/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:02:28,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:02:28,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:02:28,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:02:28,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:02:28,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:02:28,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:02:28,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:02:28,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:02:28,202 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:02:28,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:02:28,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:02:28,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:02:28,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:02:28,205 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:02:28,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:02:28,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:02:28,205 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:02:28,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:02:28,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:02:28,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:02:28,206 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:02:28,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:02:28,206 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:02:28,206 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:02:28,206 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:02:28,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:02:28,207 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:02:28,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:02:28,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:02:28,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:02:28,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:02:28,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:02:28,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:02:28,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:02:28,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:02:28,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:02:28,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:02:28,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:02:28,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:02:28,209 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:02:28,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:02:28,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:02:28,210 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:02:28,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:02:28,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:02:28,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:02:28,393 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:02:28,393 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:02:28,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c [2023-12-15 18:02:29,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:02:29,917 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:02:29,918 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c [2023-12-15 18:02:29,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a568c0f4b/44e93d065d3a45a1b3961cc2a2bb22a1/FLAG6154e8bb8 [2023-12-15 18:02:29,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a568c0f4b/44e93d065d3a45a1b3961cc2a2bb22a1 [2023-12-15 18:02:29,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:02:29,967 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:02:29,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:02:29,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:02:29,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:02:29,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:02:29" (1/1) ... [2023-12-15 18:02:29,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd302e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:29, skipping insertion in model container [2023-12-15 18:02:29,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:02:29" (1/1) ... [2023-12-15 18:02:30,124 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:02:30,571 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c[26860,26873] [2023-12-15 18:02:30,627 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c[34608,34621] [2023-12-15 18:02:31,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:02:31,126 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:02:31,163 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c[26860,26873] [2023-12-15 18:02:31,170 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c[34608,34621] [2023-12-15 18:02:31,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:02:31,567 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:02:31,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31 WrapperNode [2023-12-15 18:02:31,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:02:31,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:02:31,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:02:31,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:02:31,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:31,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:31,945 INFO L138 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5285 [2023-12-15 18:02:31,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:02:31,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:02:31,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:02:31,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:02:31,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:31,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:32,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:32,181 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:02:32,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:32,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:32,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:32,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:32,424 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:32,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:32,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:02:32,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:02:32,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:02:32,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:02:32,509 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (1/1) ... [2023-12-15 18:02:32,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:02:32,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:02:32,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:02:32,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:02:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:02:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:02:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:02:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:02:32,729 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:02:32,731 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:02:36,506 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:02:36,575 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:02:36,575 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 18:02:36,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:02:36 BoogieIcfgContainer [2023-12-15 18:02:36,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:02:36,577 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:02:36,577 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:02:36,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:02:36,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:02:29" (1/3) ... [2023-12-15 18:02:36,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330feee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:02:36, skipping insertion in model container [2023-12-15 18:02:36,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:02:31" (2/3) ... [2023-12-15 18:02:36,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330feee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:02:36, skipping insertion in model container [2023-12-15 18:02:36,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:02:36" (3/3) ... [2023-12-15 18:02:36,581 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label09.c [2023-12-15 18:02:36,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:02:36,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:02:36,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:02:36,647 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;@3cfbc85b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:02:36,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:02:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 18:02:36,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:36,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:36,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:36,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash -98995374, now seen corresponding path program 1 times [2023-12-15 