/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:46:34,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:46:34,501 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 18:46:34,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:46:34,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:46:34,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:46:34,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:46:34,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:46:34,533 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:46:34,533 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:46:34,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:46:34,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:46:34,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:46:34,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:46:34,534 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:46:34,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:46:34,535 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:46:34,535 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:46:34,535 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:46:34,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:46:34,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:46:34,539 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:46:34,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:46:34,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:46:34,542 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:46:34,543 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:46:34,543 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:46:34,543 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:46:34,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:46:34,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:46:34,545 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:46:34,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:46:34,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:46:34,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:46:34,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:46:34,545 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:46:34,546 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:46:34,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:46:34,546 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:46:34,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:46:34,546 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:46:34,546 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:46:34,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:46:34,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:46:34,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:46:34,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:46:34,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:46:34,750 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:46:34,750 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:46:34,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19.c [2023-12-15 18:46:35,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:46:35,993 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:46:35,994 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label19.c [2023-12-15 18:46:36,006 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c368978/c89f648cb9cf498889173fc9e6e0ea6c/FLAGcdf733917 [2023-12-15 18:46:36,015 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c368978/c89f648cb9cf498889173fc9e6e0ea6c [2023-12-15 18:46:36,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:46:36,018 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:46:36,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:46:36,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:46:36,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:46:36,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2e9b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36, skipping insertion in model container [2023-12-15 18:46:36,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,071 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:46:36,219 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label19.c[8142,8155] [2023-12-15 18:46:36,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:46:36,418 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:46:36,446 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label19.c[8142,8155] [2023-12-15 18:46:36,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:46:36,515 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:46:36,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36 WrapperNode [2023-12-15 18:46:36,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:46:36,517 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:46:36,517 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:46:36,517 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:46:36,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,653 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2023-12-15 18:46:36,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:46:36,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:46:36,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:46:36,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:46:36,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,675 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,747 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 18:46:36,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:46:36,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:46:36,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:46:36,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:46:36,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (1/1) ... [2023-12-15 18:46:36,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:46:36,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:46:36,847 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 18:46:36,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:46:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:46:36,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:46:36,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:46:36,869 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 18:46:36,913 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:46:36,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:46:37,988 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:46:38,024 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:46:38,024 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:46:38,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:46:38 BoogieIcfgContainer [2023-12-15 18:46:38,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:46:38,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:46:38,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:46:38,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:46:38,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:46:36" (1/3) ... [2023-12-15 18:46:38,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1387328d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:46:38, skipping insertion in model container [2023-12-15 18:46:38,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:46:36" (2/3) ... [2023-12-15 18:46:38,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1387328d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:46:38, skipping insertion in model container [2023-12-15 18:46:38,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:46:38" (3/3) ... [2023-12-15 18:46:38,031 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label19.c [2023-12-15 18:46:38,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:46:38,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:46:38,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:46:38,092 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;@594d5128, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:46:38,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:46:38,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 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 18:46:38,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 18:46:38,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:38,103 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] [2023-12-15 18:46:38,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:38,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:38,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1041092486, now seen corresponding path program 1 times [2023-12-15 18:46:38,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:38,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916780109] [2023-12-15 18:46:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:38,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:38,260 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 18:46:38,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:38,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916780109] [2023-12-15 18:46:38,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916780109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:38,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:38,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:46:38,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316755057] [2023-12-15 18:46:38,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:38,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:46:38,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:38,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:46:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:46:38,292 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 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 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 18:46:38,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:38,338 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2023-12-15 18:46:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:46:38,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-15 18:46:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:38,352 INFO L225 Difference]: With dead ends: 441 [2023-12-15 18:46:38,352 INFO L226 Difference]: Without dead ends: 219 [2023-12-15 18:46:38,356 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 18:46:38,358 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:38,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:46:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-15 18:46:38,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-12-15 18:46:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 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 18:46:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2023-12-15 18:46:38,404 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 55 [2023-12-15 18:46:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:38,405 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2023-12-15 18:46:38,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 18:46:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2023-12-15 18:46:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 18:46:38,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:38,407 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] [2023-12-15 18:46:38,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:46:38,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:38,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash -68007116, now seen corresponding path program 1 times [2023-12-15 18:46:38,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443397473] [2023-12-15 18:46:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:38,557 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 18:46:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443397473] [2023-12-15 18:46:38,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443397473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:38,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:38,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:46:38,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989340436] [2023-12-15 18:46:38,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:38,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:38,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:38,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:38,564 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 18:46:39,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:39,317 INFO L93 Difference]: Finished difference Result 630 states and 1026 transitions. [2023-12-15 18:46:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:39,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-15 18:46:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:39,320 INFO L225 Difference]: With dead ends: 630 [2023-12-15 18:46:39,320 INFO L226 Difference]: Without dead ends: 412 [2023-12-15 18:46:39,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:39,321 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 168 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:39,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 155 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:46:39,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-12-15 18:46:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2023-12-15 18:46:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.4549878345498783) internal successors, (598), 411 states have internal predecessors, (598), 0 states have call successors, (0), 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 18:46:39,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 598 transitions. [2023-12-15 18:46:39,334 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 598 transitions. Word has length 55 [2023-12-15 18:46:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:39,334 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 598 transitions. [2023-12-15 18:46:39,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 18:46:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 598 transitions. [2023-12-15 18:46:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-15 18:46:39,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:39,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:46:39,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:46:39,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:39,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:39,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1462231532, now seen corresponding path program 1 times [2023-12-15 18:46:39,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:39,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756452940] [2023-12-15 18:46:39,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:39,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:46:39,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:39,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756452940] [2023-12-15 18:46:39,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756452940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:39,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:39,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:46:39,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150977683] [2023-12-15 18:46:39,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:39,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:39,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:39,542 INFO L87 Difference]: Start difference. First operand 412 states and 598 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 18:46:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:40,173 INFO L93 Difference]: Finished difference Result 1210 states and 1762 transitions. [2023-12-15 18:46:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:40,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-15 18:46:40,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:40,178 INFO L225 Difference]: With dead ends: 1210 [2023-12-15 18:46:40,178 INFO L226 Difference]: Without dead ends: 799 [2023-12-15 18:46:40,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:40,180 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 144 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:40,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 116 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:46:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-15 18:46:40,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 788. [2023-12-15 18:46:40,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.3761118170266835) internal successors, (1083), 787 states have internal predecessors, (1083), 0 states have call successors, (0), 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 18:46:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1083 transitions. [2023-12-15 18:46:40,206 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1083 transitions. Word has length 123 [2023-12-15 18:46:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:40,206 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1083 transitions. [2023-12-15 18:46:40,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 18:46:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1083 transitions. [2023-12-15 18:46:40,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 18:46:40,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:40,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:46:40,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:46:40,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:40,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:40,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2061888554, now seen corresponding path program 1 times [2023-12-15 18:46:40,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:40,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607098921] [2023-12-15 18:46:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:40,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:46:40,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:40,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607098921] [2023-12-15 18:46:40,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607098921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:40,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:40,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:46:40,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700911885] [2023-12-15 18:46:40,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:40,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:40,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:40,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:40,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:40,453 INFO L87 Difference]: Start difference. First operand 788 states and 1083 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:46:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:41,011 INFO L93 Difference]: Finished difference Result 1944 states and 2613 transitions. [2023-12-15 18:46:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:41,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-12-15 18:46:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:41,014 INFO L225 Difference]: With dead ends: 1944 [2023-12-15 18:46:41,014 INFO L226 Difference]: Without dead ends: 1157 [2023-12-15 18:46:41,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:41,017 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:41,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 188 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:46:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-12-15 18:46:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2023-12-15 18:46:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.2718614718614718) internal successors, (1469), 1155 states have internal predecessors, (1469), 0 states have call successors, (0), 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 18:46:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1469 transitions. [2023-12-15 18:46:41,032 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1469 transitions. Word has length 124 [2023-12-15 18:46:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:41,032 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1469 transitions. [2023-12-15 18:46:41,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:46:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1469 transitions. [2023-12-15 18:46:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-15 18:46:41,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:41,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:46:41,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:41,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash -479133243, now seen corresponding path program 1 times [2023-12-15 18:46:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:41,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516958213] [2023-12-15 18:46:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:46:41,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:41,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516958213] [2023-12-15 18:46:41,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516958213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:41,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:41,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:41,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618375150] [2023-12-15 18:46:41,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:41,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:41,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:41,220 INFO L87 Difference]: Start difference. First operand 1156 states and 1469 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 18:46:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:41,760 INFO L93 Difference]: Finished difference Result 2518 states and 3351 transitions. [2023-12-15 18:46:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:41,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-15 18:46:41,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:41,765 INFO L225 Difference]: With dead ends: 2518 [2023-12-15 18:46:41,765 INFO L226 Difference]: Without dead ends: 1547 [2023-12-15 18:46:41,767 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 18:46:41,767 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 179 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:41,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 319 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:46:41,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2023-12-15 18:46:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1544. [2023-12-15 18:46:41,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 1.2942320155541154) internal successors, (1997), 1543 states have internal predecessors, (1997), 0 states have call successors, (0), 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 18:46:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1997 transitions. [2023-12-15 18:46:41,787 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1997 transitions. Word has length 182 [2023-12-15 18:46:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:41,787 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 1997 transitions. [2023-12-15 18:46:41,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 18:46:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1997 transitions. [2023-12-15 18:46:41,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-15 18:46:41,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:41,790 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:46:41,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:46:41,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:41,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash 424628840, now seen corresponding path program 1 times [2023-12-15 18:46:41,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:41,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798858230] [2023-12-15 18:46:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:41,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:46:41,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:41,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798858230] [2023-12-15 18:46:41,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798858230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:41,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:41,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:41,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993027777] [2023-12-15 18:46:41,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:41,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:41,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:41,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:41,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:41,970 INFO L87 Difference]: Start difference. First operand 1544 states and 1997 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 18:46:42,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:42,538 INFO L93 Difference]: Finished difference Result 3655 states and 4825 transitions. [2023-12-15 18:46:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:42,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2023-12-15 18:46:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:42,545 INFO L225 Difference]: With dead ends: 3655 [2023-12-15 18:46:42,545 INFO L226 Difference]: Without dead ends: 2296 [2023-12-15 18:46:42,547 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 18:46:42,547 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 136 