7s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 55.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23679 SdHoareTripleChecker+Valid, 51.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23679 mSDsluCounter, 7386 SdHoareTripleChecker+Invalid, 42.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 284 mSDsCounter, 10002 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58087 IncrementalHoareTripleChecker+Invalid, 68089 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10002 mSolverCounterUnsat, 7102 mSDtfsCounter, 58087 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1027 GetRequests, 981 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43561occurred in iteration=11, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 9765 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 3314 NumberOfCodeBlocks, 3314 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3686 ConstructedInterpolants, 0 QuantifiedInterpolants, 11695 SizeOfPredicates, 1 NumberOfNonLiveVariables, 765 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 2799/2930 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