18:02:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:36,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532341959] [2023-12-15 18:02:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:36,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:36,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532341959] [2023-12-15 18:02:36,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532341959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:36,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:36,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:02:36,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584476290] [2023-12-15 18:02:36,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:36,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:02:36,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:36,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:02:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:02:36,987 INFO L87 Difference]: Start difference. First operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:37,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:37,084 INFO L93 Difference]: Finished difference Result 1699 states and 3336 transitions. [2023-12-15 18:02:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:02:37,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-15 18:02:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:37,105 INFO L225 Difference]: With dead ends: 1699 [2023-12-15 18:02:37,105 INFO L226 Difference]: Without dead ends: 878 [2023-12-15 18:02:37,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:02:37,115 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:37,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1661 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-12-15 18:02:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-12-15 18:02:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8961187214611872) internal successors, (1661), 877 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1661 transitions. [2023-12-15 18:02:37,189 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1661 transitions. Word has length 27 [2023-12-15 18:02:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:37,189 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1661 transitions. [2023-12-15 18:02:37,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1661 transitions. [2023-12-15 18:02:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 18:02:37,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:37,190 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] [2023-12-15 18:02:37,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:02:37,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:37,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1904433708, now seen corresponding path program 1 times [2023-12-15 18:02:37,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:37,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732797257] [2023-12-15 18:02:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:37,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:37,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:37,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732797257] [2023-12-15 18:02:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732797257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:37,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:37,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:02:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366650609] [2023-12-15 18:02:37,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:37,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:02:37,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:02:37,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:02:37,423 INFO L87 Difference]: Start difference. First operand 878 states and 1661 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:37,530 INFO L93 Difference]: Finished difference Result 940 states and 1760 transitions. [2023-12-15 18:02:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:02:37,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-15 18:02:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:37,534 INFO L225 Difference]: With dead ends: 940 [2023-12-15 18:02:37,534 INFO L226 Difference]: Without dead ends: 878 [2023-12-15 18:02:37,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:02:37,536 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 0 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:37,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4909 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:02:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-12-15 18:02:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-12-15 18:02:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.82648401826484) internal successors, (1600), 877 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1600 transitions. [2023-12-15 18:02:37,552 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1600 transitions. Word has length 27 [2023-12-15 18:02:37,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:37,552 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1600 transitions. [2023-12-15 18:02:37,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1600 transitions. [2023-12-15 18:02:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 18:02:37,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:37,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:37,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:02:37,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:37,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2028283093, now seen corresponding path program 1 times [2023-12-15 18:02:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:37,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090953186] [2023-12-15 18:02:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:37,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:37,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090953186] [2023-12-15 18:02:37,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090953186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:37,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:37,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:02:37,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952440217] [2023-12-15 18:02:37,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:37,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:02:37,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:02:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:02:37,935 INFO L87 Difference]: Start difference. First operand 878 states and 1600 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:42,247 INFO L93 Difference]: Finished difference Result 3133 states and 5909 transitions. [2023-12-15 18:02:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:02:42,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-15 18:02:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:42,254 INFO L225 Difference]: With dead ends: 3133 [2023-12-15 18:02:42,254 INFO L226 Difference]: Without dead ends: 2380 [2023-12-15 18:02:42,255 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 [2023-12-15 18:02:42,258 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 2508 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2508 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 6402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:42,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2508 Valid, 869 Invalid, 6402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-15 18:02:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2023-12-15 18:02:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2380. [2023-12-15 18:02:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2378 states have (on average 1.503784693019344) internal successors, (3576), 2379 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3576 transitions. [2023-12-15 18:02:42,343 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3576 transitions. Word has length 66 [2023-12-15 18:02:42,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:42,344 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 3576 transitions. [2023-12-15 18:02:42,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:42,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3576 transitions. [2023-12-15 18:02:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 18:02:42,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:42,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:42,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:02:42,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:42,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash -537635452, now seen corresponding path program 1 times [2023-12-15 18:02:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:42,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39182953] [2023-12-15 18:02:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:42,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:42,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:42,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39182953] [2023-12-15 18:02:42,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39182953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:42,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:42,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 18:02:42,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830273058] [2023-12-15 18:02:42,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:42,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:02:42,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:42,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:02:42,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:02:42,675 INFO L87 Difference]: Start difference. First operand 2380 states and 3576 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:43,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:43,105 INFO L93 Difference]: Finished difference Result 3324 states and 5112 transitions. [2023-12-15 18:02:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 18:02:43,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-12-15 18:02:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:43,115 INFO L225 Difference]: With dead ends: 3324 [2023-12-15 18:02:43,115 INFO L226 Difference]: Without dead ends: 3265 [2023-12-15 18:02:43,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-15 18:02:43,120 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 13341 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13341 SdHoareTripleChecker+Valid, 6272 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:43,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13341 Valid, 6272 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:02:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2023-12-15 18:02:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2437. [2023-12-15 18:02:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2435 states have (on average 1.506776180698152) internal successors, (3669), 2436 states have internal predecessors, (3669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3669 transitions. [2023-12-15 18:02:43,167 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3669 transitions. Word has length 87 [2023-12-15 18:02:43,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:43,168 INFO L495 AbstractCegarLoop]: Abstraction has 2437 states and 3669 transitions. [2023-12-15 18:02:43,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:43,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3669 transitions. [2023-12-15 18:02:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 18:02:43,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:43,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:43,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:02:43,173 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:43,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:43,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1411800044, now seen corresponding path program 1 times [2023-12-15 18:02:43,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:43,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140095452] [2023-12-15 18:02:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:43,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:43,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:43,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140095452] [2023-12-15 18:02:43,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140095452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:43,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:43,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:02:43,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934106544] [2023-12-15 18:02:43,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:43,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:02:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:02:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:43,269 INFO L87 Difference]: Start difference. First operand 2437 states and 3669 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:43,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:43,303 INFO L93 Difference]: Finished difference Result 2658 states and 4028 transitions. [2023-12-15 18:02:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:02:43,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-15 18:02:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:43,311 INFO L225 Difference]: With dead ends: 2658 [2023-12-15 18:02:43,311 INFO L226 Difference]: Without dead ends: 2542 [2023-12-15 18:02:43,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:43,314 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1504 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:43,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1685 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2023-12-15 18:02:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2540. [2023-12-15 18:02:43,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2538 states have (on average 1.5110323089046493) internal successors, (3835), 2539 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3835 transitions. [2023-12-15 18:02:43,355 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3835 transitions. Word has length 89 [2023-12-15 18:02:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:43,356 INFO L495 AbstractCegarLoop]: Abstraction has 2540 states and 3835 transitions. [2023-12-15 18:02:43,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3835 transitions. [2023-12-15 18:02:43,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 18:02:43,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:43,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:02:43,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:43,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1409655092, now seen corresponding path program 1 times [2023-12-15 18:02:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:43,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509096575] [2023-12-15 18:02:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:43,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:43,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:43,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509096575] [2023-12-15 18:02:43,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509096575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:43,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:43,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 18:02:43,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929249479] [2023-12-15 18:02:43,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:43,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:02:43,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:02:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:02:43,755 INFO L87 Difference]: Start difference. First operand 2540 states and 3835 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:44,106 INFO L93 Difference]: Finished difference Result 2761 states and 4191 transitions. [2023-12-15 18:02:44,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:02:44,107 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-15 18:02:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:44,114 INFO L225 Difference]: With dead ends: 2761 [2023-12-15 18:02:44,114 INFO L226 Difference]: Without dead ends: 2542 [2023-12-15 18:02:44,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:02:44,115 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 10612 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10612 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:44,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10612 Valid, 2234 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:02:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2023-12-15 18:02:44,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2540. [2023-12-15 18:02:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2538 states have (on average 1.5102442868400314) internal successors, (3833), 2539 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3833 transitions. [2023-12-15 18:02:44,149 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3833 transitions. Word has length 89 [2023-12-15 18:02:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:44,150 INFO L495 AbstractCegarLoop]: Abstraction has 2540 states and 3833 transitions. [2023-12-15 18:02:44,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3833 transitions. [2023-12-15 18:02:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-15 18:02:44,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:44,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:44,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:02:44,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:44,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:44,151 INFO L85 PathProgramCache]: Analyzing trace with hash -878537093, now seen corresponding path program 1 times [2023-12-15 18:02:44,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:44,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289640295] [2023-12-15 18:02:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:44,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:44,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289640295] [2023-12-15 18:02:44,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289640295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:44,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:44,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:02:44,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290337122] [2023-12-15 18:02:44,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:44,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:02:44,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:44,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:02:44,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:02:44,337 INFO L87 Difference]: Start difference. First operand 2540 states and 3833 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:44,373 INFO L93 Difference]: Finished difference Result 2548 states and 3842 transitions. [2023-12-15 18:02:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:02:44,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-15 18:02:44,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:44,381 INFO L225 Difference]: With dead ends: 2548 [2023-12-15 18:02:44,381 INFO L226 Difference]: Without dead ends: 2546 [2023-12-15 18:02:44,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:02:44,383 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4780 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:44,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4780 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:44,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2023-12-15 18:02:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2544. [2023-12-15 18:02:44,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2544 states, 2542 states have (on average 1.5090479937057435) internal successors, (3836), 2543 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 3836 transitions. [2023-12-15 18:02:44,421 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 3836 transitions. Word has length 90 [2023-12-15 18:02:44,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:44,421 INFO L495 AbstractCegarLoop]: Abstraction has 2544 states and 3836 transitions. [2023-12-15 18:02:44,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 3836 transitions. [2023-12-15 18:02:44,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 18:02:44,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:44,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:44,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:02:44,423 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:44,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1337202636, now seen corresponding path program 1 times [2023-12-15 18:02:44,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:44,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260565234] [2023-12-15 18:02:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:44,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:44,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:44,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260565234] [2023-12-15 18:02:44,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260565234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:44,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:44,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:02:44,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826565064] [2023-12-15 18:02:44,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:44,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:02:44,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:44,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:02:44,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:44,477 INFO L87 Difference]: Start difference. First operand 2544 states and 3836 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:44,505 INFO L93 Difference]: Finished difference Result 2778 states and 4209 transitions. [2023-12-15 18:02:44,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:02:44,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-15 18:02:44,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:44,513 INFO L225 Difference]: With dead ends: 2778 [2023-12-15 18:02:44,513 INFO L226 Difference]: Without dead ends: 2658 [2023-12-15 18:02:44,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:44,514 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1524 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:44,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1773 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2023-12-15 18:02:44,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2656. [2023-12-15 18:02:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2654 states have (on average 1.5120572720422005) internal successors, (4013), 2655 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 4013 transitions. [2023-12-15 18:02:44,551 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 4013 transitions. Word has length 91 [2023-12-15 18:02:44,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:44,552 INFO L495 AbstractCegarLoop]: Abstraction has 2656 states and 4013 transitions. [2023-12-15 18:02:44,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 4013 transitions. [2023-12-15 18:02:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 18:02:44,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:44,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:44,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:02:44,553 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:44,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:44,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1411815116, now seen corresponding path program 1 times [2023-12-15 18:02:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:44,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717863116] [2023-12-15 18:02:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:44,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:44,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:44,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717863116] [2023-12-15 18:02:44,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717863116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:44,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:44,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:02:44,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890487967] [2023-12-15 18:02:44,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:44,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:02:44,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:44,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:02:44,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:44,609 INFO L87 Difference]: Start difference. First operand 2656 states and 4013 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:44,642 INFO L93 Difference]: Finished difference Result 3298 states and 5033 transitions. [2023-12-15 18:02:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:02:44,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-15 18:02:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:44,650 INFO L225 Difference]: With dead ends: 3298 [2023-12-15 18:02:44,650 INFO L226 Difference]: Without dead ends: 2965 [2023-12-15 18:02:44,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:44,651 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1522 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:44,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2023-12-15 18:02:44,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2963. [2023-12-15 18:02:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2961 states have (on average 1.5180682201958797) internal successors, (4495), 2962 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4495 transitions. [2023-12-15 18:02:44,696 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4495 transitions. Word has length 91 [2023-12-15 18:02:44,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:44,696 INFO L495 AbstractCegarLoop]: Abstraction has 2963 states and 4495 transitions. [2023-12-15 18:02:44,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4495 transitions. [2023-12-15 18:02:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 18:02:44,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:44,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:44,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:02:44,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:44,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:44,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1756812492, now seen corresponding path program 1 times [2023-12-15 18:02:44,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:44,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941479137] [2023-12-15 18:02:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:44,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:44,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:44,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941479137] [2023-12-15 18:02:44,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941479137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:44,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:44,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:02:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085607289] [2023-12-15 18:02:44,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:44,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:02:44,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:02:44,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:44,750 INFO L87 Difference]: Start difference. First operand 2963 states and 4495 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:44,790 INFO L93 Difference]: Finished difference Result 4195 states and 6437 transitions. [2023-12-15 18:02:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:02:44,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-15 18:02:44,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:44,800 INFO L225 Difference]: With dead ends: 4195 [2023-12-15 18:02:44,800 INFO L226 Difference]: Without dead ends: 3555 [2023-12-15 18:02:44,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:44,802 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1518 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:44,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1775 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2023-12-15 18:02:44,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3553. [2023-12-15 18:02:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3553 states, 3551 states have (on average 1.5237961137707687) internal successors, (5411), 3552 states have internal predecessors, (5411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 5411 transitions. [2023-12-15 18:02:44,866 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 5411 transitions. Word has length 91 [2023-12-15 18:02:44,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:44,867 INFO L495 AbstractCegarLoop]: Abstraction has 3553 states and 5411 transitions. [2023-12-15 18:02:44,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 5411 transitions. [2023-12-15 18:02:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 18:02:44,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:44,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:44,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:02:44,868 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:44,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:44,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1488229324, now seen corresponding path program 1 times [2023-12-15 18:02:44,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:44,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761579433] [2023-12-15 18:02:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:44,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:44,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:44,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761579433] [2023-12-15 18:02:44,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761579433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:44,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:44,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:02:44,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601115969] [2023-12-15 18:02:44,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:44,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:02:44,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:02:44,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:44,921 INFO L87 Difference]: Start difference. First operand 3553 states and 5411 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:44,978 INFO L93 Difference]: Finished difference Result 5917 states and 9101 transitions. [2023-12-15 18:02:44,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:02:44,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-15 18:02:44,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:44,987 INFO L225 Difference]: With dead ends: 5917 [2023-12-15 18:02:44,987 INFO L226 Difference]: Without dead ends: 4687 [2023-12-15 18:02:44,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:44,990 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1516 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:44,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1777 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2023-12-15 18:02:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4685. [2023-12-15 18:02:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4683 states have (on average 1.5261584454409567) internal successors, (7147), 4684 states have internal predecessors, (7147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 7147 transitions. [2023-12-15 18:02:45,082 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 7147 transitions. Word has length 91 [2023-12-15 18:02:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:45,082 INFO L495 AbstractCegarLoop]: Abstraction has 4685 states and 7147 transitions. [2023-12-15 18:02:45,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 7147 transitions. [2023-12-15 18:02:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 18:02:45,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:45,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:45,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:02:45,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:45,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1528173260, now seen corresponding path program 1 times [2023-12-15 18:02:45,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:45,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701710437] [2023-12-15 18:02:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:45,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:45,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:45,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701710437] [2023-12-15 18:02:45,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701710437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:45,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:45,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:02:45,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21921859] [2023-12-15 18:02:45,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:45,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:02:45,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:45,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:02:45,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:45,140 INFO L87 Difference]: Start difference. First operand 4685 states and 7147 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:45,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:45,227 INFO L93 Difference]: Finished difference Result 9217 states and 14141 transitions. [2023-12-15 18:02:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:02:45,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-15 18:02:45,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:45,240 INFO L225 Difference]: With dead ends: 9217 [2023-12-15 18:02:45,240 INFO L226 Difference]: Without dead ends: 6855 [2023-12-15 18:02:45,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:45,245 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:45,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:45,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2023-12-15 18:02:45,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6853. [2023-12-15 18:02:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6853 states, 6851 states have (on average 1.521967595971391) internal successors, (10427), 6852 states have internal predecessors, (10427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:45,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6853 states to 6853 states and 10427 transitions. [2023-12-15 18:02:45,386 INFO L78 Accepts]: Start accepts. Automaton has 6853 states and 10427 transitions. Word has length 91 [2023-12-15 18:02:45,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:45,387 INFO L495 AbstractCegarLoop]: Abstraction has 6853 states and 10427 transitions. [2023-12-15 18:02:45,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6853 states and 10427 transitions. [2023-12-15 18:02:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 18:02:45,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:45,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:45,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:02:45,388 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:45,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash 902517196, now seen corresponding path program 1 times [2023-12-15 18:02:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:45,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344267692] [2023-12-15 18:02:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:45,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:45,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:45,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344267692] [2023-12-15 18:02:45,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344267692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:45,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:45,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:02:45,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105205580] [2023-12-15 18:02:45,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:45,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:02:45,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:45,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:02:45,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:45,482 INFO L87 Difference]: Start difference. First operand 6853 states and 10427 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:45,625 INFO L93 Difference]: Finished difference Result 15529 states and 23645 transitions. [2023-12-15 18:02:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:02:45,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-15 18:02:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:45,643 INFO L225 Difference]: With dead ends: 15529 [2023-12-15 18:02:45,643 INFO L226 Difference]: Without dead ends: 10999 [2023-12-15 18:02:45,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:45,653 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1512 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:45,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10999 states. [2023-12-15 18:02:45,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10999 to 10997. [2023-12-15 18:02:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10997 states, 10995 states have (on average 1.510050022737608) internal successors, (16603), 10996 states have internal predecessors, (16603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10997 states to 10997 states and 16603 transitions. [2023-12-15 18:02:45,898 INFO L78 Accepts]: Start accepts. Automaton has 10997 states and 16603 transitions. Word has length 91 [2023-12-15 18:02:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:45,898 INFO L495 AbstractCegarLoop]: Abstraction has 10997 states and 16603 transitions. [2023-12-15 18:02:45,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 10997 states and 16603 transitions. [2023-12-15 18:02:45,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 18:02:45,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:45,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:45,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:02:45,899 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:45,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:45,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1791250636, now seen corresponding path program 1 times [2023-12-15 18:02:45,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:45,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741095401] [2023-12-15 18:02:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:45,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:45,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:45,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741095401] [2023-12-15 18:02:45,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741095401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:45,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:45,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:02:45,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544435513] [2023-12-15 18:02:45,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:45,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:02:45,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:45,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:02:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:45,962 INFO L87 Difference]: Start difference. First operand 10997 states and 16603 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:46,239 INFO L93 Difference]: Finished difference Result 27577 states and 41501 transitions. [2023-12-15 18:02:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:02:46,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-15 18:02:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:46,271 INFO L225 Difference]: With dead ends: 27577 [2023-12-15 18:02:46,272 INFO L226 Difference]: Without dead ends: 18903 [2023-12-15 18:02:46,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:46,286 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1510 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:46,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1783 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2023-12-15 18:02:46,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 18901. [2023-12-15 18:02:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18901 states, 18899 states have (on average 1.4914545743161014) internal successors, (28187), 18900 states have internal predecessors, (28187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18901 states to 18901 states and 28187 transitions. [2023-12-15 18:02:47,037 INFO L78 Accepts]: Start accepts. Automaton has 18901 states and 28187 transitions. Word has length 91 [2023-12-15 18:02:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:47,037 INFO L495 AbstractCegarLoop]: Abstraction has 18901 states and 28187 transitions. [2023-12-15 18:02:47,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:47,037 INFO L276 IsEmpty]: Start isEmpty. Operand 18901 states and 28187 transitions. [2023-12-15 18:02:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 18:02:47,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:47,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:02:47,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:02:47,038 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:47,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2127768116, now seen corresponding path program 1 times [2023-12-15 18:02:47,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:47,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912407131] [2023-12-15 18:02:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:02:47,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:47,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912407131] [2023-12-15 18:02:47,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912407131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:47,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:47,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:02:47,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947797690] [2023-12-15 18:02:47,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:47,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:02:47,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:47,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:02:47,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:47,096 INFO L87 Difference]: Start difference. First operand 18901 states and 28187 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:47,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:47,611 INFO L93 Difference]: Finished difference Result 50521 states and 74909 transitions. [2023-12-15 18:02:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:02:47,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-15 18:02:47,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:47,666 INFO L225 Difference]: With dead ends: 50521 [2023-12-15 18:02:47,667 INFO L226 Difference]: Without dead ends: 33943 [2023-12-15 18:02:47,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:02:47,694 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1520 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:47,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:02:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33943 states. [2023-12-15 18:02:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33943 to 33941. [2023-12-15 18:02:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33941 states, 33939 states have (on average 1.46789828810513) internal successors, (49819), 33940 states have internal predecessors, (49819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33941 states to 33941 states and 49819 transitions. [2023-12-15 18:02:48,705 INFO L78 Accepts]: Start accepts. Automaton has 33941 states and 49819 transitions. Word has length 91 [2023-12-15 18:02:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:48,705 INFO L495 AbstractCegarLoop]: Abstraction has 33941 states and 49819 transitions. [2023-12-15 18:02:48,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 33941 states and 49819 transitions. [2023-12-15 18:02:48,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 18:02:48,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:48,711 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:02:48,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:02:48,712 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:48,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:48,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1625082506, now seen corresponding path program 1 times [2023-12-15 18:02:48,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:48,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796834975] [2023-12-15 18:02:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:48,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:02:48,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:48,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796834975] [2023-12-15 18:02:48,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796834975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:48,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:48,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 18:02:48,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565365831] [2023-12-15 18:02:48,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:48,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:02:48,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:02:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:02:48,941 INFO L87 Difference]: Start difference. First operand 33941 states and 49819 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:02:53,769 INFO L93 Difference]: Finished difference Result 283559 states and 415524 transitions. [2023-12-15 18:02:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:02:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-15 18:02:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:02:54,684 INFO L225 Difference]: With dead ends: 283559 [2023-12-15 18:02:54,685 INFO L226 Difference]: Without dead ends: 261541 [2023-12-15 18:02:54,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:02:54,782 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 11678 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11678 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:02:54,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11678 Valid, 5224 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:02:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261541 states. [2023-12-15 18:02:57,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261541 to 60821. [2023-12-15 18:02:58,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60821 states, 60819 states have (on average 1.461040135483977) internal successors, (88859), 60820 states have internal predecessors, (88859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60821 states to 60821 states and 88859 transitions. [2023-12-15 18:02:58,125 INFO L78 Accepts]: Start accepts. Automaton has 60821 states and 88859 transitions. Word has length 115 [2023-12-15 18:02:58,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:02:58,126 INFO L495 AbstractCegarLoop]: Abstraction has 60821 states and 88859 transitions. [2023-12-15 18:02:58,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:02:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 60821 states and 88859 transitions. [2023-12-15 18:02:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 18:02:58,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:02:58,136 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:02:58,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:02:58,137 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:02:58,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:02:58,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1550470026, now seen corresponding path program 1 times [2023-12-15 18:02:58,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:02:58,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769489492] [2023-12-15 18:02:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:02:58,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:02:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:02:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:02:58,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:02:58,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769489492] [2023-12-15 18:02:58,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769489492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:02:58,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:02:58,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 18:02:58,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613375846] [2023-12-15 18:02:58,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:02:58,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:02:58,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:02:58,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:02:58,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:02:58,496 INFO L87 Difference]: Start difference. First operand 60821 states and 88859 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:03:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:03:04,636 INFO L93 Difference]: Finished difference Result 315175 states and 461604 transitions. [2023-12-15 18:03:04,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:03:04,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 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 115 [2023-12-15 18:03:04,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:03:05,208 INFO L225 Difference]: With dead ends: 315175 [2023-12-15 18:03:05,209 INFO L226 Difference]: Without dead ends: 283557 [2023-12-15 18:03:05,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:03:05,290 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 11680 mSDsluCounter, 3489 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11680 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:03:05,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11680 Valid, 5181 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:03:05,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283557 states. [2023-12-15 18:03:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283557 to 103445. [2023-12-15 18:03:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103445 states, 103443 states have (on average 1.4566766238411493) internal successors, (150683), 103444 states have internal predecessors, (150683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:03:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103445 states to 103445 states and 150683 transitions. [2023-12-15 18:03:10,280 INFO L78 Accepts]: Start accepts. Automaton has 103445 states and 150683 transitions. Word has length 115 [2023-12-15 18:03:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:03:10,280 INFO L495 AbstractCegarLoop]: Abstraction has 103445 states and 150683 transitions. [2023-12-15 18:03:10,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:03:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 103445 states and 150683 transitions. [2023-12-15 18:03:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 18:03:10,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:03:10,289 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:03:10,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:03:10,289 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:03:10,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:03:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1205472650, now seen corresponding path program 1 times [2023-12-15 18:03:10,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:03:10,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699006285] [2023-12-15 18:03:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:03:10,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:03:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:03:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 18:03:10,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:03:10,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699006285] [2023-12-15 18:03:10,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699006285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:03:10,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:03:10,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 18:03:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071288225] [2023-12-15 18:03:10,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:03:10,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:03:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:03:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:03:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:03:10,465 INFO L87 Difference]: Start difference. First operand 103445 states and 150683 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:03:18,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:03:18,169 INFO L93 Difference]: Finished difference Result 346791 states and 507556 transitions. [2023-12-15 18:03:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:03:18,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 115 [2023-12-15 18:03:18,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:03:18,943 INFO L225 Difference]: With dead ends: 346791 [2023-12-15 18:03:18,943 INFO L226 Difference]: Without dead ends: 315173 [2023-12-15 18:03:19,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:03:19,001 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 11722 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11722 SdHoareTripleChecker+Valid, 5175 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:03:19,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11722 Valid, 5175 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:03:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315173 states. [2023-12-15 18:03:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315173 to 135061. [2023-12-15 18:03:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135061 states, 135059 states have (on average 1.4559192649138524) internal successors, (196635), 135060 states have internal predecessors, (196635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:03:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135061 states to 135061 states and 196635 transitions. [2023-12-15 18:03:25,047 INFO L78 Accepts]: Start accepts. Automaton has 135061 states and 196635 transitions. Word has length 115 [2023-12-15 18:03:25,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:03:25,047 INFO L495 AbstractCegarLoop]: Abstraction has 135061 states and 196635 transitions. [2023-12-15 18:03:25,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:03:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 135061 states and 196635 transitions. [2023-12-15 18:03:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 18:03:25,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:03:25,080 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:03:25,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:03:25,081 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:03:25,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:03:25,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1474055818, now seen corresponding path program 1 times [2023-12-15 18:03:25,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:03:25,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360172493] [2023-12-15 18:03:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:03:25,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:03:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:03:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 18:03:25,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:03:25,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360172493] [2023-12-15 18:03:25,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360172493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:03:25,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:03:25,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 18:03:25,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545810782] [2023-12-15 18:03:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:03:25,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:03:25,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:03:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:03:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:03:25,285 INFO L87 Difference]: Start difference. First operand 135061 states and 196635 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 18:03:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:03:27,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:03:27,111 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2390 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:03:27,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 2197 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:03:27,112 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:03:27,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:03:27,113 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (135061states) and FLOYD_HOARE automaton (currently 10 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (35501 states constructed, input type IntersectNwa). [2023-12-15 18:03:27,114 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:03:27,117 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:03:27,119 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:03:27,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:03:27 BoogieIcfgContainer [2023-12-15 18:03:27,121 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:03:27,121 INFO L158 Benchmark]: Toolchain (without parser) took 57153.89ms. Allocated memory was 255.9MB in the beginning and 6.1GB in the end (delta: 5.8GB). Free memory was 187.0MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-15 18:03:27,122 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory was 141.4MB in the beginning and 141.3MB in the end (delta: 70.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:03:27,123 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1600.00ms. Allocated memory is still 255.9MB. Free memory was 187.0MB in the beginning and 177.5MB in the end (delta: 9.5MB). Peak memory consumption was 107.4MB. Max. memory is 8.0GB. [2023-12-15 18:03:27,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 374.78ms. Allocated memory was 255.9MB in the beginning and 471.9MB in the end (delta: 216.0MB). Free memory was 177.5MB in the beginning and 366.8MB in the end (delta: -189.3MB). Peak memory consumption was 113.2MB. Max. memory is 8.0GB. [2023-12-15 18:03:27,124 INFO L158 Benchmark]: Boogie Preprocessor took 560.58ms. Allocated memory is still 471.9MB. Free memory was 366.8MB in the beginning and 302.8MB in the end (delta: 64.0MB). Peak memory consumption was 76.0MB. Max. memory is 8.0GB. [2023-12-15 18:03:27,124 INFO L158 Benchmark]: RCFGBuilder took 4068.19ms. Allocated memory was 471.9MB in the beginning and 899.7MB in the end (delta: 427.8MB). Free memory was 302.8MB in the beginning and 642.6MB in the end (delta: -339.7MB). Peak memory consumption was 164.1MB. Max. memory is 8.0GB. [2023-12-15 18:03:27,125 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:03:27,129 INFO L158 Benchmark]: TraceAbstraction took 50543.83ms. Allocated memory was 899.7MB in the beginning and 6.1GB in the end (delta: 5.2GB). Free memory was 642.0MB in the beginning and 4.2GB in the end (delta: -3.6GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-15 18:03:27,130 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory was 141.4MB in the beginning and 141.3MB in the end (delta: 70.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1600.00ms. Allocated memory is still 255.9MB. Free memory was 187.0MB in the beginning and 177.5MB in the end (delta: 9.5MB). Peak memory consumption was 107.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 374.78ms. Allocated memory was 255.9MB in the beginning and 471.9MB in the end (delta: 216.0MB). Free memory was 177.5MB in the beginning and 366.8MB in the end (delta: -189.3MB). Peak memory consumption was 113.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 560.58ms. Allocated memory is still 471.9MB. Free memory was 366.8MB in the beginning and 302.8MB in the end (delta: 64.0MB). Peak memory consumption was 76.0MB. Max. memory is 8.0GB. * RCFGBuilder took 4068.19ms. Allocated memory was 471.9MB in the beginning and 899.7MB in the end (delta: 427.8MB). Free memory was 302.8MB in the beginning and 642.6MB in the end (delta: -339.7MB). Peak memory consumption was 164.1MB. Max. memory is 8.0GB. * TraceAbstraction took 50543.83ms. Allocated memory was 899.7MB in the beginning and 6.1GB in the end (delta: 5.2GB). Free memory was 642.0MB in the beginning and 4.2GB in the end (delta: -3.6GB). Peak memory consumption was 1.9GB. 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: 681]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 681). Cancelled while NwaCegarLoop was constructing difference of abstraction (135061states) and FLOYD_HOARE automaton (currently 10 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (35501 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 897]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 897). Cancelled while NwaCegarLoop was constructing difference of abstraction (135061states) and FLOYD_HOARE automaton (currently 10 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (35501 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 882 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 50.5s, OverallIterations: 19, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77572 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77572 mSDsluCounter, 54415 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25105 mSDsCounter, 1377 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6952 IncrementalHoareTripleChecker+Invalid, 8329 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1377 mSolverCounterUnsat, 29310 mSDtfsCounter, 6952 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135061occurred in iteration=18, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 561794 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1663 NumberOfCodeBlocks, 1663 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1644 ConstructedInterpolants, 0 QuantifiedInterpolants, 11147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 80/80 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