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:42,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 337 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:46:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2023-12-15 18:46:42,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2099. [2023-12-15 18:46:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 1.2707340324118208) internal successors, (2666), 2098 states have internal predecessors, (2666), 0 states have call successors, (0), 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 18:46:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2666 transitions. [2023-12-15 18:46:42,586 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2666 transitions. Word has length 235 [2023-12-15 18:46:42,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:42,587 INFO L495 AbstractCegarLoop]: Abstraction has 2099 states and 2666 transitions. [2023-12-15 18:46:42,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 18:46:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2666 transitions. [2023-12-15 18:46:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-15 18:46:42,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:42,589 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:46:42,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:46:42,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:42,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:42,590 INFO L85 PathProgramCache]: Analyzing trace with hash -39023826, now seen corresponding path program 1 times [2023-12-15 18:46:42,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:42,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758214143] [2023-12-15 18:46:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:42,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:46:42,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:42,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758214143] [2023-12-15 18:46:42,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758214143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:42,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:42,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:46:42,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003942762] [2023-12-15 18:46:42,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:42,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:46:42,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:42,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:46:42,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:46:42,960 INFO L87 Difference]: Start difference. First operand 2099 states and 2666 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 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 18:46:44,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:44,078 INFO L93 Difference]: Finished difference Result 6987 states and 9013 transitions. [2023-12-15 18:46:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:46:44,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-15 18:46:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:44,091 INFO L225 Difference]: With dead ends: 6987 [2023-12-15 18:46:44,091 INFO L226 Difference]: Without dead ends: 4889 [2023-12-15 18:46:44,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:46:44,094 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 321 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:44,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 69 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:46:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2023-12-15 18:46:44,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 4689. [2023-12-15 18:46:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4688 states have (on average 1.251919795221843) internal successors, (5869), 4688 states have internal predecessors, (5869), 0 states have call successors, (0), 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 18:46:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 5869 transitions. [2023-12-15 18:46:44,161 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 5869 transitions. Word has length 236 [2023-12-15 18:46:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:44,162 INFO L495 AbstractCegarLoop]: Abstraction has 4689 states and 5869 transitions. [2023-12-15 18:46:44,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 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 18:46:44,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 5869 transitions. [2023-12-15 18:46:44,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-15 18:46:44,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:44,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:46:44,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:46:44,165 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:44,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:44,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1425667709, now seen corresponding path program 1 times [2023-12-15 18:46:44,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:44,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078394651] [2023-12-15 18:46:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:44,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-15 18:46:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078394651] [2023-12-15 18:46:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078394651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:44,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:44,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:44,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774831900] [2023-12-15 18:46:44,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:44,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:44,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:44,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:44,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:44,317 INFO L87 Difference]: Start difference. First operand 4689 states and 5869 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 18:46:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:44,909 INFO L93 Difference]: Finished difference Result 10495 states and 13348 transitions. [2023-12-15 18:46:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:44,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 237 [2023-12-15 18:46:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:44,924 INFO L225 Difference]: With dead ends: 10495 [2023-12-15 18:46:44,924 INFO L226 Difference]: Without dead ends: 6175 [2023-12-15 18:46:44,930 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 18:46:44,930 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 141 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:44,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 368 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:46:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2023-12-15 18:46:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 5977. [2023-12-15 18:46:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5977 states, 5976 states have (on average 1.22975234270415) internal successors, (7349), 5976 states have internal predecessors, (7349), 0 states have call successors, (0), 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 18:46:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5977 states to 5977 states and 7349 transitions. [2023-12-15 18:46:45,050 INFO L78 Accepts]: Start accepts. Automaton has 5977 states and 7349 transitions. Word has length 237 [2023-12-15 18:46:45,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:45,050 INFO L495 AbstractCegarLoop]: Abstraction has 5977 states and 7349 transitions. [2023-12-15 18:46:45,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 18:46:45,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5977 states and 7349 transitions. [2023-12-15 18:46:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-15 18:46:45,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:45,053 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:46:45,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:46:45,054 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:45,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1419962307, now seen corresponding path program 1 times [2023-12-15 18:46:45,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:45,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476388126] [2023-12-15 18:46:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:45,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-15 18:46:45,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:45,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476388126] [2023-12-15 18:46:45,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476388126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:45,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:45,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:45,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770339204] [2023-12-15 18:46:45,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:45,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:45,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:45,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:45,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:45,224 INFO L87 Difference]: Start difference. First operand 5977 states and 7349 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 18:46:45,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:45,916 INFO L93 Difference]: Finished difference Result 14180 states and 17518 transitions. [2023-12-15 18:46:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:45,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 247 [2023-12-15 18:46:45,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:45,937 INFO L225 Difference]: With dead ends: 14180 [2023-12-15 18:46:45,937 INFO L226 Difference]: Without dead ends: 8572 [2023-12-15 18:46:45,944 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 18:46:45,945 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 163 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:45,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 327 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:46:45,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8572 states. [2023-12-15 18:46:46,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8572 to 8016. [2023-12-15 18:46:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8016 states, 8015 states have (on average 1.216968184653774) internal successors, (9754), 8015 states have internal predecessors, (9754), 0 states have call successors, (0), 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 18:46:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 9754 transitions. [2023-12-15 18:46:46,086 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 9754 transitions. Word has length 247 [2023-12-15 18:46:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:46,086 INFO L495 AbstractCegarLoop]: Abstraction has 8016 states and 9754 transitions. [2023-12-15 18:46:46,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 18:46:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 9754 transitions. [2023-12-15 18:46:46,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-15 18:46:46,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:46,090 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:46:46,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:46:46,090 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:46,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:46,090 INFO L85 PathProgramCache]: Analyzing trace with hash -353037167, now seen corresponding path program 1 times [2023-12-15 18:46:46,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:46,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414140178] [2023-12-15 18:46:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:46,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-12-15 18:46:46,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:46,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414140178] [2023-12-15 18:46:46,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414140178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:46,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:46,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:46,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208115538] [2023-12-15 18:46:46,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:46,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:46,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:46,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:46,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:46,236 INFO L87 Difference]: Start difference. First operand 8016 states and 9754 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 18:46:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:46,852 INFO L93 Difference]: Finished difference Result 17344 states and 21232 transitions. [2023-12-15 18:46:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:46,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2023-12-15 18:46:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:46,880 INFO L225 Difference]: With dead ends: 17344 [2023-12-15 18:46:46,880 INFO L226 Difference]: Without dead ends: 9697 [2023-12-15 18:46:46,888 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 18:46:46,889 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 145 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:46,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 197 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:46:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9697 states. [2023-12-15 18:46:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9697 to 9303. [2023-12-15 18:46:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9303 states, 9302 states have (on average 1.2159750591270695) internal successors, (11311), 9302 states have internal predecessors, (11311), 0 states have call successors, (0), 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 18:46:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 11311 transitions. [2023-12-15 18:46:47,038 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 11311 transitions. Word has length 257 [2023-12-15 18:46:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:47,039 INFO L495 AbstractCegarLoop]: Abstraction has 9303 states and 11311 transitions. [2023-12-15 18:46:47,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 18:46:47,039 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 11311 transitions. [2023-12-15 18:46:47,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-15 18:46:47,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:47,044 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:46:47,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:46:47,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:47,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:47,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1776038293, now seen corresponding path program 1 times [2023-12-15 18:46:47,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:47,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285738511] [2023-12-15 18:46:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:47,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:46:47,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:47,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285738511] [2023-12-15 18:46:47,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285738511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:47,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:47,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:46:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869715413] [2023-12-15 18:46:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:47,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:47,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:47,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:47,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:47,140 INFO L87 Difference]: Start difference. First operand 9303 states and 11311 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 18:46:47,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:47,711 INFO L93 Difference]: Finished difference Result 18204 states and 22187 transitions. [2023-12-15 18:46:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:47,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 258 [2023-12-15 18:46:47,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:47,725 INFO L225 Difference]: With dead ends: 18204 [2023-12-15 18:46:47,725 INFO L226 Difference]: Without dead ends: 9270 [2023-12-15 18:46:47,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:47,734 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 114 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:47,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 148 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:46:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9270 states. [2023-12-15 18:46:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9270 to 9085. [2023-12-15 18:46:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9085 states, 9084 states have (on average 1.1512549537648613) internal successors, (10458), 9084 states have internal predecessors, (10458), 0 states have call successors, (0), 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 18:46:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9085 states to 9085 states and 10458 transitions. [2023-12-15 18:46:47,868 INFO L78 Accepts]: Start accepts. Automaton has 9085 states and 10458 transitions. Word has length 258 [2023-12-15 18:46:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:47,868 INFO L495 AbstractCegarLoop]: Abstraction has 9085 states and 10458 transitions. [2023-12-15 18:46:47,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 18:46:47,868 INFO L276 IsEmpty]: Start isEmpty. Operand 9085 states and 10458 transitions. [2023-12-15 18:46:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-15 18:46:47,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:47,873 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:46:47,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:46:47,874 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:47,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:47,874 INFO L85 PathProgramCache]: Analyzing trace with hash 651111351, now seen corresponding path program 1 times [2023-12-15 18:46:47,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:47,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438990402] [2023-12-15 18:46:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:47,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-15 18:46:48,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438990402] [2023-12-15 18:46:48,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438990402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:48,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:48,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537823990] [2023-12-15 18:46:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:48,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:48,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:48,055 INFO L87 Difference]: Start difference. First operand 9085 states and 10458 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 18:46:48,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:48,700 INFO L93 Difference]: Finished difference Result 18357 states and 21125 transitions. [2023-12-15 18:46:48,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:48,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 288 [2023-12-15 18:46:48,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:48,718 INFO L225 Difference]: With dead ends: 18357 [2023-12-15 18:46:48,719 INFO L226 Difference]: Without dead ends: 9457 [2023-12-15 18:46:48,725 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 18:46:48,726 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 145 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:48,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 371 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:46:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9457 states. [2023-12-15 18:46:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9457 to 9452. [2023-12-15 18:46:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9452 states, 9451 states have (on average 1.1241138503862025) internal successors, (10624), 9451 states have internal predecessors, (10624), 0 states have call successors, (0), 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 18:46:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9452 states to 9452 states and 10624 transitions. [2023-12-15 18:46:48,829 INFO L78 Accepts]: Start accepts. Automaton has 9452 states and 10624 transitions. Word has length 288 [2023-12-15 18:46:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:48,829 INFO L495 AbstractCegarLoop]: Abstraction has 9452 states and 10624 transitions. [2023-12-15 18:46:48,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 18:46:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 9452 states and 10624 transitions. [2023-12-15 18:46:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-12-15 18:46:48,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:48,836 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:48,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:46:48,836 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:48,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -14193191, now seen corresponding path program 1 times [2023-12-15 18:46:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:48,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045065828] [2023-12-15 18:46:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:48,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:46:49,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045065828] [2023-12-15 18:46:49,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045065828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:49,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:49,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845324942] [2023-12-15 18:46:49,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:49,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:49,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:49,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:49,049 INFO L87 Difference]: Start difference. First operand 9452 states and 10624 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 18:46:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:49,685 INFO L93 Difference]: Finished difference Result 21306 states and 24060 transitions. [2023-12-15 18:46:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:49,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 318 [2023-12-15 18:46:49,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:49,703 INFO L225 Difference]: With dead ends: 21306 [2023-12-15 18:46:49,703 INFO L226 Difference]: Without dead ends: 12223 [2023-12-15 18:46:49,710 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 18:46:49,711 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 140 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:49,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 122 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:46:49,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12223 states. [2023-12-15 18:46:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12223 to 12221. [2023-12-15 18:46:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12221 states, 12220 states have (on average 1.1161211129296236) internal successors, (13639), 12220 states have internal predecessors, (13639), 0 states have call successors, (0), 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 18:46:49,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12221 states to 12221 states and 13639 transitions. [2023-12-15 18:46:49,842 INFO L78 Accepts]: Start accepts. Automaton has 12221 states and 13639 transitions. Word has length 318 [2023-12-15 18:46:49,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:49,842 INFO L495 AbstractCegarLoop]: Abstraction has 12221 states and 13639 transitions. [2023-12-15 18:46:49,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 18:46:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 12221 states and 13639 transitions. [2023-12-15 18:46:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-15 18:46:49,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:49,851 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:49,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:46:49,851 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:49,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1374191474, now seen corresponding path program 1 times [2023-12-15 18:46:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671093245] [2023-12-15 18:46:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 242 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:46:50,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:50,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671093245] [2023-12-15 18:46:50,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671093245] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:46:50,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940942938] [2023-12-15 18:46:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:50,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:46:50,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:46:50,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:46:50,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:46:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:50,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:46:50,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:46:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-15 18:46:50,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:46:50,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940942938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:50,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:46:50,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 18:46:50,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470702140] [2023-12-15 18:46:50,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:50,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:50,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:50,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:50,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:46:50,816 INFO L87 Difference]: Start difference. First operand 12221 states and 13639 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 18:46:51,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:51,437 INFO L93 Difference]: Finished difference Result 25382 states and 28426 transitions. [2023-12-15 18:46:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:51,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 328 [2023-12-15 18:46:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:51,456 INFO L225 Difference]: With dead ends: 25382 [2023-12-15 18:46:51,456 INFO L226 Difference]: Without dead ends: 13530 [2023-12-15 18:46:51,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:46:51,467 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 137 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:51,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 339 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:46:51,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13530 states. [2023-12-15 18:46:51,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13530 to 13521. [2023-12-15 18:46:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13521 states, 13520 states have (on average 1.1178254437869823) internal successors, (15113), 13520 states have internal predecessors, (15113), 0 states have call successors, (0), 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 18:46:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 15113 transitions. [2023-12-15 18:46:51,602 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 15113 transitions. Word has length 328 [2023-12-15 18:46:51,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:51,603 INFO L495 AbstractCegarLoop]: Abstraction has 13521 states and 15113 transitions. [2023-12-15 18:46:51,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 18:46:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 15113 transitions. [2023-12-15 18:46:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-12-15 18:46:51,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:51,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:46:51,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:46:51,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-15 18:46:51,819 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:51,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash 755901531, now seen corresponding path program 1 times [2023-12-15 18:46:51,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:51,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596545376] [2023-12-15 18:46:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-15 18:46:52,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:52,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596545376] [2023-12-15 18:46:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596545376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:52,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:52,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:46:52,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742817194] [2023-12-15 18:46:52,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:52,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:52,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:52,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:52,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:52,035 INFO L87 Difference]: Start difference. First operand 13521 states and 15113 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 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 18:46:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:52,423 INFO L93 Difference]: Finished difference Result 26662 states and 29834 transitions. [2023-12-15 18:46:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:52,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 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 337 [2023-12-15 18:46:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:52,442 INFO L225 Difference]: With dead ends: 26662 [2023-12-15 18:46:52,442 INFO L226 Difference]: Without dead ends: 13510 [2023-12-15 18:46:52,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:52,451 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:52,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 37 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:46:52,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13510 states. [2023-12-15 18:46:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13510 to 13505. [2023-12-15 18:46:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13505 states, 13504 states have (on average 1.117076421800948) internal successors, (15085), 13504 states have internal predecessors, (15085), 0 states have call successors, (0), 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 18:46:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13505 states to 13505 states and 15085 transitions. [2023-12-15 18:46:52,582 INFO L78 Accepts]: Start accepts. Automaton has 13505 states and 15085 transitions. Word has length 337 [2023-12-15 18:46:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:52,583 INFO L495 AbstractCegarLoop]: Abstraction has 13505 states and 15085 transitions. [2023-12-15 18:46:52,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 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 18:46:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 13505 states and 15085 transitions. [2023-12-15 18:46:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-15 18:46:52,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:52,590 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:52,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:46:52,590 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:52,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1998007539, now seen corresponding path program 1 times [2023-12-15 18:46:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508751667] [2023-12-15 18:46:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:46:52,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508751667] [2023-12-15 18:46:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508751667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:52,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:52,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:52,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643549298] [2023-12-15 18:46:52,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:52,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:46:52,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:52,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:46:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:46:52,905 INFO L87 Difference]: Start difference. First operand 13505 states and 15085 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 18:46:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:53,948 INFO L93 Difference]: Finished difference Result 28861 states and 32244 transitions. [2023-12-15 18:46:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:46:53,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 349 [2023-12-15 18:46:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:53,965 INFO L225 Difference]: With dead ends: 28861 [2023-12-15 18:46:53,965 INFO L226 Difference]: Without dead ends: 15725 [2023-12-15 18:46:53,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:46:53,974 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 215 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:53,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 135 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:46:53,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15725 states. [2023-12-15 18:46:54,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15725 to 15717. [2023-12-15 18:46:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15717 states, 15716 states have (on average 1.1105243064392976) internal successors, (17453), 15716 states have internal predecessors, (17453), 0 states have call successors, (0), 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 18:46:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15717 states to 15717 states and 17453 transitions. [2023-12-15 18:46:54,132 INFO L78 Accepts]: Start accepts. Automaton has 15717 states and 17453 transitions. Word has length 349 [2023-12-15 18:46:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:54,133 INFO L495 AbstractCegarLoop]: Abstraction has 15717 states and 17453 transitions. [2023-12-15 18:46:54,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 18:46:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 15717 states and 17453 transitions. [2023-12-15 18:46:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-15 18:46:54,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:54,142 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:46:54,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:46:54,142 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:54,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:54,143 INFO L85 PathProgramCache]: Analyzing trace with hash 420427061, now seen corresponding path program 1 times [2023-12-15 18:46:54,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:54,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31099564] [2023-12-15 18:46:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:54,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-15 18:46:54,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:54,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31099564] [2023-12-15 18:46:54,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31099564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:54,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:54,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:46:54,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611600543] [2023-12-15 18:46:54,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:54,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:46:54,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:54,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:46:54,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:46:54,612 INFO L87 Difference]: Start difference. First operand 15717 states and 17453 transitions. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:46:55,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:55,577 INFO L93 Difference]: Finished difference Result 32358 states and 35958 transitions. [2023-12-15 18:46:55,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:46:55,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 362 [2023-12-15 18:46:55,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:55,596 INFO L225 Difference]: With dead ends: 32358 [2023-12-15 18:46:55,596 INFO L226 Difference]: Without dead ends: 17010 [2023-12-15 18:46:55,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:46:55,606 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 301 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:55,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 140 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:46:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17010 states. [2023-12-15 18:46:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17010 to 16269. [2023-12-15 18:46:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16269 states, 16268 states have (on average 1.1089869682812885) internal successors, (18041), 16268 states have internal predecessors, (18041), 0 states have call successors, (0), 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 18:46:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16269 states to 16269 states and 18041 transitions. [2023-12-15 18:46:55,802 INFO L78 Accepts]: Start accepts. Automaton has 16269 states and 18041 transitions. Word has length 362 [2023-12-15 18:46:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:55,803 INFO L495 AbstractCegarLoop]: Abstraction has 16269 states and 18041 transitions. [2023-12-15 18:46:55,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:46:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 16269 states and 18041 transitions. [2023-12-15 18:46:55,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-12-15 18:46:55,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:55,813 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:46:55,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:46:55,813 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:55,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash 240693292, now seen corresponding path program 1 times [2023-12-15 18:46:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:55,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971923445] [2023-12-15 18:46:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:55,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-15 18:46:56,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:56,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971923445] [2023-12-15 18:46:56,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971923445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:56,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:56,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:56,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012149291] [2023-12-15 18:46:56,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:56,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:46:56,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:56,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:46:56,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:46:56,097 INFO L87 Difference]: Start difference. First operand 16269 states and 18041 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 18:46:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:57,251 INFO L93 Difference]: Finished difference Result 43056 states and 47696 transitions. [2023-12-15 18:46:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:46:57,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 376 [2023-12-15 18:46:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:57,279 INFO L225 Difference]: With dead ends: 43056 [2023-12-15 18:46:57,280 INFO L226 Difference]: Without dead ends: 26232 [2023-12-15 18:46:57,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:46:57,292 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 247 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:57,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 59 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:46:57,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26232 states. [2023-12-15 18:46:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26232 to 24939. [2023-12-15 18:46:57,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24939 states, 24938 states have (on average 1.101732296094314) internal successors, (27475), 24938 states have internal predecessors, (27475), 0 states have call successors, (0), 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 18:46:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24939 states to 24939 states and 27475 transitions. [2023-12-15 18:46:57,585 INFO L78 Accepts]: Start accepts. Automaton has 24939 states and 27475 transitions. Word has length 376 [2023-12-15 18:46:57,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:57,586 INFO L495 AbstractCegarLoop]: Abstraction has 24939 states and 27475 transitions. [2023-12-15 18:46:57,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 18:46:57,586 INFO L276 IsEmpty]: Start isEmpty. Operand 24939 states and 27475 transitions. [2023-12-15 18:46:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 18:46:57,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:57,601 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:57,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:46:57,601 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:57,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:57,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2047818624, now seen corresponding path program 1 times [2023-12-15 18:46:57,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:57,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235721167] [2023-12-15 18:46:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:57,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-15 18:46:57,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:57,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235721167] [2023-12-15 18:46:57,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235721167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:57,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:57,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:57,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512439458] [2023-12-15 18:46:57,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:57,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:57,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:57,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:57,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:57,899 INFO L87 Difference]: Start difference. First operand 24939 states and 27475 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 18:46:58,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:58,459 INFO L93 Difference]: Finished difference Result 28805 states and 31707 transitions. [2023-12-15 18:46:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 407 [2023-12-15 18:46:58,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:58,488 INFO L225 Difference]: With dead ends: 28805 [2023-12-15 18:46:58,488 INFO L226 Difference]: Without dead ends: 28803 [2023-12-15 18:46:58,496 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 18:46:58,497 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 165 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:58,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 130 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:46:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28803 states. [2023-12-15 18:46:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28803 to 25307. [2023-12-15 18:46:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25307 states, 25306 states have (on average 1.1021892041413104) internal successors, (27892), 25306 states have internal predecessors, (27892), 0 states have call successors, (0), 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 18:46:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25307 states to 25307 states and 27892 transitions. [2023-12-15 18:46:58,753 INFO L78 Accepts]: Start accepts. Automaton has 25307 states and 27892 transitions. Word has length 407 [2023-12-15 18:46:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:46:58,754 INFO L495 AbstractCegarLoop]: Abstraction has 25307 states and 27892 transitions. [2023-12-15 18:46:58,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 18:46:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 25307 states and 27892 transitions. [2023-12-15 18:46:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-15 18:46:58,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:46:58,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:46:58,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:46:58,767 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:46:58,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:46:58,767 INFO L85 PathProgramCache]: Analyzing trace with hash -238395606, now seen corresponding path program 1 times [2023-12-15 18:46:58,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:46:58,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936496652] [2023-12-15 18:46:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:46:58,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:46:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:46:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 458 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:46:59,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:46:59,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936496652] [2023-12-15 18:46:59,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936496652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:46:59,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:46:59,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:46:59,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624036641] [2023-12-15 18:46:59,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:46:59,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:46:59,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:46:59,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:46:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:46:59,033 INFO L87 Difference]: Start difference. First operand 25307 states and 27892 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 18:46:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:46:59,730 INFO L93 Difference]: Finished difference Result 54666 states and 60217 transitions. [2023-12-15 18:46:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:46:59,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 418 [2023-12-15 18:46:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:46:59,762 INFO L225 Difference]: With dead ends: 54666 [2023-12-15 18:46:59,763 INFO L226 Difference]: Without dead ends: 29912 [2023-12-15 18:46:59,778 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 18:46:59,779 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 110 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:46:59,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 66 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:46:59,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29912 states. [2023-12-15 18:47:00,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29912 to 29723. [2023-12-15 18:47:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29723 states, 29722 states have (on average 1.0919520893614159) internal successors, (32455), 29722 states have internal predecessors, (32455), 0 states have call successors, (0), 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 18:47:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29723 states to 29723 states and 32455 transitions. [2023-12-15 18:47:00,058 INFO L78 Accepts]: Start accepts. Automaton has 29723 states and 32455 transitions. Word has length 418 [2023-12-15 18:47:00,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:47:00,058 INFO L495 AbstractCegarLoop]: Abstraction has 29723 states and 32455 transitions. [2023-12-15 18:47:00,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 18:47:00,058 INFO L276 IsEmpty]: Start isEmpty. Operand 29723 states and 32455 transitions. [2023-12-15 18:47:00,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-15 18:47:00,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:47:00,068 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:47:00,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:47:00,068 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:47:00,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:47:00,069 INFO L85 PathProgramCache]: Analyzing trace with hash 932881900, now seen corresponding path program 1 times [2023-12-15 18:47:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:47:00,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363910434] [2023-12-15 18:47:00,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:47:00,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:47:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:47:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 627 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:47:00,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:47:00,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363910434] [2023-12-15 18:47:00,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363910434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:47:00,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:47:00,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:47:00,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455381621] [2023-12-15 18:47:00,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:47:00,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:47:00,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:47:00,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:47:00,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:47:00,616 INFO L87 Difference]: Start difference. First operand 29723 states and 32455 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 18:47:01,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:47:01,743 INFO L93 Difference]: Finished difference Result 63686 states and 69563 transitions. [2023-12-15 18:47:01,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:47:01,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 426 [2023-12-15 18:47:01,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:47:01,777 INFO L225 Difference]: With dead ends: 63686 [2023-12-15 18:47:01,778 INFO L226 Difference]: Without dead ends: 34700 [2023-12-15 18:47:01,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:47:01,790 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 265 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:47:01,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 82 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:47:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34700 states. [2023-12-15 18:47:02,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34700 to 30830. [2023-12-15 18:47:02,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30830 states, 30829 states have (on average 1.0880988679490091) internal successors, (33545), 30829 states have internal predecessors, (33545), 0 states have call successors, (0), 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 18:47:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30830 states to 30830 states and 33545 transitions. [2023-12-15 18:47:02,155 INFO L78 Accepts]: Start accepts. Automaton has 30830 states and 33545 transitions. Word has length 426 [2023-12-15 18:47:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:47:02,156 INFO L495 AbstractCegarLoop]: Abstraction has 30830 states and 33545 transitions. [2023-12-15 18:47:02,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 18:47:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 30830 states and 33545 transitions. [2023-12-15 18:47:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-12-15 18:47:02,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:47:02,166 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:47:02,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:47:02,167 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:47:02,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:47:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash 315780294, now seen corresponding path program 1 times [2023-12-15 18:47:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:47:02,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991473736] [2023-12-15 18:47:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:47:02,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:47:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:47:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 249 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:47:02,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:47:02,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991473736] [2023-12-15 18:47:02,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991473736] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:47:02,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089610820] [2023-12-15 18:47:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:47:02,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:47:02,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:47:02,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:47:02,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:47:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:47:02,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:47:02,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:47:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 230 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:47:03,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:47:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 303 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:47:05,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089610820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:47:05,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:47:05,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-12-15 18:47:05,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639937595] [2023-12-15 18:47:05,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:47:05,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 18:47:05,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:47:05,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 18:47:05,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:47:05,308 INFO L87 Difference]: Start difference. First operand 30830 states and 33545 transitions. Second operand has 12 states, 12 states have (on average 102.58333333333333) internal successors, (1231), 11 states have internal predecessors, (1231), 0 states have call successors, (0), 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 18:47:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:47:10,324 INFO L93 Difference]: Finished difference Result 76956 states and 83698 transitions. [2023-12-15 18:47:10,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-15 18:47:10,330 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 102.58333333333333) internal successors, (1231), 11 states have internal predecessors, (1231), 0 states have call successors, (0), 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 429 [2023-12-15 18:47:10,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:47:10,376 INFO L225 Difference]: With dead ends: 76956 [2023-12-15 18:47:10,376 INFO L226 Difference]: Without dead ends: 46311 [2023-12-15 18:47:10,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 851 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2023-12-15 18:47:10,396 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 2500 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 5733 mSolverCounterSat, 1488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 7221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1488 IncrementalHoareTripleChecker+Valid, 5733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:47:10,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 228 Invalid, 7221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1488 Valid, 5733 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-15 18:47:10,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46311 states. [2023-12-15 18:47:10,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46311 to 29358. [2023-12-15 18:47:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29358 states, 29357 states have (on average 1.077289913819532) internal successors, (31626), 29357 states have internal predecessors, (31626), 0 states have call successors, (0), 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 18:47:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29358 states to 29358 states and 31626 transitions. [2023-12-15 18:47:10,755 INFO L78 Accepts]: Start accepts. Automaton has 29358 states and 31626 transitions. Word has length 429 [2023-12-15 18:47:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:47:10,755 INFO L495 AbstractCegarLoop]: Abstraction has 29358 states and 31626 transitions. [2023-12-15 18:47:10,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 102.58333333333333) internal successors, (1231), 11 states have internal predecessors, (1231), 0 states have call successors, (0), 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 18:47:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 29358 states and 31626 transitions. [2023-12-15 18:47:10,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-15 18:47:10,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:47:10,763 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 18:47:10,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 18:47:10,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-15 18:47:10,966 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:47:10,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:47:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1520252139, now seen corresponding path program 1 times [2023-12-15 18:47:10,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:47:10,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410127026] [2023-12-15 18:47:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:47:10,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:47:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:47:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-15 18:47:11,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:47:11,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410127026] [2023-12-15 18:47:11,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410127026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:47:11,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:47:11,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:47:11,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238824481] [2023-12-15 18:47:11,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:47:11,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:47:11,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:47:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:47:11,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:47:11,314 INFO L87 Difference]: Start difference. First operand 29358 states and 31626 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 18:47:11,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:47:11,868 INFO L93 Difference]: Finished difference Result 34144 states and 36689 transitions. [2023-12-15 18:47:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:47:11,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 443 [2023-12-15 18:47:11,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:47:11,901 INFO L225 Difference]: With dead ends: 34144 [2023-12-15 18:47:11,902 INFO L226 Difference]: Without dead ends: 34142 [2023-12-15 18:47:11,910 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 18:47:11,911 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 167 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:47:11,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 129 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:47:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34142 states. [2023-12-15 18:47:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34142 to 28990. [2023-12-15 18:47:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28990 states, 28989 states have (on average 1.077788126530753) internal successors, (31244), 28989 states have internal predecessors, (31244), 0 states have call successors, (0), 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 18:47:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28990 states to 28990 states and 31244 transitions. [2023-12-15 18:47:12,220 INFO L78 Accepts]: Start accepts. Automaton has 28990 states and 31244 transitions. Word has length 443 [2023-12-15 18:47:12,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:47:12,221 INFO L495 AbstractCegarLoop]: Abstraction has 28990 states and 31244 transitions. [2023-12-15 18:47:12,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 18:47:12,221 INFO L276 IsEmpty]: Start isEmpty. Operand 28990 states and 31244 transitions. [2023-12-15 18:47:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-12-15 18:47:12,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:47:12,233 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:47:12,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:47:12,233 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:47:12,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:47:12,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1281662431, now seen corresponding path program 1 times [2023-12-15 18:47:12,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:47:12,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240288992] [2023-12-15 18:47:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:47:12,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:47:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:47:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 464 proven. 222 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:47:13,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:47:13,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240288992] [2023-12-15 18:47:13,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240288992] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:47:13,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957229466] [2023-12-15 18:47:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:47:13,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:47:13,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:47:13,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:47:13,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:47:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:47:13,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 18:47:13,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:47:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 464 proven. 222 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:47:14,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:47:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 464 proven. 222 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:47:15,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957229466] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:47:15,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:47:15,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-15 18:47:15,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648956116] [2023-12-15 18:47:15,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:47:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 18:47:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:47:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 18:47:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:47:15,682 INFO L87 Difference]: Start difference. First operand 28990 states and 31244 transitions. Second operand has 11 states, 11 states have (on average 64.18181818181819) internal successors, (706), 10 states have internal predecessors, (706), 0 states have call successors, (0), 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 18:47:19,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:47:19,263 INFO L93 Difference]: Finished difference Result 60948 states and 65551 transitions. [2023-12-15 18:47:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 18:47:19,263 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 64.18181818181819) internal successors, (706), 10 states have internal predecessors, (706), 0 states have call successors, (0), 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 504 [2023-12-15 18:47:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:47:19,296 INFO L225 Difference]: With dead ends: 60948 [2023-12-15 18:47:19,297 INFO L226 Difference]: Without dead ends: 32327 [2023-12-15 18:47:19,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 1003 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=536, Unknown=0, NotChecked=0, Total=812 [2023-12-15 18:47:19,310 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 2930 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4134 mSolverCounterSat, 1141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2930 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 5275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1141 IncrementalHoareTripleChecker+Valid, 4134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:47:19,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2930 Valid, 109 Invalid, 5275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1141 Valid, 4134 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 18:47:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32327 states. [2023-12-15 18:47:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32327 to 18832. [2023-12-15 18:47:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18832 states, 18831 states have (on average 1.0753013647708565) internal successors, (20249), 18831 states have internal predecessors, (20249), 0 states have call successors, (0), 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 18:47:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18832 states to 18832 states and 20249 transitions. [2023-12-15 18:47:19,550 INFO L78 Accepts]: Start accepts. Automaton has 18832 states and 20249 transitions. Word has length 504 [2023-12-15 18:47:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:47:19,550 INFO L495 AbstractCegarLoop]: Abstraction has 18832 states and 20249 transitions. [2023-12-15 18:47:19,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 64.18181818181819) internal successors, (706), 10 states have internal predecessors, (706), 0 states have call successors, (0), 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 18:47:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 18832 states and 20249 transitions. [2023-12-15 18:47:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-12-15 18:47:19,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:47:19,560 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:47:19,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:47:19,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:47:19,767 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:47:19,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:47:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1991092206, now seen corresponding path program 1 times [2023-12-15 18:47:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:47:19,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783571019] [2023-12-15 18:47:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:47:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:47:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:47:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 410 proven. 206 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-15 18:47:20,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:47:20,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783571019] [2023-12-15 18:47:20,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783571019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:47:20,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942382613] [2023-12-15 18:47:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:47:20,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:47:20,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:47:20,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:47:20,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 18:47:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:47:20,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:47:20,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:47:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 356 proven. 260 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-15 18:47:21,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:47:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 547 proven. 69 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-15 18:47:23,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942382613] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:47:23,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:47:23,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-15 18:47:23,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164570458] [2023-12-15 18:47:23,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:47:23,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:47:23,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:47:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:47:23,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:47:23,349 INFO L87 Difference]: Start difference. First operand 18832 states and 20249 transitions. Second operand has 10 states, 10 states have (on average 85.1) internal successors, (851), 10 states have internal predecessors, (851), 0 states have call successors, (0), 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 18:47:27,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:47:27,180 INFO L93 Difference]: Finished difference Result 47623 states and 51280 transitions. [2023-12-15 18:47:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:47:27,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 85.1) internal successors, (851), 10 states have internal predecessors, (851), 0 states have call successors, (0), 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 540 [2023-12-15 18:47:27,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:47:27,181 INFO L225 Difference]: With dead ends: 47623 [2023-12-15 18:47:27,181 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 18:47:27,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 1073 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:47:27,195 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 962 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4556 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 5180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 4556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:47:27,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 144 Invalid, 5180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 4556 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-15 18:47:27,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 18:47:27,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 18:47:27,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 18:47:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 18:47:27,196 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 540 [2023-12-15 18:47:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:47:27,197 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 18:47:27,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.1) internal successors, (851), 10 states have internal predecessors, (851), 0 states have call successors, (0), 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 18:47:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 18:47:27,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 18:47:27,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:47:27,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 18:47:27,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:47:27,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-15 18:47:30,475 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-173-20-17-19-14-17-13-15-5-11-4-9-3-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-200-20-17-19-14-15-13-15-5-10-4-8-3-3-2-3-1 context. [2023-12-15 18:47:30,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 18:47:30,479 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 18:47:30,509 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-15 18:47:30,511 INFO L158 Benchmark]: Toolchain (without parser) took 54492.97ms. Allocated memory was 262.1MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 208.2MB in the beginning and 1.1GB in the end (delta: -867.7MB). Peak memory consumption was 753.4MB. Max. memory is 8.0GB. [2023-12-15 18:47:30,513 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 211.8MB. Free memory is still 158.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:47:30,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.09ms. Allocated memory is still 262.1MB. Free memory was 208.2MB in the beginning and 162.6MB in the end (delta: 45.6MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2023-12-15 18:47:30,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 137.65ms. Allocated memory is still 262.1MB. Free memory was 162.6MB in the beginning and 145.3MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-15 18:47:30,513 INFO L158 Benchmark]: Boogie Preprocessor took 159.21ms. Allocated memory is still 262.1MB. Free memory was 145.3MB in the beginning and 210.3MB in the end (delta: -65.0MB). Peak memory consumption was 30.9MB. Max. memory is 8.0GB. [2023-12-15 18:47:30,514 INFO L158 Benchmark]: RCFGBuilder took 1209.86ms. Allocated memory is still 262.1MB. Free memory was 210.3MB in the beginning and 162.0MB in the end (delta: 48.4MB). Peak memory consumption was 123.9MB. Max. memory is 8.0GB. [2023-12-15 18:47:30,514 INFO L158 Benchmark]: TraceAbstraction took 52484.17ms. Allocated memory was 262.1MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 161.4MB in the beginning and 1.1GB in the end (delta: -914.5MB). Peak memory consumption was 705.6MB. Max. memory is 8.0GB. [2023-12-15 18:47:30,517 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 211.8MB. Free memory is still 158.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 497.09ms. Allocated memory is still 262.1MB. Free memory was 208.2MB in the beginning and 162.6MB in the end (delta: 45.6MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 137.65ms. Allocated memory is still 262.1MB. Free memory was 162.6MB in the beginning and 145.3MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 159.21ms. Allocated memory is still 262.1MB. Free memory was 145.3MB in the beginning and 210.3MB in the end (delta: -65.0MB). Peak memory consumption was 30.9MB. Max. memory is 8.0GB. * RCFGBuilder took 1209.86ms. Allocated memory is still 262.1MB. Free memory was 210.3MB in the beginning and 162.0MB in the end (delta: 48.4MB). Peak memory consumption was 123.9MB. Max. memory is 8.0GB. * TraceAbstraction took 52484.17ms. Allocated memory was 262.1MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 161.4MB in the beginning and 1.1GB in the end (delta: -914.5MB). Peak memory consumption was 705.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-173-20-17-19-14-17-13-15-5-11-4-9-3-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-186-20-17-19-14-17-13-15-5-11-4-9-3-3-2-3-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown