/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 18:02:34,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 18:02:34,529 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 18:02:34,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 18:02:34,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 18:02:34,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 18:02:34,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 18:02:34,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 18:02:34,571 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 18:02:34,574 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 18:02:34,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 18:02:34,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 18:02:34,575 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 18:02:34,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 18:02:34,576 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 18:02:34,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 18:02:34,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 18:02:34,577 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 18:02:34,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 18:02:34,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 18:02:34,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 18:02:34,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 18:02:34,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 18:02:34,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 18:02:34,578 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 18:02:34,578 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 18:02:34,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 18:02:34,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 18:02:34,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 18:02:34,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 18:02:34,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 18:02:34,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 18:02:34,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 18:02:34,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 18:02:34,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 18:02:34,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 18:02:34,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 18:02:34,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 18:02:34,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 18:02:34,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 18:02:34,584 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 18:02:34,584 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 18:02:34,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 18:02:34,584 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 18:02:34,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 18:02:34,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 18:02:34,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 18:02:34,981 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 18:02:34,981 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 18:02:34,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48.c [2023-12-20 18:02:36,506 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 18:02:37,217 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 18:02:37,219 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label48.c [2023-12-20 18:02:37,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3702d3896/3e0587caf05b488fb6b4c0e8ba152029/FLAG66a64758e [2023-12-20 18:02:37,301 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3702d3896/3e0587caf05b488fb6b4c0e8ba152029 [2023-12-20 18:02:37,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 18:02:37,304 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 18:02:37,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 18:02:37,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 18:02:37,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 18:02:37,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:02:37" (1/1) ... [2023-12-20 18:02:37,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd33e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:37, skipping insertion in model container [2023-12-20 18:02:37,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:02:37" (1/1) ... [2023-12-20 18:02:37,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 18:02:37,949 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/Problem19_label48.c[8401,8414] [2023-12-20 18:02:38,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 18:02:38,999 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 18:02:39,036 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/Problem19_label48.c[8401,8414] [2023-12-20 18:02:39,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 18:02:39,681 INFO L206 MainTranslator]: Completed translation [2023-12-20 18:02:39,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39 WrapperNode [2023-12-20 18:02:39,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 18:02:39,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 18:02:39,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 18:02:39,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 18:02:39,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:39,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:40,515 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2023-12-20 18:02:40,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 18:02:40,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 18:02:40,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 18:02:40,516 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 18:02:40,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:40,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:40,687 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:40,875 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]. [2023-12-20 18:02:40,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:40,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:41,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:41,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:41,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:41,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:41,416 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 18:02:41,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 18:02:41,417 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 18:02:41,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 18:02:41,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (1/1) ... [2023-12-20 18:02:41,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 18:02:41,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:02:41,444 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) [2023-12-20 18:02:41,451 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 [2023-12-20 18:02:41,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 18:02:41,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 18:02:41,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 18:02:41,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 18:02:41,515 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 18:02:41,517 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 18:02:47,864 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 18:02:47,924 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 18:02:47,924 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 18:02:47,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:02:47 BoogieIcfgContainer [2023-12-20 18:02:47,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 18:02:47,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 18:02:47,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 18:02:47,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 18:02:47,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 06:02:37" (1/3) ... [2023-12-20 18:02:47,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441937a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:02:47, skipping insertion in model container [2023-12-20 18:02:47,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:02:39" (2/3) ... [2023-12-20 18:02:47,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441937a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:02:47, skipping insertion in model container [2023-12-20 18:02:47,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:02:47" (3/3) ... [2023-12-20 18:02:47,932 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label48.c [2023-12-20 18:02:47,945 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 18:02:47,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 18:02:48,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 18:02:48,025 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;@142308af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 18:02:48,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 18:02:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 18:02:48,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:02:48,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:02:48,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:02:48,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:02:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1802008972, now seen corresponding path program 1 times [2023-12-20 18:02:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:02:48,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018252520] [2023-12-20 18:02:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:48,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:02:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:02:48,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:02:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018252520] [2023-12-20 18:02:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018252520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:02:48,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:02:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:02:48,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212491163] [2023-12-20 18:02:48,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:02:48,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 18:02:48,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:02:48,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 18:02:48,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 18:02:48,209 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 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 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:02:48,287 INFO L93 Difference]: Finished difference Result 3371 states and 6405 transitions. [2023-12-20 18:02:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 18:02:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-20 18:02:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:02:48,303 INFO L225 Difference]: With dead ends: 3371 [2023-12-20 18:02:48,303 INFO L226 Difference]: Without dead ends: 1684 [2023-12-20 18:02:48,309 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 [2023-12-20 18:02:48,311 INFO L413 NwaCegarLoop]: 3138 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, 3138 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 [2023-12-20 18:02:48,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3138 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 18:02:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-20 18:02:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2023-12-20 18:02:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.8645276292335116) internal successors, (3138), 1683 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3138 transitions. [2023-12-20 18:02:48,382 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3138 transitions. Word has length 64 [2023-12-20 18:02:48,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:02:48,382 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 3138 transitions. [2023-12-20 18:02:48,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3138 transitions. [2023-12-20 18:02:48,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 18:02:48,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:02:48,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:02:48,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 18:02:48,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:02:48,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:02:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1194989488, now seen corresponding path program 1 times [2023-12-20 18:02:48,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:02:48,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65894073] [2023-12-20 18:02:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:48,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:02:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:02:48,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:02:48,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65894073] [2023-12-20 18:02:48,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65894073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:02:48,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:02:48,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:02:48,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514979891] [2023-12-20 18:02:48,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:02:48,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:02:48,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:02:48,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:02:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:02:48,518 INFO L87 Difference]: Start difference. First operand 1684 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:02:54,710 INFO L93 Difference]: Finished difference Result 4862 states and 9131 transitions. [2023-12-20 18:02:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:02:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-20 18:02:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:02:54,726 INFO L225 Difference]: With dead ends: 4862 [2023-12-20 18:02:54,726 INFO L226 Difference]: Without dead ends: 3179 [2023-12-20 18:02:54,728 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 [2023-12-20 18:02:54,730 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 1583 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 2020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 6161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2020 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-20 18:02:54,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 1110 Invalid, 6161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2020 Valid, 4141 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-20 18:02:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2023-12-20 18:02:54,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3121. [2023-12-20 18:02:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3120 states have (on average 1.728525641025641) internal successors, (5393), 3120 states have internal predecessors, (5393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 5393 transitions. [2023-12-20 18:02:54,785 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 5393 transitions. Word has length 64 [2023-12-20 18:02:54,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:02:54,785 INFO L495 AbstractCegarLoop]: Abstraction has 3121 states and 5393 transitions. [2023-12-20 18:02:54,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:54,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 5393 transitions. [2023-12-20 18:02:54,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 18:02:54,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:02:54,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:02:54,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 18:02:54,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:02:54,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:02:54,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1665760269, now seen corresponding path program 1 times [2023-12-20 18:02:54,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:02:54,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491360370] [2023-12-20 18:02:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:54,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:02:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:02:55,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:02:55,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491360370] [2023-12-20 18:02:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491360370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:02:55,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:02:55,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:02:55,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771214220] [2023-12-20 18:02:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:02:55,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:02:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:02:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:02:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:02:55,012 INFO L87 Difference]: Start difference. First operand 3121 states and 5393 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:03:01,247 INFO L93 Difference]: Finished difference Result 9134 states and 15859 transitions. [2023-12-20 18:03:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:03:01,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-20 18:03:01,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:03:01,274 INFO L225 Difference]: With dead ends: 9134 [2023-12-20 18:03:01,275 INFO L226 Difference]: Without dead ends: 6014 [2023-12-20 18:03:01,283 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 [2023-12-20 18:03:01,287 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 2533 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 5119 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 5553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-20 18:03:01,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 990 Invalid, 5553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5119 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-20 18:03:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2023-12-20 18:03:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 6012. [2023-12-20 18:03:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.6709366162036268) internal successors, (10044), 6011 states have internal predecessors, (10044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 10044 transitions. [2023-12-20 18:03:01,419 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 10044 transitions. Word has length 132 [2023-12-20 18:03:01,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:03:01,424 INFO L495 AbstractCegarLoop]: Abstraction has 6012 states and 10044 transitions. [2023-12-20 18:03:01,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 10044 transitions. [2023-12-20 18:03:01,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 18:03:01,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:03:01,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:03:01,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 18:03:01,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:03:01,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:03:01,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1899140024, now seen corresponding path program 1 times [2023-12-20 18:03:01,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:03:01,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300794230] [2023-12-20 18:03:01,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:01,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:03:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:03:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:03:01,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:03:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300794230] [2023-12-20 18:03:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300794230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:03:01,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:03:01,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:03:01,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646655780] [2023-12-20 18:03:01,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:03:01,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:03:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:03:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:03:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:03:01,708 INFO L87 Difference]: Start difference. First operand 6012 states and 10044 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:03:08,147 INFO L93 Difference]: Finished difference Result 17597 states and 29554 transitions. [2023-12-20 18:03:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:03:08,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-20 18:03:08,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:03:08,198 INFO L225 Difference]: With dead ends: 17597 [2023-12-20 18:03:08,198 INFO L226 Difference]: Without dead ends: 11586 [2023-12-20 18:03:08,214 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 [2023-12-20 18:03:08,222 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 1534 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4336 mSolverCounterSat, 1470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 5806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1470 IncrementalHoareTripleChecker+Valid, 4336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-20 18:03:08,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1716 Invalid, 5806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1470 Valid, 4336 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-20 18:03:08,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2023-12-20 18:03:08,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11551. [2023-12-20 18:03:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11551 states, 11550 states have (on average 1.4577489177489178) internal successors, (16837), 11550 states have internal predecessors, (16837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11551 states to 11551 states and 16837 transitions. [2023-12-20 18:03:08,432 INFO L78 Accepts]: Start accepts. Automaton has 11551 states and 16837 transitions. Word has length 135 [2023-12-20 18:03:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:03:08,433 INFO L495 AbstractCegarLoop]: Abstraction has 11551 states and 16837 transitions. [2023-12-20 18:03:08,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:08,434 INFO L276 IsEmpty]: Start isEmpty. Operand 11551 states and 16837 transitions. [2023-12-20 18:03:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 18:03:08,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:03:08,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 18:03:08,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 18:03:08,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:03:08,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:03:08,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1983555769, now seen corresponding path program 1 times [2023-12-20 18:03:08,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:03:08,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142895009] [2023-12-20 18:03:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:08,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:03:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:03:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:03:08,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:03:08,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142895009] [2023-12-20 18:03:08,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142895009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:03:08,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:03:08,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:03:08,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893946399] [2023-12-20 18:03:08,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:03:08,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:03:08,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:03:08,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:03:08,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:03:08,776 INFO L87 Difference]: Start difference. First operand 11551 states and 16837 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:14,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:03:14,926 INFO L93 Difference]: Finished difference Result 34261 states and 50006 transitions. [2023-12-20 18:03:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:03:14,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2023-12-20 18:03:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:03:14,999 INFO L225 Difference]: With dead ends: 34261 [2023-12-20 18:03:15,000 INFO L226 Difference]: Without dead ends: 22711 [2023-12-20 18:03:15,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:03:15,015 INFO L413 NwaCegarLoop]: 1848 mSDtfsCounter, 1750 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 4316 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 5746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-20 18:03:15,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 2121 Invalid, 5746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4316 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-20 18:03:15,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22711 states. [2023-12-20 18:03:15,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22711 to 22686. [2023-12-20 18:03:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22686 states, 22685 states have (on average 1.281948424068768) internal successors, (29081), 22685 states have internal predecessors, (29081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:15,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22686 states to 22686 states and 29081 transitions. [2023-12-20 18:03:15,402 INFO L78 Accepts]: Start accepts. Automaton has 22686 states and 29081 transitions. Word has length 161 [2023-12-20 18:03:15,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:03:15,403 INFO L495 AbstractCegarLoop]: Abstraction has 22686 states and 29081 transitions. [2023-12-20 18:03:15,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:15,403 INFO L276 IsEmpty]: Start isEmpty. Operand 22686 states and 29081 transitions. [2023-12-20 18:03:15,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-20 18:03:15,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:03:15,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-12-20 18:03:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 18:03:15,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:03:15,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:03:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash -806539122, now seen corresponding path program 1 times [2023-12-20 18:03:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:03:15,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707669772] [2023-12-20 18:03:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:03:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:03:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 18:03:16,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:03:16,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707669772] [2023-12-20 18:03:16,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707669772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:03:16,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:03:16,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:03:16,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793450408] [2023-12-20 18:03:16,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:03:16,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:03:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:03:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:03:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:03:16,291 INFO L87 Difference]: Start difference. First operand 22686 states and 29081 transitions. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:03:24,558 INFO L93 Difference]: Finished difference Result 57743 states and 72060 transitions. [2023-12-20 18:03:24,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:03:24,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 [2023-12-20 18:03:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:03:24,622 INFO L225 Difference]: With dead ends: 57743 [2023-12-20 18:03:24,623 INFO L226 Difference]: Without dead ends: 35058 [2023-12-20 18:03:24,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 18:03:24,642 INFO L413 NwaCegarLoop]: 1789 mSDtfsCounter, 3752 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 9617 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 9789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 9617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-20 18:03:24,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3752 Valid, 2146 Invalid, 9789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 9617 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-20 18:03:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35058 states. [2023-12-20 18:03:24,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35058 to 33648. [2023-12-20 18:03:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33648 states, 33647 states have (on average 1.2262608850714773) internal successors, (41260), 33647 states have internal predecessors, (41260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33648 states to 33648 states and 41260 transitions. [2023-12-20 18:03:25,095 INFO L78 Accepts]: Start accepts. Automaton has 33648 states and 41260 transitions. Word has length 443 [2023-12-20 18:03:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:03:25,095 INFO L495 AbstractCegarLoop]: Abstraction has 33648 states and 41260 transitions. [2023-12-20 18:03:25,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 33648 states and 41260 transitions. [2023-12-20 18:03:25,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2023-12-20 18:03:25,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:03:25,104 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:03:25,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 18:03:25,104 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:03:25,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:03:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash -272472710, now seen corresponding path program 1 times [2023-12-20 18:03:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:03:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548087358] [2023-12-20 18:03:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:03:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:03:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-20 18:03:26,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:03:26,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548087358] [2023-12-20 18:03:26,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548087358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:03:26,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:03:26,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:03:26,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350106051] [2023-12-20 18:03:26,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:03:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:03:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:03:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:03:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:03:26,154 INFO L87 Difference]: Start difference. First operand 33648 states and 41260 transitions. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:35,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:03:35,721 INFO L93 Difference]: Finished difference Result 90599 states and 108577 transitions. [2023-12-20 18:03:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:03:35,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 650 [2023-12-20 18:03:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:03:35,904 INFO L225 Difference]: With dead ends: 90599 [2023-12-20 18:03:35,904 INFO L226 Difference]: Without dead ends: 56952 [2023-12-20 18:03:35,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 18:03:35,969 INFO L413 NwaCegarLoop]: 1747 mSDtfsCounter, 3757 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 9353 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 9615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 9353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-20 18:03:35,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 2099 Invalid, 9615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 9353 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-20 18:03:36,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56952 states. [2023-12-20 18:03:37,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56952 to 52813. [2023-12-20 18:03:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52813 states, 52812 states have (on average 1.1742028326895402) internal successors, (62012), 52812 states have internal predecessors, (62012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52813 states to 52813 states and 62012 transitions. [2023-12-20 18:03:37,412 INFO L78 Accepts]: Start accepts. Automaton has 52813 states and 62012 transitions. Word has length 650 [2023-12-20 18:03:37,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:03:37,412 INFO L495 AbstractCegarLoop]: Abstraction has 52813 states and 62012 transitions. [2023-12-20 18:03:37,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 52813 states and 62012 transitions. [2023-12-20 18:03:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-12-20 18:03:37,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:03:37,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:03:37,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 18:03:37,424 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:03:37,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:03:37,424 INFO L85 PathProgramCache]: Analyzing trace with hash -917013932, now seen corresponding path program 1 times [2023-12-20 18:03:37,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:03:37,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107623943] [2023-12-20 18:03:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:37,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:03:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:03:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-12-20 18:03:39,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:03:39,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107623943] [2023-12-20 18:03:39,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107623943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:03:39,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:03:39,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:03:39,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156766957] [2023-12-20 18:03:39,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:03:39,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:03:39,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:03:39,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:03:39,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:03:39,052 INFO L87 Difference]: Start difference. First operand 52813 states and 62012 transitions. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:03:45,945 INFO L93 Difference]: Finished difference Result 108386 states and 126802 transitions. [2023-12-20 18:03:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:03:45,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 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 678 [2023-12-20 18:03:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:03:46,069 INFO L225 Difference]: With dead ends: 108386 [2023-12-20 18:03:46,070 INFO L226 Difference]: Without dead ends: 55543 [2023-12-20 18:03:46,097 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 [2023-12-20 18:03:46,099 INFO L413 NwaCegarLoop]: 1766 mSDtfsCounter, 1138 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 7322 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 7330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-20 18:03:46,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2107 Invalid, 7330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7322 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-20 18:03:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55543 states. [2023-12-20 18:03:46,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55543 to 55543. [2023-12-20 18:03:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55543 states, 55542 states have (on average 1.1657304382269273) internal successors, (64747), 55542 states have internal predecessors, (64747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55543 states to 55543 states and 64747 transitions. [2023-12-20 18:03:47,147 INFO L78 Accepts]: Start accepts. Automaton has 55543 states and 64747 transitions. Word has length 678 [2023-12-20 18:03:47,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:03:47,147 INFO L495 AbstractCegarLoop]: Abstraction has 55543 states and 64747 transitions. [2023-12-20 18:03:47,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:47,148 INFO L276 IsEmpty]: Start isEmpty. Operand 55543 states and 64747 transitions. [2023-12-20 18:03:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-20 18:03:47,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:03:47,171 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:03:47,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 18:03:47,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:03:47,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:03:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash -747203656, now seen corresponding path program 1 times [2023-12-20 18:03:47,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:03:47,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831405520] [2023-12-20 18:03:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:47,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:03:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:03:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-20 18:03:49,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:03:49,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831405520] [2023-12-20 18:03:49,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831405520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:03:49,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:03:49,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:03:49,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062118337] [2023-12-20 18:03:49,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:03:49,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:03:49,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:03:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:03:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:03:49,631 INFO L87 Difference]: Start difference. First operand 55543 states and 64747 transitions. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:56,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:03:56,266 INFO L93 Difference]: Finished difference Result 133113 states and 156924 transitions. [2023-12-20 18:03:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:03:56,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 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 763 [2023-12-20 18:03:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:03:56,363 INFO L225 Difference]: With dead ends: 133113 [2023-12-20 18:03:56,364 INFO L226 Difference]: Without dead ends: 80301 [2023-12-20 18:03:56,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:03:56,422 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1666 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4262 mSolverCounterSat, 2245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2245 IncrementalHoareTripleChecker+Valid, 4262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-20 18:03:56,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 811 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2245 Valid, 4262 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-20 18:03:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80301 states. [2023-12-20 18:03:57,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80301 to 77412. [2023-12-20 18:03:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77412 states, 77411 states have (on average 1.1824934440841741) internal successors, (91538), 77411 states have internal predecessors, (91538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77412 states to 77412 states and 91538 transitions. [2023-12-20 18:03:57,651 INFO L78 Accepts]: Start accepts. Automaton has 77412 states and 91538 transitions. Word has length 763 [2023-12-20 18:03:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:03:57,651 INFO L495 AbstractCegarLoop]: Abstraction has 77412 states and 91538 transitions. [2023-12-20 18:03:57,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:03:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 77412 states and 91538 transitions. [2023-12-20 18:03:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2023-12-20 18:03:57,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:03:57,688 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:03:57,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 18:03:57,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:03:57,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:03:57,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2030023199, now seen corresponding path program 1 times [2023-12-20 18:03:57,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:03:57,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670216974] [2023-12-20 18:03:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:03:57,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:03:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:04:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 125 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:04:01,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:04:01,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670216974] [2023-12-20 18:04:01,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670216974] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:04:01,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006549120] [2023-12-20 18:04:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:04:01,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:04:01,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:04:01,692 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) [2023-12-20 18:04:01,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 18:04:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:04:02,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 18:04:02,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:04:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:04:03,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:04:03,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006549120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:04:03,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:04:03,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 18:04:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123201799] [2023-12-20 18:04:03,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:04:03,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:04:03,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:04:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:04:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 18:04:03,511 INFO L87 Difference]: Start difference. First operand 77412 states and 91538 transitions. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:04:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:04:12,784 INFO L93 Difference]: Finished difference Result 227184 states and 276782 transitions. [2023-12-20 18:04:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:04:12,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 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 770 [2023-12-20 18:04:12,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:04:13,136 INFO L225 Difference]: With dead ends: 227184 [2023-12-20 18:04:13,137 INFO L226 Difference]: Without dead ends: 152503 [2023-12-20 18:04:13,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 18:04:13,191 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 2512 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 7102 mSolverCounterSat, 2875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 9977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2875 IncrementalHoareTripleChecker+Valid, 7102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-20 18:04:13,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2512 Valid, 926 Invalid, 9977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2875 Valid, 7102 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-20 18:04:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152503 states. [2023-12-20 18:04:15,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152503 to 138830. [2023-12-20 18:04:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138830 states, 138829 states have (on average 1.2033004631597144) internal successors, (167053), 138829 states have internal predecessors, (167053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:04:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138830 states to 138830 states and 167053 transitions. [2023-12-20 18:04:15,715 INFO L78 Accepts]: Start accepts. Automaton has 138830 states and 167053 transitions. Word has length 770 [2023-12-20 18:04:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:04:15,715 INFO L495 AbstractCegarLoop]: Abstraction has 138830 states and 167053 transitions. [2023-12-20 18:04:15,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:04:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 138830 states and 167053 transitions. [2023-12-20 18:04:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2023-12-20 18:04:16,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:04:16,116 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:04:16,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 18:04:16,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 18:04:16,325 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:04:16,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:04:16,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1198005448, now seen corresponding path program 1 times [2023-12-20 18:04:16,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:04:16,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480709563] [2023-12-20 18:04:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:04:16,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:04:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:04:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 681 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 18:04:17,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:04:17,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480709563] [2023-12-20 18:04:17,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480709563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:04:17,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:04:17,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 18:04:17,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966785619] [2023-12-20 18:04:17,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:04:17,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:04:17,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:04:17,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:04:17,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:04:17,525 INFO L87 Difference]: Start difference. First operand 138830 states and 167053 transitions. Second operand has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:04:30,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:04:30,003 INFO L93 Difference]: Finished difference Result 440433 states and 540161 transitions. [2023-12-20 18:04:30,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:04:30,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 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 970 [2023-12-20 18:04:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:04:30,824 INFO L225 Difference]: With dead ends: 440433 [2023-12-20 18:04:30,825 INFO L226 Difference]: Without dead ends: 304334 [2023-12-20 18:04:30,925 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 [2023-12-20 18:04:30,926 INFO L413 NwaCegarLoop]: 1121 mSDtfsCounter, 3395 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 8676 mSolverCounterSat, 2955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3395 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 11631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2955 IncrementalHoareTripleChecker+Valid, 8676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-20 18:04:30,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3395 Valid, 1392 Invalid, 11631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2955 Valid, 8676 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-20 18:04:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304334 states. [2023-12-20 18:04:34,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304334 to 291872. [2023-12-20 18:04:35,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291872 states, 291871 states have (on average 1.1960797749690788) internal successors, (349101), 291871 states have internal predecessors, (349101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:04:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291872 states to 291872 states and 349101 transitions. [2023-12-20 18:04:36,244 INFO L78 Accepts]: Start accepts. Automaton has 291872 states and 349101 transitions. Word has length 970 [2023-12-20 18:04:36,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:04:36,245 INFO L495 AbstractCegarLoop]: Abstraction has 291872 states and 349101 transitions. [2023-12-20 18:04:36,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:04:36,245 INFO L276 IsEmpty]: Start isEmpty. Operand 291872 states and 349101 transitions. [2023-12-20 18:04:36,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2023-12-20 18:04:36,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:04:36,283 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:04:36,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 18:04:36,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:04:36,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:04:36,284 INFO L85 PathProgramCache]: Analyzing trace with hash -819408102, now seen corresponding path program 1 times [2023-12-20 18:04:36,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:04:36,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978790795] [2023-12-20 18:04:36,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:04:36,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:04:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:04:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-20 18:04:38,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:04:38,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978790795] [2023-12-20 18:04:38,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978790795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:04:38,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:04:38,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:04:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356154943] [2023-12-20 18:04:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:04:38,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:04:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:04:38,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:04:38,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:04:38,721 INFO L87 Difference]: Start difference. First operand 291872 states and 349101 transitions. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:04:49,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:04:49,848 INFO L93 Difference]: Finished difference Result 583772 states and 698608 transitions. [2023-12-20 18:04:49,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:04:49,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 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 982 [2023-12-20 18:04:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:04:51,018 INFO L225 Difference]: With dead ends: 583772 [2023-12-20 18:04:51,018 INFO L226 Difference]: Without dead ends: 294631 [2023-12-20 18:04:51,246 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 [2023-12-20 18:04:51,247 INFO L413 NwaCegarLoop]: 1862 mSDtfsCounter, 2510 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 9070 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 9875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 9070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-20 18:04:51,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2510 Valid, 2383 Invalid, 9875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 9070 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-20 18:04:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294631 states. [2023-12-20 18:04:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294631 to 291864. [2023-12-20 18:04:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291864 states, 291863 states have (on average 1.1889996333896382) internal successors, (347025), 291863 states have internal predecessors, (347025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:04:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291864 states to 291864 states and 347025 transitions. [2023-12-20 18:04:57,069 INFO L78 Accepts]: Start accepts. Automaton has 291864 states and 347025 transitions. Word has length 982 [2023-12-20 18:04:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:04:57,070 INFO L495 AbstractCegarLoop]: Abstraction has 291864 states and 347025 transitions. [2023-12-20 18:04:57,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:04:57,070 INFO L276 IsEmpty]: Start isEmpty. Operand 291864 states and 347025 transitions. [2023-12-20 18:04:57,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2023-12-20 18:04:57,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:04:57,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 18:04:57,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 18:04:57,120 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:04:57,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:04:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash -523172909, now seen corresponding path program 1 times [2023-12-20 18:04:57,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:04:57,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271151353] [2023-12-20 18:04:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:04:57,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:04:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:04:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-12-20 18:04:58,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:04:58,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271151353] [2023-12-20 18:04:58,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271151353] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:04:58,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016954548] [2023-12-20 18:04:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:04:58,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:04:58,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:04:58,727 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) [2023-12-20 18:04:58,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 18:04:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:04:59,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:04:59,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:05:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2023-12-20 18:05:00,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:05:00,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016954548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:05:00,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:05:00,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-20 18:05:00,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302691574] [2023-12-20 18:05:00,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:05:00,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:05:00,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:05:00,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:05:00,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 18:05:00,165 INFO L87 Difference]: Start difference. First operand 291864 states and 347025 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:05:11,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:05:11,361 INFO L93 Difference]: Finished difference Result 720235 states and 856037 transitions. [2023-12-20 18:05:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:05:11,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 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 1042 [2023-12-20 18:05:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:05:12,810 INFO L225 Difference]: With dead ends: 720235 [2023-12-20 18:05:12,811 INFO L226 Difference]: Without dead ends: 431102 [2023-12-20 18:05:13,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 1041 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 18:05:13,063 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 1017 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 4713 mSolverCounterSat, 980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 5693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 4713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-20 18:05:13,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 1535 Invalid, 5693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [980 Valid, 4713 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-20 18:05:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431102 states. [2023-12-20 18:05:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431102 to 390137. [2023-12-20 18:05:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390137 states, 390136 states have (on average 1.1304545081715094) internal successors, (441031), 390136 states have internal predecessors, (441031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:05:21,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390137 states to 390137 states and 441031 transitions. [2023-12-20 18:05:21,014 INFO L78 Accepts]: Start accepts. Automaton has 390137 states and 441031 transitions. Word has length 1042 [2023-12-20 18:05:21,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:05:21,014 INFO L495 AbstractCegarLoop]: Abstraction has 390137 states and 441031 transitions. [2023-12-20 18:05:21,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:05:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 390137 states and 441031 transitions. [2023-12-20 18:05:21,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2023-12-20 18:05:21,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:05:21,692 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:05:21,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 18:05:21,898 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,SelfDestructingSolverStorable12 [2023-12-20 18:05:21,899 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:05:21,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:05:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1853724332, now seen corresponding path program 1 times [2023-12-20 18:05:21,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:05:21,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324655443] [2023-12-20 18:05:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:05:21,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:05:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:05:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 189 proven. 565 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-20 18:05:24,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:05:24,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324655443] [2023-12-20 18:05:24,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324655443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:05:24,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346184625] [2023-12-20 18:05:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:05:24,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:05:24,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:05:24,278 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) [2023-12-20 18:05:24,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 18:05:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:05:24,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:05:24,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:05:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2023-12-20 18:05:24,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:05:24,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346184625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:05:24,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:05:24,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-20 18:05:24,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977516791] [2023-12-20 18:05:24,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:05:24,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:05:24,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:05:24,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:05:24,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 18:05:24,831 INFO L87 Difference]: Start difference. First operand 390137 states and 441031 transitions. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:05:34,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:05:34,046 INFO L93 Difference]: Finished difference Result 886745 states and 1012339 transitions. [2023-12-20 18:05:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:05:34,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 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 1059 [2023-12-20 18:05:34,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:05:35,386 INFO L225 Difference]: With dead ends: 886745 [2023-12-20 18:05:35,386 INFO L226 Difference]: Without dead ends: 476127 [2023-12-20 18:05:36,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 1059 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 18:05:36,282 INFO L413 NwaCegarLoop]: 2700 mSDtfsCounter, 1606 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 3733 mSolverCounterSat, 1773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 5506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1773 IncrementalHoareTripleChecker+Valid, 3733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-20 18:05:36,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 2839 Invalid, 5506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1773 Valid, 3733 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-20 18:05:36,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476127 states. [2023-12-20 18:05:42,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476127 to 451522. [2023-12-20 18:05:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451522 states, 451521 states have (on average 1.0779720101612107) internal successors, (486727), 451521 states have internal predecessors, (486727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:05:45,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451522 states to 451522 states and 486727 transitions. [2023-12-20 18:05:45,188 INFO L78 Accepts]: Start accepts. Automaton has 451522 states and 486727 transitions. Word has length 1059 [2023-12-20 18:05:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:05:45,189 INFO L495 AbstractCegarLoop]: Abstraction has 451522 states and 486727 transitions. [2023-12-20 18:05:45,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:05:45,190 INFO L276 IsEmpty]: Start isEmpty. Operand 451522 states and 486727 transitions. [2023-12-20 18:05:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1177 [2023-12-20 18:05:45,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:05:45,209 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:05:45,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 18:05:45,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:05:45,420 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:05:45,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:05:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1340624628, now seen corresponding path program 1 times [2023-12-20 18:05:45,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:05:45,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290374557] [2023-12-20 18:05:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:05:45,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:05:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:05:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 113 proven. 735 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-12-20 18:05:46,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:05:46,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290374557] [2023-12-20 18:05:46,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290374557] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:05:46,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905235704] [2023-12-20 18:05:46,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:05:46,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:05:46,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:05:46,818 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) [2023-12-20 18:05:46,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 18:05:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:05:47,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:05:47,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:05:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2023-12-20 18:05:47,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:05:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905235704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:05:47,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:05:47,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 18:05:47,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887035563] [2023-12-20 18:05:47,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:05:47,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:05:47,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:05:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:05:47,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 18:05:47,291 INFO L87 Difference]: Start difference. First operand 451522 states and 486727 transitions. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:05:57,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:05:57,817 INFO L93 Difference]: Finished difference Result 1073646 states and 1163706 transitions. [2023-12-20 18:05:57,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:05:57,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 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 1176 [2023-12-20 18:05:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:05:59,441 INFO L225 Difference]: With dead ends: 1073646 [2023-12-20 18:05:59,441 INFO L226 Difference]: Without dead ends: 623490 [2023-12-20 18:05:59,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 1175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 18:05:59,879 INFO L413 NwaCegarLoop]: 2564 mSDtfsCounter, 1395 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 4089 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 4874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 4089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-20 18:05:59,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 2795 Invalid, 4874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 4089 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-20 18:06:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623490 states. [2023-12-20 18:06:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623490 to 618018. [2023-12-20 18:06:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618018 states, 618017 states have (on average 1.0738442470029141) internal successors, (663654), 618017 states have internal predecessors, (663654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:06:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618018 states to 618018 states and 663654 transitions. [2023-12-20 18:06:12,889 INFO L78 Accepts]: Start accepts. Automaton has 618018 states and 663654 transitions. Word has length 1176 [2023-12-20 18:06:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:06:12,890 INFO L495 AbstractCegarLoop]: Abstraction has 618018 states and 663654 transitions. [2023-12-20 18:06:12,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:06:12,890 INFO L276 IsEmpty]: Start isEmpty. Operand 618018 states and 663654 transitions. [2023-12-20 18:06:12,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1199 [2023-12-20 18:06:12,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:06:12,925 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:06:12,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 18:06:13,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-20 18:06:13,135 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:06:13,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:06:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1971713101, now seen corresponding path program 1 times [2023-12-20 18:06:13,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:06:13,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061168275] [2023-12-20 18:06:13,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:06:13,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:06:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:06:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 1226 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-12-20 18:06:14,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:06:14,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061168275] [2023-12-20 18:06:14,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061168275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:06:14,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:06:14,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:06:14,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590779008] [2023-12-20 18:06:14,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:06:14,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:06:14,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:06:14,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:06:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:06:14,537 INFO L87 Difference]: Start difference. First operand 618018 states and 663654 transitions. Second operand has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:06:24,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:06:24,409 INFO L93 Difference]: Finished difference Result 1346728 states and 1446758 transitions. [2023-12-20 18:06:24,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:06:24,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 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 1198 [2023-12-20 18:06:24,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:06:27,304 INFO L225 Difference]: With dead ends: 1346728 [2023-12-20 18:06:27,304 INFO L226 Difference]: Without dead ends: 730076 [2023-12-20 18:06:28,030 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 [2023-12-20 18:06:28,031 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 1373 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 4179 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 4590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 4179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 18:06:28,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1468 Invalid, 4590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 18:06:29,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730076 states. [2023-12-20 18:06:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730076 to 698560. [2023-12-20 18:06:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698560 states, 698559 states have (on average 1.0690478542256274) internal successors, (746793), 698559 states have internal predecessors, (746793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:06:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698560 states to 698560 states and 746793 transitions. [2023-12-20 18:06:44,009 INFO L78 Accepts]: Start accepts. Automaton has 698560 states and 746793 transitions. Word has length 1198 [2023-12-20 18:06:44,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:06:44,009 INFO L495 AbstractCegarLoop]: Abstraction has 698560 states and 746793 transitions. [2023-12-20 18:06:44,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:06:44,010 INFO L276 IsEmpty]: Start isEmpty. Operand 698560 states and 746793 transitions. [2023-12-20 18:06:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1211 [2023-12-20 18:06:44,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:06:44,039 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:06:44,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 18:06:44,039 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:06:44,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:06:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2014986318, now seen corresponding path program 1 times [2023-12-20 18:06:44,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:06:44,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166973456] [2023-12-20 18:06:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:06:44,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:06:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat