/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 16:47:38,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 16:47:38,328 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 16:47:38,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 16:47:38,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 16:47:38,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 16:47:38,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 16:47:38,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 16:47:38,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 16:47:38,366 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 16:47:38,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 16:47:38,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 16:47:38,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 16:47:38,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 16:47:38,369 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 16:47:38,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 16:47:38,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 16:47:38,370 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 16:47:38,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 16:47:38,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 16:47:38,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 16:47:38,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 16:47:38,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 16:47:38,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 16:47:38,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 16:47:38,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 16:47:38,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 16:47:38,373 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 16:47:38,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 16:47:38,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 16:47:38,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 16:47:38,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 16:47:38,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 16:47:38,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 16:47:38,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 16:47:38,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 16:47:38,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 16:47:38,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 16:47:38,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 16:47:38,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 16:47:38,376 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 16:47:38,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 16:47:38,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 16:47:38,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 16:47:38,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 16:47:38,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 16:47:38,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 16:47:38,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 16:47:38,614 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 16:47:38,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19.c [2023-12-20 16:47:39,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 16:47:40,176 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 16:47:40,177 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label19.c [2023-12-20 16:47:40,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f11190cc/3176a35bb4ae4eaa8292068d14376678/FLAG340986a70 [2023-12-20 16:47:40,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f11190cc/3176a35bb4ae4eaa8292068d14376678 [2023-12-20 16:47:40,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 16:47:40,229 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 16:47:40,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 16:47:40,232 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 16:47:40,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 16:47:40,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:47:40" (1/1) ... [2023-12-20 16:47:40,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9934990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:40, skipping insertion in model container [2023-12-20 16:47:40,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:47:40" (1/1) ... [2023-12-20 16:47:40,346 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 16:47:40,525 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label19.c[2130,2143] [2023-12-20 16:47:41,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 16:47:41,310 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 16:47:41,328 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label19.c[2130,2143] [2023-12-20 16:47:41,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 16:47:41,719 INFO L206 MainTranslator]: Completed translation [2023-12-20 16:47:41,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41 WrapperNode [2023-12-20 16:47:41,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 16:47:41,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 16:47:41,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 16:47:41,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 16:47:41,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:41,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:41,999 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2023-12-20 16:47:41,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 16:47:41,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 16:47:42,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 16:47:42,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 16:47:42,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:42,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:42,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:42,247 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 16:47:42,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:42,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:42,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:42,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:42,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:42,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:42,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 16:47:42,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 16:47:42,549 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 16:47:42,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 16:47:42,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (1/1) ... [2023-12-20 16:47:42,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 16:47:42,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:47:42,577 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 16:47:42,591 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 16:47:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 16:47:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 16:47:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 16:47:42,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 16:47:42,677 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 16:47:42,680 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 16:47:46,377 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 16:47:46,440 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 16:47:46,440 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 16:47:46,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:47:46 BoogieIcfgContainer [2023-12-20 16:47:46,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 16:47:46,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 16:47:46,443 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 16:47:46,446 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 16:47:46,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 04:47:40" (1/3) ... [2023-12-20 16:47:46,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1fc70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:47:46, skipping insertion in model container [2023-12-20 16:47:46,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:47:41" (2/3) ... [2023-12-20 16:47:46,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1fc70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:47:46, skipping insertion in model container [2023-12-20 16:47:46,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:47:46" (3/3) ... [2023-12-20 16:47:46,448 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label19.c [2023-12-20 16:47:46,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 16:47:46,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 16:47:46,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 16:47:46,522 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;@60882452, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 16:47:46,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 16:47:46,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:47:46,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-20 16:47:46,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:47:46,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:47:46,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:47:46,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:47:46,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1031439777, now seen corresponding path program 1 times [2023-12-20 16:47:46,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:47:46,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659086703] [2023-12-20 16:47:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:47:46,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:47:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:47:46,646 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 16:47:46,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:47:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659086703] [2023-12-20 16:47:46,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659086703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:47:46,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:47:46,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:47:46,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936995711] [2023-12-20 16:47:46,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:47:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 16:47:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:47:46,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 16:47:46,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 16:47:46,677 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:47:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:47:46,775 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-20 16:47:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 16:47:46,778 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-12-20 16:47:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:47:46,793 INFO L225 Difference]: With dead ends: 1511 [2023-12-20 16:47:46,793 INFO L226 Difference]: Without dead ends: 754 [2023-12-20 16:47:46,798 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 16:47:46,805 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 16:47:46,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 16:47:46,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-20 16:47:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-20 16:47:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:47:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-20 16:47:46,882 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 13 [2023-12-20 16:47:46,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:47:46,882 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-20 16:47:46,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:47:46,883 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-20 16:47:46,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-20 16:47:46,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:47:46,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:47:46,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 16:47:46,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:47:46,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:47:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1086407081, now seen corresponding path program 1 times [2023-12-20 16:47:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:47:46,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175421083] [2023-12-20 16:47:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:47:46,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:47:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:47:46,989 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 16:47:46,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:47:46,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175421083] [2023-12-20 16:47:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175421083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:47:46,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:47:46,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:47:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136953849] [2023-12-20 16:47:46,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:47:46,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:47:46,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:47:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:47:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:47:46,993 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:47:50,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:47:50,400 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-12-20 16:47:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:47:50,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-12-20 16:47:50,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:47:50,408 INFO L225 Difference]: With dead ends: 2258 [2023-12-20 16:47:50,408 INFO L226 Difference]: Without dead ends: 1505 [2023-12-20 16:47:50,411 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 16:47:50,412 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 801 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 16:47:50,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 75 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 16:47:50,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-20 16:47:50,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-12-20 16:47:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.8703457446808511) internal successors, (2813), 1504 states have internal predecessors, (2813), 0 states have call successors, (0), 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 16:47:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2813 transitions. [2023-12-20 16:47:50,467 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2813 transitions. Word has length 13 [2023-12-20 16:47:50,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:47:50,467 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2813 transitions. [2023-12-20 16:47:50,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 16:47:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2813 transitions. [2023-12-20 16:47:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 16:47:50,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:47:50,469 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 16:47:50,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 16:47:50,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:47:50,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:47:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash 468360501, now seen corresponding path program 1 times [2023-12-20 16:47:50,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:47:50,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580906194] [2023-12-20 16:47:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:47:50,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:47:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:47:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:47:50,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:47:50,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580906194] [2023-12-20 16:47:50,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580906194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:47:50,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:47:50,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:47:50,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863142820] [2023-12-20 16:47:50,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:47:50,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:47:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:47:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:47:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:47:50,656 INFO L87 Difference]: Start difference. First operand 1505 states and 2813 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 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 16:47:53,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:47:53,862 INFO L93 Difference]: Finished difference Result 4513 states and 8437 transitions. [2023-12-20 16:47:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:47:53,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-20 16:47:53,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:47:53,873 INFO L225 Difference]: With dead ends: 4513 [2023-12-20 16:47:53,874 INFO L226 Difference]: Without dead ends: 3009 [2023-12-20 16:47:53,876 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 16:47:53,878 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 16:47:53,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 352 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 16:47:53,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2023-12-20 16:47:53,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 3007. [2023-12-20 16:47:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.6533599467731204) internal successors, (4970), 3006 states have internal predecessors, (4970), 0 states have call successors, (0), 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 16:47:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4970 transitions. [2023-12-20 16:47:53,945 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4970 transitions. Word has length 86 [2023-12-20 16:47:53,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:47:53,946 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4970 transitions. [2023-12-20 16:47:53,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 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 16:47:53,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4970 transitions. [2023-12-20 16:47:53,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 16:47:53,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:47:53,949 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 16:47:53,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 16:47:53,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:47:53,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:47:53,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1338757234, now seen corresponding path program 1 times [2023-12-20 16:47:53,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:47:53,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271820760] [2023-12-20 16:47:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:47:53,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:47:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:47:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:47:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:47:54,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271820760] [2023-12-20 16:47:54,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271820760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:47:54,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:47:54,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:47:54,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408246515] [2023-12-20 16:47:54,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:47:54,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 16:47:54,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:47:54,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 16:47:54,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 16:47:54,272 INFO L87 Difference]: Start difference. First operand 3007 states and 4970 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 16:47:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:47:58,726 INFO L93 Difference]: Finished difference Result 8266 states and 13428 transitions. [2023-12-20 16:47:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 16:47:58,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-20 16:47:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:47:58,748 INFO L225 Difference]: With dead ends: 8266 [2023-12-20 16:47:58,748 INFO L226 Difference]: Without dead ends: 5260 [2023-12-20 16:47:58,752 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 16:47:58,753 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2153 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4999 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2153 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 5850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-20 16:47:58,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2153 Valid, 351 Invalid, 5850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4999 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-20 16:47:58,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2023-12-20 16:47:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 5260. [2023-12-20 16:47:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.510363186917665) internal successors, (7943), 5259 states have internal predecessors, (7943), 0 states have call successors, (0), 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 16:47:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7943 transitions. [2023-12-20 16:47:58,832 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7943 transitions. Word has length 99 [2023-12-20 16:47:58,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:47:58,833 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 7943 transitions. [2023-12-20 16:47:58,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 16:47:58,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7943 transitions. [2023-12-20 16:47:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 16:47:58,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:47:58,836 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 16:47:58,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 16:47:58,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:47:58,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:47:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1013448331, now seen corresponding path program 1 times [2023-12-20 16:47:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:47:58,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694376863] [2023-12-20 16:47:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:47:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:47:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:47:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 16:47:59,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:47:59,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694376863] [2023-12-20 16:47:59,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694376863] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:47:59,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202446367] [2023-12-20 16:47:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:47:59,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:47:59,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:47:59,128 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 16:47:59,140 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 16:47:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:47:59,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 16:47:59,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:47:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 16:47:59,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:47:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202446367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:47:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:47:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-20 16:47:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386167726] [2023-12-20 16:47:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:47:59,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:47:59,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:47:59,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:47:59,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 16:47:59,432 INFO L87 Difference]: Start difference. First operand 5260 states and 7943 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 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 16:48:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:02,429 INFO L93 Difference]: Finished difference Result 14274 states and 22312 transitions. [2023-12-20 16:48:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:48:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 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 154 [2023-12-20 16:48:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:02,457 INFO L225 Difference]: With dead ends: 14274 [2023-12-20 16:48:02,457 INFO L226 Difference]: Without dead ends: 9766 [2023-12-20 16:48:02,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 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 16:48:02,468 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:02,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 664 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 16:48:02,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2023-12-20 16:48:02,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2023-12-20 16:48:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.387916026625704) internal successors, (13553), 9765 states have internal predecessors, (13553), 0 states have call successors, (0), 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 16:48:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 13553 transitions. [2023-12-20 16:48:02,619 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 13553 transitions. Word has length 154 [2023-12-20 16:48:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:02,621 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 13553 transitions. [2023-12-20 16:48:02,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 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 16:48:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 13553 transitions. [2023-12-20 16:48:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-20 16:48:02,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:02,626 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:48:02,635 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 16:48:02,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:48:02,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:02,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:02,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1826438495, now seen corresponding path program 1 times [2023-12-20 16:48:02,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:02,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797301219] [2023-12-20 16:48:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:02,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:48:03,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:03,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797301219] [2023-12-20 16:48:03,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797301219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:48:03,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:48:03,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:48:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074274038] [2023-12-20 16:48:03,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:48:03,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 16:48:03,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:03,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 16:48:03,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 16:48:03,198 INFO L87 Difference]: Start difference. First operand 9766 states and 13553 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:48:06,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:06,630 INFO L93 Difference]: Finished difference Result 23323 states and 32176 transitions. [2023-12-20 16:48:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 16:48:06,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2023-12-20 16:48:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:06,667 INFO L225 Difference]: With dead ends: 23323 [2023-12-20 16:48:06,668 INFO L226 Difference]: Without dead ends: 14272 [2023-12-20 16:48:06,680 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 16:48:06,681 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 688 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3805 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 4133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 3805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:06,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 709 Invalid, 4133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 3805 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 16:48:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14272 states. [2023-12-20 16:48:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14272 to 14272. [2023-12-20 16:48:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14272 states, 14271 states have (on average 1.2779763156050732) internal successors, (18238), 14271 states have internal predecessors, (18238), 0 states have call successors, (0), 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 16:48:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14272 states to 14272 states and 18238 transitions. [2023-12-20 16:48:06,962 INFO L78 Accepts]: Start accepts. Automaton has 14272 states and 18238 transitions. Word has length 170 [2023-12-20 16:48:06,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:06,962 INFO L495 AbstractCegarLoop]: Abstraction has 14272 states and 18238 transitions. [2023-12-20 16:48:06,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:48:06,963 INFO L276 IsEmpty]: Start isEmpty. Operand 14272 states and 18238 transitions. [2023-12-20 16:48:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-20 16:48:06,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:06,966 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:48:06,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 16:48:06,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:06,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash -800617370, now seen corresponding path program 1 times [2023-12-20 16:48:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491984554] [2023-12-20 16:48:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:06,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-20 16:48:07,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:07,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491984554] [2023-12-20 16:48:07,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491984554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:48:07,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:48:07,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:48:07,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375947916] [2023-12-20 16:48:07,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:48:07,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:48:07,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:48:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:48:07,217 INFO L87 Difference]: Start difference. First operand 14272 states and 18238 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 16:48:09,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:09,981 INFO L93 Difference]: Finished difference Result 34551 states and 45265 transitions. [2023-12-20 16:48:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:48:09,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 244 [2023-12-20 16:48:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:10,024 INFO L225 Difference]: With dead ends: 34551 [2023-12-20 16:48:10,024 INFO L226 Difference]: Without dead ends: 21031 [2023-12-20 16:48:10,043 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 16:48:10,044 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 787 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:10,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1306 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 16:48:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21031 states. [2023-12-20 16:48:10,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21031 to 20280. [2023-12-20 16:48:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20280 states, 20279 states have (on average 1.2444400611469995) internal successors, (25236), 20279 states have internal predecessors, (25236), 0 states have call successors, (0), 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 16:48:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20280 states to 20280 states and 25236 transitions. [2023-12-20 16:48:10,362 INFO L78 Accepts]: Start accepts. Automaton has 20280 states and 25236 transitions. Word has length 244 [2023-12-20 16:48:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:10,362 INFO L495 AbstractCegarLoop]: Abstraction has 20280 states and 25236 transitions. [2023-12-20 16:48:10,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 16:48:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 20280 states and 25236 transitions. [2023-12-20 16:48:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-20 16:48:10,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:10,366 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:48:10,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 16:48:10,367 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:10,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:10,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1553180626, now seen corresponding path program 1 times [2023-12-20 16:48:10,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:10,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430253916] [2023-12-20 16:48:10,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:10,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-20 16:48:10,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:10,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430253916] [2023-12-20 16:48:10,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430253916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:48:10,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:48:10,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:48:10,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619321145] [2023-12-20 16:48:10,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:48:10,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:48:10,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:10,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:48:10,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:48:10,566 INFO L87 Difference]: Start difference. First operand 20280 states and 25236 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:48:13,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:13,413 INFO L93 Difference]: Finished difference Result 56330 states and 70968 transitions. [2023-12-20 16:48:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:48:13,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2023-12-20 16:48:13,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:13,485 INFO L225 Difference]: With dead ends: 56330 [2023-12-20 16:48:13,486 INFO L226 Difference]: Without dead ends: 36802 [2023-12-20 16:48:13,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:48:13,515 INFO L413 NwaCegarLoop]: 1288 mSDtfsCounter, 750 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:13,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1295 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 16:48:13,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36802 states. [2023-12-20 16:48:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36802 to 36051. [2023-12-20 16:48:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36051 states, 36050 states have (on average 1.175367545076283) internal successors, (42372), 36050 states have internal predecessors, (42372), 0 states have call successors, (0), 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 16:48:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36051 states to 36051 states and 42372 transitions. [2023-12-20 16:48:14,028 INFO L78 Accepts]: Start accepts. Automaton has 36051 states and 42372 transitions. Word has length 253 [2023-12-20 16:48:14,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:14,028 INFO L495 AbstractCegarLoop]: Abstraction has 36051 states and 42372 transitions. [2023-12-20 16:48:14,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:48:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 36051 states and 42372 transitions. [2023-12-20 16:48:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-20 16:48:14,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:14,033 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:48:14,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 16:48:14,034 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:14,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:14,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1950915019, now seen corresponding path program 1 times [2023-12-20 16:48:14,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:14,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175312417] [2023-12-20 16:48:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:14,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-20 16:48:14,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:14,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175312417] [2023-12-20 16:48:14,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175312417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:48:14,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:48:14,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:48:14,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72603142] [2023-12-20 16:48:14,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:48:14,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:48:14,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:14,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:48:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:48:14,245 INFO L87 Difference]: Start difference. First operand 36051 states and 42372 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:48:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:17,177 INFO L93 Difference]: Finished difference Result 87121 states and 104490 transitions. [2023-12-20 16:48:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:48:17,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2023-12-20 16:48:17,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:17,285 INFO L225 Difference]: With dead ends: 87121 [2023-12-20 16:48:17,285 INFO L226 Difference]: Without dead ends: 51822 [2023-12-20 16:48:17,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:48:17,324 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:17,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 432 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [856 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 16:48:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51822 states. [2023-12-20 16:48:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51822 to 45814. [2023-12-20 16:48:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45814 states, 45813 states have (on average 1.16298867133783) internal successors, (53280), 45813 states have internal predecessors, (53280), 0 states have call successors, (0), 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 16:48:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45814 states to 45814 states and 53280 transitions. [2023-12-20 16:48:18,120 INFO L78 Accepts]: Start accepts. Automaton has 45814 states and 53280 transitions. Word has length 302 [2023-12-20 16:48:18,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:18,121 INFO L495 AbstractCegarLoop]: Abstraction has 45814 states and 53280 transitions. [2023-12-20 16:48:18,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:48:18,121 INFO L276 IsEmpty]: Start isEmpty. Operand 45814 states and 53280 transitions. [2023-12-20 16:48:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-20 16:48:18,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:18,129 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:48:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 16:48:18,129 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:18,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash -469620369, now seen corresponding path program 1 times [2023-12-20 16:48:18,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:18,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047583206] [2023-12-20 16:48:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:18,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 24 proven. 214 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-20 16:48:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047583206] [2023-12-20 16:48:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047583206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:48:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509857007] [2023-12-20 16:48:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:19,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:48:19,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:48:19,021 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 16:48:19,028 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 16:48:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:19,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 16:48:19,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:48:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-20 16:48:19,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:48:19,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509857007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:48:19,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:48:19,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 16:48:19,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476473712] [2023-12-20 16:48:19,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:48:19,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:48:19,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:19,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:48:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 16:48:19,232 INFO L87 Difference]: Start difference. First operand 45814 states and 53280 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 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 16:48:21,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:21,850 INFO L93 Difference]: Finished difference Result 90876 states and 105803 transitions. [2023-12-20 16:48:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:48:21,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 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 363 [2023-12-20 16:48:21,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:21,920 INFO L225 Difference]: With dead ends: 90876 [2023-12-20 16:48:21,921 INFO L226 Difference]: Without dead ends: 45814 [2023-12-20 16:48:21,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 16:48:21,957 INFO L413 NwaCegarLoop]: 1178 mSDtfsCounter, 792 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:21,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1185 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:48:22,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45814 states. [2023-12-20 16:48:22,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45814 to 41308. [2023-12-20 16:48:22,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41308 states, 41307 states have (on average 1.1062773863993995) internal successors, (45697), 41307 states have internal predecessors, (45697), 0 states have call successors, (0), 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 16:48:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41308 states to 41308 states and 45697 transitions. [2023-12-20 16:48:22,639 INFO L78 Accepts]: Start accepts. Automaton has 41308 states and 45697 transitions. Word has length 363 [2023-12-20 16:48:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:22,640 INFO L495 AbstractCegarLoop]: Abstraction has 41308 states and 45697 transitions. [2023-12-20 16:48:22,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 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 16:48:22,640 INFO L276 IsEmpty]: Start isEmpty. Operand 41308 states and 45697 transitions. [2023-12-20 16:48:22,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-12-20 16:48:22,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:22,652 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:48:22,662 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 16:48:22,861 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,SelfDestructingSolverStorable9 [2023-12-20 16:48:22,862 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:22,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:22,863 INFO L85 PathProgramCache]: Analyzing trace with hash -681757188, now seen corresponding path program 1 times [2023-12-20 16:48:22,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:22,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628918083] [2023-12-20 16:48:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:22,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-20 16:48:23,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:23,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628918083] [2023-12-20 16:48:23,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628918083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:48:23,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:48:23,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:48:23,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135345398] [2023-12-20 16:48:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:48:23,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:48:23,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:23,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:48:23,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:48:23,086 INFO L87 Difference]: Start difference. First operand 41308 states and 45697 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 16:48:25,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:25,670 INFO L93 Difference]: Finished difference Result 84117 states and 92970 transitions. [2023-12-20 16:48:25,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:48:25,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 401 [2023-12-20 16:48:25,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:25,712 INFO L225 Difference]: With dead ends: 84117 [2023-12-20 16:48:25,712 INFO L226 Difference]: Without dead ends: 43561 [2023-12-20 16:48:25,729 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 16:48:25,730 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:25,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1003 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:48:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43561 states. [2023-12-20 16:48:26,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43561 to 41308. [2023-12-20 16:48:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41308 states, 41307 states have (on average 1.0859418500496283) internal successors, (44857), 41307 states have internal predecessors, (44857), 0 states have call successors, (0), 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 16:48:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41308 states to 41308 states and 44857 transitions. [2023-12-20 16:48:26,236 INFO L78 Accepts]: Start accepts. Automaton has 41308 states and 44857 transitions. Word has length 401 [2023-12-20 16:48:26,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:26,236 INFO L495 AbstractCegarLoop]: Abstraction has 41308 states and 44857 transitions. [2023-12-20 16:48:26,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 16:48:26,237 INFO L276 IsEmpty]: Start isEmpty. Operand 41308 states and 44857 transitions. [2023-12-20 16:48:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-20 16:48:26,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:26,246 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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 16:48:26,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 16:48:26,246 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:26,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:26,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1572853287, now seen corresponding path program 1 times [2023-12-20 16:48:26,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:26,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544630507] [2023-12-20 16:48:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:26,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 16:48:26,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544630507] [2023-12-20 16:48:26,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544630507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:48:26,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:48:26,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:48:26,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708995489] [2023-12-20 16:48:26,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:48:26,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:48:26,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:26,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:48:26,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:48:26,679 INFO L87 Difference]: Start difference. First operand 41308 states and 44857 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 16:48:29,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:29,441 INFO L93 Difference]: Finished difference Result 89374 states and 96937 transitions. [2023-12-20 16:48:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:48:29,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 415 [2023-12-20 16:48:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:29,486 INFO L225 Difference]: With dead ends: 89374 [2023-12-20 16:48:29,486 INFO L226 Difference]: Without dead ends: 48818 [2023-12-20 16:48:29,507 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 16:48:29,508 INFO L413 NwaCegarLoop]: 1216 mSDtfsCounter, 655 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:29,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1222 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 16:48:29,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48818 states. [2023-12-20 16:48:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48818 to 46565. [2023-12-20 16:48:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46565 states, 46564 states have (on average 1.0794820032643244) internal successors, (50265), 46564 states have internal predecessors, (50265), 0 states have call successors, (0), 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 16:48:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46565 states to 46565 states and 50265 transitions. [2023-12-20 16:48:29,996 INFO L78 Accepts]: Start accepts. Automaton has 46565 states and 50265 transitions. Word has length 415 [2023-12-20 16:48:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:29,997 INFO L495 AbstractCegarLoop]: Abstraction has 46565 states and 50265 transitions. [2023-12-20 16:48:29,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 16:48:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 46565 states and 50265 transitions. [2023-12-20 16:48:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-12-20 16:48:30,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:30,005 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:48:30,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 16:48:30,005 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:30,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:30,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1841749597, now seen corresponding path program 1 times [2023-12-20 16:48:30,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:30,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140880184] [2023-12-20 16:48:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:30,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 76 proven. 257 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-20 16:48:30,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:30,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140880184] [2023-12-20 16:48:30,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140880184] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:48:30,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397200438] [2023-12-20 16:48:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:30,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:48:30,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:48:30,615 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 16:48:30,633 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 16:48:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:30,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 16:48:30,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:48:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-20 16:48:30,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:48:30,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397200438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:48:30,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:48:30,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 16:48:30,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473948659] [2023-12-20 16:48:30,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:48:30,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:48:30,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:48:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 16:48:30,916 INFO L87 Difference]: Start difference. First operand 46565 states and 50265 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 16:48:33,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:33,793 INFO L93 Difference]: Finished difference Result 125422 states and 136017 transitions. [2023-12-20 16:48:33,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:48:33,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 419 [2023-12-20 16:48:33,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:33,874 INFO L225 Difference]: With dead ends: 125422 [2023-12-20 16:48:33,874 INFO L226 Difference]: Without dead ends: 79609 [2023-12-20 16:48:33,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 418 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 16:48:33,909 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 611 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:33,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1319 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 16:48:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79609 states. [2023-12-20 16:48:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79609 to 69095. [2023-12-20 16:48:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69095 states, 69094 states have (on average 1.0670101600717863) internal successors, (73724), 69094 states have internal predecessors, (73724), 0 states have call successors, (0), 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 16:48:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69095 states to 69095 states and 73724 transitions. [2023-12-20 16:48:34,824 INFO L78 Accepts]: Start accepts. Automaton has 69095 states and 73724 transitions. Word has length 419 [2023-12-20 16:48:34,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:34,825 INFO L495 AbstractCegarLoop]: Abstraction has 69095 states and 73724 transitions. [2023-12-20 16:48:34,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 16:48:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 69095 states and 73724 transitions. [2023-12-20 16:48:34,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-20 16:48:34,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:34,835 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:48:34,840 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 16:48:35,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:48:35,041 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:35,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2105005077, now seen corresponding path program 1 times [2023-12-20 16:48:35,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:35,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433720986] [2023-12-20 16:48:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:35,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 555 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-20 16:48:35,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:35,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433720986] [2023-12-20 16:48:35,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433720986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:48:35,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:48:35,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:48:35,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000721940] [2023-12-20 16:48:35,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:48:35,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:48:35,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:48:35,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:48:35,574 INFO L87 Difference]: Start difference. First operand 69095 states and 73724 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 16:48:38,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:38,053 INFO L93 Difference]: Finished difference Result 159968 states and 171261 transitions. [2023-12-20 16:48:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:48:38,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 487 [2023-12-20 16:48:38,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:38,156 INFO L225 Difference]: With dead ends: 159968 [2023-12-20 16:48:38,156 INFO L226 Difference]: Without dead ends: 91625 [2023-12-20 16:48:38,340 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 16:48:38,341 INFO L413 NwaCegarLoop]: 1268 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:38,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1275 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 16:48:38,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91625 states. [2023-12-20 16:48:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91625 to 89372. [2023-12-20 16:48:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89372 states, 89371 states have (on average 1.0631748553781428) internal successors, (95017), 89371 states have internal predecessors, (95017), 0 states have call successors, (0), 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 16:48:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89372 states to 89372 states and 95017 transitions. [2023-12-20 16:48:39,419 INFO L78 Accepts]: Start accepts. Automaton has 89372 states and 95017 transitions. Word has length 487 [2023-12-20 16:48:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:39,419 INFO L495 AbstractCegarLoop]: Abstraction has 89372 states and 95017 transitions. [2023-12-20 16:48:39,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 16:48:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 89372 states and 95017 transitions. [2023-12-20 16:48:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-12-20 16:48:39,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:39,426 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 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 16:48:39,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 16:48:39,427 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:39,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:39,427 INFO L85 PathProgramCache]: Analyzing trace with hash -266794491, now seen corresponding path program 1 times [2023-12-20 16:48:39,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:39,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633579996] [2023-12-20 16:48:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:39,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-20 16:48:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:39,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633579996] [2023-12-20 16:48:39,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633579996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:48:39,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:48:39,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:48:39,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615507644] [2023-12-20 16:48:39,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:48:39,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:48:39,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:39,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:48:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:48:39,797 INFO L87 Difference]: Start difference. First operand 89372 states and 95017 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 16:48:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:48:42,719 INFO L93 Difference]: Finished difference Result 193763 states and 206426 transitions. [2023-12-20 16:48:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:48:42,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 504 [2023-12-20 16:48:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:48:42,854 INFO L225 Difference]: With dead ends: 193763 [2023-12-20 16:48:42,854 INFO L226 Difference]: Without dead ends: 105143 [2023-12-20 16:48:42,902 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 16:48:42,902 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 860 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:48:42,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1114 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:48:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105143 states. [2023-12-20 16:48:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105143 to 103641. [2023-12-20 16:48:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103641 states, 103640 states have (on average 1.0611250482439212) internal successors, (109975), 103640 states have internal predecessors, (109975), 0 states have call successors, (0), 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 16:48:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103641 states to 103641 states and 109975 transitions. [2023-12-20 16:48:44,257 INFO L78 Accepts]: Start accepts. Automaton has 103641 states and 109975 transitions. Word has length 504 [2023-12-20 16:48:44,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:48:44,258 INFO L495 AbstractCegarLoop]: Abstraction has 103641 states and 109975 transitions. [2023-12-20 16:48:44,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 16:48:44,258 INFO L276 IsEmpty]: Start isEmpty. Operand 103641 states and 109975 transitions. [2023-12-20 16:48:44,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-12-20 16:48:44,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:48:44,283 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2023-12-20 16:48:44,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 16:48:44,296 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:48:44,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:48:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash -263719344, now seen corresponding path program 1 times [2023-12-20 16:48:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:48:44,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213492080] [2023-12-20 16:48:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:48:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 811 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:48:46,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:48:46,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213492080] [2023-12-20 16:48:46,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213492080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:48:46,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196955638] [2023-12-20 16:48:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:48:46,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:48:46,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:48:46,607 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 16:48:46,610 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 16:48:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:48:46,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 16:48:46,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:48:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 730 proven. 116 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 16:48:48,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 16:48:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 729 proven. 117 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 16:48:50,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196955638] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 16:48:50,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 16:48:50,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2023-12-20 16:48:50,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086447483] [2023-12-20 16:48:50,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 16:48:50,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 16:48:50,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:48:50,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 16:48:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-12-20 16:48:50,101 INFO L87 Difference]: Start difference. First operand 103641 states and 109975 transitions. Second operand has 13 states, 13 states have (on average 117.76923076923077) internal successors, (1531), 13 states have internal predecessors, (1531), 0 states have call successors, (0), 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 16:49:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:49:24,998 INFO L93 Difference]: Finished difference Result 359848 states and 383152 transitions. [2023-12-20 16:49:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-20 16:49:24,999 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 117.76923076923077) internal successors, (1531), 13 states have internal predecessors, (1531), 0 states have call successors, (0), 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 659 [2023-12-20 16:49:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:49:25,564 INFO L225 Difference]: With dead ends: 359848 [2023-12-20 16:49:25,564 INFO L226 Difference]: Without dead ends: 253849 [2023-12-20 16:49:25,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1389 GetRequests, 1343 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 16:49:25,625 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 30441 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 43487 mSolverCounterSat, 9393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30441 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 52880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9393 IncrementalHoareTripleChecker+Valid, 43487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2023-12-20 16:49:25,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30441 Valid, 331 Invalid, 52880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9393 Valid, 43487 Invalid, 0 Unknown, 0 Unchecked, 32.2s Time] [2023-12-20 16:49:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253849 states. [2023-12-20 16:49:28,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253849 to 224552. [2023-12-20 16:49:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224552 states, 224551 states have (on average 1.0466486455192807) internal successors, (235026), 224551 states have internal predecessors, (235026), 0 states have call successors, (0), 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 16:49:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224552 states to 224552 states and 235026 transitions. [2023-12-20 16:49:29,252 INFO L78 Accepts]: Start accepts. Automaton has 224552 states and 235026 transitions. Word has length 659 [2023-12-20 16:49:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:49:29,253 INFO L495 AbstractCegarLoop]: Abstraction has 224552 states and 235026 transitions. [2023-12-20 16:49:29,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 117.76923076923077) internal successors, (1531), 13 states have internal predecessors, (1531), 0 states have call successors, (0), 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 16:49:29,264 INFO L276 IsEmpty]: Start isEmpty. Operand 224552 states and 235026 transitions. [2023-12-20 16:49:29,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2023-12-20 16:49:29,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:49:29,296 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:49:29,304 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 16:49:29,505 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,SelfDestructingSolverStorable15 [2023-12-20 16:49:29,506 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:49:29,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:49:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash 242603964, now seen corresponding path program 1 times [2023-12-20 16:49:29,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:49:29,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542013307] [2023-12-20 16:49:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:49:29,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:49:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:49:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-20 16:49:32,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:49:32,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542013307] [2023-12-20 16:49:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542013307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:49:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:49:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:49:32,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677090326] [2023-12-20 16:49:32,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:49:32,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:49:32,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:49:32,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:49:32,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:49:32,048 INFO L87 Difference]: Start difference. First operand 224552 states and 235026 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 16:49:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:49:35,602 INFO L93 Difference]: Finished difference Result 473886 states and 496009 transitions. [2023-12-20 16:49:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:49:35,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 754 [2023-12-20 16:49:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:49:36,178 INFO L225 Difference]: With dead ends: 473886 [2023-12-20 16:49:36,178 INFO L226 Difference]: Without dead ends: 249335 [2023-12-20 16:49:36,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 16:49:36,277 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 641 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:49:36,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 129 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:49:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249335 states. [2023-12-20 16:49:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249335 to 242576. [2023-12-20 16:49:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242576 states, 242575 states have (on average 1.0439699062145729) internal successors, (253241), 242575 states have internal predecessors, (253241), 0 states have call successors, (0), 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 16:49:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242576 states to 242576 states and 253241 transitions. [2023-12-20 16:49:39,519 INFO L78 Accepts]: Start accepts. Automaton has 242576 states and 253241 transitions. Word has length 754 [2023-12-20 16:49:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:49:39,519 INFO L495 AbstractCegarLoop]: Abstraction has 242576 states and 253241 transitions. [2023-12-20 16:49:39,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 16:49:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 242576 states and 253241 transitions. [2023-12-20 16:49:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2023-12-20 16:49:39,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:49:39,822 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:49:39,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 16:49:39,823 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:49:39,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:49:39,823 INFO L85 PathProgramCache]: Analyzing trace with hash -765095155, now seen corresponding path program 1 times [2023-12-20 16:49:39,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:49:39,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012552650] [2023-12-20 16:49:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:49:39,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:49:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:49:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 814 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-20 16:49:41,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:49:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012552650] [2023-12-20 16:49:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012552650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:49:41,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:49:41,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:49:41,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141067117] [2023-12-20 16:49:41,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:49:41,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:49:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:49:41,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:49:41,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:49:41,518 INFO L87 Difference]: Start difference. First operand 242576 states and 253241 transitions. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 16:49:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:49:45,296 INFO L93 Difference]: Finished difference Result 492661 states and 514254 transitions. [2023-12-20 16:49:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:49:45,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 779 [2023-12-20 16:49:45,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:49:45,684 INFO L225 Difference]: With dead ends: 492661 [2023-12-20 16:49:45,684 INFO L226 Difference]: Without dead ends: 250086 [2023-12-20 16:49:45,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 16:49:45,805 INFO L413 NwaCegarLoop]: 1313 mSDtfsCounter, 482 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 16:49:45,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1320 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 16:49:45,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250086 states. [2023-12-20 16:49:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250086 to 244078. [2023-12-20 16:49:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244078 states, 244077 states have (on average 1.0437771686803754) internal successors, (254762), 244077 states have internal predecessors, (254762), 0 states have call successors, (0), 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 16:49:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244078 states to 244078 states and 254762 transitions. [2023-12-20 16:49:49,481 INFO L78 Accepts]: Start accepts. Automaton has 244078 states and 254762 transitions. Word has length 779 [2023-12-20 16:49:49,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:49:49,481 INFO L495 AbstractCegarLoop]: Abstraction has 244078 states and 254762 transitions. [2023-12-20 16:49:49,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 16:49:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 244078 states and 254762 transitions. [2023-12-20 16:49:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2023-12-20 16:49:49,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:49:49,529 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:49:49,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 16:49:49,530 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:49:49,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:49:49,530 INFO L85 PathProgramCache]: Analyzing trace with hash 530843642, now seen corresponding path program 1 times [2023-12-20 16:49:49,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:49:49,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372712691] [2023-12-20 16:49:49,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:49:49,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:49:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:49:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 1077 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-12-20 16:49:50,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:49:50,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372712691] [2023-12-20 16:49:50,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372712691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:49:50,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:49:50,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:49:50,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16930379] [2023-12-20 16:49:50,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:49:50,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:49:50,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:49:50,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:49:50,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:49:50,207 INFO L87 Difference]: Start difference. First operand 244078 states and 254762 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 16:49:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:49:53,512 INFO L93 Difference]: Finished difference Result 476139 states and 496675 transitions. [2023-12-20 16:49:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:49:53,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 848 [2023-12-20 16:49:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:49:53,859 INFO L225 Difference]: With dead ends: 476139 [2023-12-20 16:49:53,859 INFO L226 Difference]: Without dead ends: 222299 [2023-12-20 16:49:53,996 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 16:49:53,996 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 731 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 16:49:53,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1318 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 16:49:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222299 states. [2023-12-20 16:49:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222299 to 198267. [2023-12-20 16:49:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198267 states, 198266 states have (on average 1.0365468612873614) internal successors, (205512), 198266 states have internal predecessors, (205512), 0 states have call successors, (0), 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 16:49:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198267 states to 198267 states and 205512 transitions. [2023-12-20 16:49:57,044 INFO L78 Accepts]: Start accepts. Automaton has 198267 states and 205512 transitions. Word has length 848 [2023-12-20 16:49:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:49:57,045 INFO L495 AbstractCegarLoop]: Abstraction has 198267 states and 205512 transitions. [2023-12-20 16:49:57,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 16:49:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 198267 states and 205512 transitions. [2023-12-20 16:49:57,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2023-12-20 16:49:57,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:49:57,089 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:49:57,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 16:49:57,089 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:49:57,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:49:57,090 INFO L85 PathProgramCache]: Analyzing trace with hash -435838870, now seen corresponding path program 1 times [2023-12-20 16:49:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:49:57,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056126222] [2023-12-20 16:49:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:49:57,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:49:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:49:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 971 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-20 16:49:57,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:49:57,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056126222] [2023-12-20 16:49:57,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056126222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:49:57,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:49:57,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:49:57,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702079217] [2023-12-20 16:49:57,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:49:57,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:49:57,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:49:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:49:57,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:49:57,455 INFO L87 Difference]: Start difference. First operand 198267 states and 205512 transitions. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 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 16:50:00,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:50:00,902 INFO L93 Difference]: Finished difference Result 396533 states and 411002 transitions. [2023-12-20 16:50:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:50:00,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 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 854 [2023-12-20 16:50:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:50:01,352 INFO L225 Difference]: With dead ends: 396533 [2023-12-20 16:50:01,352 INFO L226 Difference]: Without dead ends: 199018 [2023-12-20 16:50:01,513 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 16:50:01,514 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 757 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 16:50:01,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 215 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 16:50:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199018 states. [2023-12-20 16:50:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199018 to 193761. [2023-12-20 16:50:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193761 states, 193760 states have (on average 1.0292113955408753) internal successors, (199420), 193760 states have internal predecessors, (199420), 0 states have call successors, (0), 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 16:50:04,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193761 states to 193761 states and 199420 transitions. [2023-12-20 16:50:04,220 INFO L78 Accepts]: Start accepts. Automaton has 193761 states and 199420 transitions. Word has length 854 [2023-12-20 16:50:04,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:50:04,220 INFO L495 AbstractCegarLoop]: Abstraction has 193761 states and 199420 transitions. [2023-12-20 16:50:04,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 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 16:50:04,220 INFO L276 IsEmpty]: Start isEmpty. Operand 193761 states and 199420 transitions. [2023-12-20 16:50:04,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2023-12-20 16:50:04,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:50:04,252 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:04,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 16:50:04,253 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:50:04,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:50:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash 217724503, now seen corresponding path program 1 times [2023-12-20 16:50:04,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:50:04,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255568285] [2023-12-20 16:50:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:50:04,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:50:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:50:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-20 16:50:05,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:50:05,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255568285] [2023-12-20 16:50:05,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255568285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:50:05,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:50:05,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:50:05,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84831555] [2023-12-20 16:50:05,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:50:05,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:50:05,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:50:05,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:50:05,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:50:05,056 INFO L87 Difference]: Start difference. First operand 193761 states and 199420 transitions. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 16:50:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:50:09,144 INFO L93 Difference]: Finished difference Result 431079 states and 443820 transitions. [2023-12-20 16:50:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:50:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 879 [2023-12-20 16:50:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:50:09,571 INFO L225 Difference]: With dead ends: 431079 [2023-12-20 16:50:09,571 INFO L226 Difference]: Without dead ends: 238070 [2023-12-20 16:50:09,676 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 16:50:09,677 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 612 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:50:09,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 336 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 16:50:09,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238070 states. [2023-12-20 16:50:12,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238070 to 223801. [2023-12-20 16:50:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223801 states, 223800 states have (on average 1.028994638069705) internal successors, (230289), 223800 states have internal predecessors, (230289), 0 states have call successors, (0), 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 16:50:12,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223801 states to 223801 states and 230289 transitions. [2023-12-20 16:50:12,624 INFO L78 Accepts]: Start accepts. Automaton has 223801 states and 230289 transitions. Word has length 879 [2023-12-20 16:50:12,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:50:12,624 INFO L495 AbstractCegarLoop]: Abstraction has 223801 states and 230289 transitions. [2023-12-20 16:50:12,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 16:50:12,624 INFO L276 IsEmpty]: Start isEmpty. Operand 223801 states and 230289 transitions. [2023-12-20 16:50:12,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 925 [2023-12-20 16:50:12,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:50:12,666 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:12,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 16:50:12,666 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:50:12,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:50:12,667 INFO L85 PathProgramCache]: Analyzing trace with hash 432383999, now seen corresponding path program 1 times [2023-12-20 16:50:12,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:50:12,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550961362] [2023-12-20 16:50:12,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:50:12,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:50:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:50:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2023-12-20 16:50:13,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:50:13,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550961362] [2023-12-20 16:50:13,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550961362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:50:13,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:50:13,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:50:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409853561] [2023-12-20 16:50:13,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:50:13,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:50:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:50:13,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:50:13,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:50:13,848 INFO L87 Difference]: Start difference. First operand 223801 states and 230289 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 16:50:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:50:16,993 INFO L93 Difference]: Finished difference Result 443846 states and 456738 transitions. [2023-12-20 16:50:16,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:50:16,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 924 [2023-12-20 16:50:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:50:17,322 INFO L225 Difference]: With dead ends: 443846 [2023-12-20 16:50:17,322 INFO L226 Difference]: Without dead ends: 220797 [2023-12-20 16:50:17,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 16:50:17,448 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 709 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 16:50:17,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 138 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 16:50:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220797 states. [2023-12-20 16:50:19,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220797 to 208781. [2023-12-20 16:50:19,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208781 states, 208780 states have (on average 1.0246527445157583) internal successors, (213927), 208780 states have internal predecessors, (213927), 0 states have call successors, (0), 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 16:50:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208781 states to 208781 states and 213927 transitions. [2023-12-20 16:50:20,156 INFO L78 Accepts]: Start accepts. Automaton has 208781 states and 213927 transitions. Word has length 924 [2023-12-20 16:50:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:50:20,157 INFO L495 AbstractCegarLoop]: Abstraction has 208781 states and 213927 transitions. [2023-12-20 16:50:20,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 16:50:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand 208781 states and 213927 transitions. [2023-12-20 16:50:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2023-12-20 16:50:20,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:50:20,199 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:50:20,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 16:50:20,199 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:50:20,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:50:20,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1115232283, now seen corresponding path program 1 times [2023-12-20 16:50:20,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:50:20,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537646687] [2023-12-20 16:50:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:50:20,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:50:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:50:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-20 16:50:21,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:50:21,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537646687] [2023-12-20 16:50:21,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537646687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:50:21,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:50:21,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:50:21,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645556779] [2023-12-20 16:50:21,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:50:21,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:50:21,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:50:21,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:50:21,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:50:21,223 INFO L87 Difference]: Start difference. First operand 208781 states and 213927 transitions. Second operand has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 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 16:50:24,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:50:24,738 INFO L93 Difference]: Finished difference Result 439340 states and 450087 transitions. [2023-12-20 16:50:24,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:50:24,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 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 991 [2023-12-20 16:50:24,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:50:25,065 INFO L225 Difference]: With dead ends: 439340 [2023-12-20 16:50:25,066 INFO L226 Difference]: Without dead ends: 231311 [2023-12-20 16:50:25,195 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 16:50:25,195 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 602 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:50:25,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 334 Invalid, 2774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 16:50:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231311 states. [2023-12-20 16:50:27,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231311 to 207279. [2023-12-20 16:50:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207279 states, 207278 states have (on average 1.0246335838825154) internal successors, (212384), 207278 states have internal predecessors, (212384), 0 states have call successors, (0), 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 16:50:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207279 states to 207279 states and 212384 transitions. [2023-12-20 16:50:28,023 INFO L78 Accepts]: Start accepts. Automaton has 207279 states and 212384 transitions. Word has length 991 [2023-12-20 16:50:28,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:50:28,023 INFO L495 AbstractCegarLoop]: Abstraction has 207279 states and 212384 transitions. [2023-12-20 16:50:28,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 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 16:50:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand 207279 states and 212384 transitions. [2023-12-20 16:50:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2023-12-20 16:50:28,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:50:28,069 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:50:28,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 16:50:28,069 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:50:28,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:50:28,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1228491798, now seen corresponding path program 1 times [2023-12-20 16:50:28,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:50:28,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162239234] [2023-12-20 16:50:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:50:28,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:50:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:50:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 1050 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-20 16:50:28,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:50:28,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162239234] [2023-12-20 16:50:28,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162239234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:50:28,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:50:28,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:50:28,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354230438] [2023-12-20 16:50:28,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:50:28,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:50:28,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:50:28,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:50:28,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:50:28,984 INFO L87 Difference]: Start difference. First operand 207279 states and 212384 transitions. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 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 16:50:32,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:50:32,968 INFO L93 Difference]: Finished difference Result 439340 states and 450344 transitions. [2023-12-20 16:50:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:50:32,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 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 993 [2023-12-20 16:50:32,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:50:33,533 INFO L225 Difference]: With dead ends: 439340 [2023-12-20 16:50:33,533 INFO L226 Difference]: Without dead ends: 232813 [2023-12-20 16:50:33,664 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 16:50:33,665 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 428 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:50:33,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1208 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 16:50:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232813 states. [2023-12-20 16:50:36,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232813 to 231311. [2023-12-20 16:50:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231311 states, 231310 states have (on average 1.0236263023647918) internal successors, (236775), 231310 states have internal predecessors, (236775), 0 states have call successors, (0), 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 16:50:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231311 states to 231311 states and 236775 transitions. [2023-12-20 16:50:37,001 INFO L78 Accepts]: Start accepts. Automaton has 231311 states and 236775 transitions. Word has length 993 [2023-12-20 16:50:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:50:37,002 INFO L495 AbstractCegarLoop]: Abstraction has 231311 states and 236775 transitions. [2023-12-20 16:50:37,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 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 16:50:37,002 INFO L276 IsEmpty]: Start isEmpty. Operand 231311 states and 236775 transitions. [2023-12-20 16:50:37,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2023-12-20 16:50:37,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:50:37,063 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:37,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 16:50:37,064 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:50:37,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:50:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash 352968140, now seen corresponding path program 1 times [2023-12-20 16:50:37,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:50:37,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083907197] [2023-12-20 16:50:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:50:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:50:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:50:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 1295 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-20 16:50:38,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:50:38,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083907197] [2023-12-20 16:50:38,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083907197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:50:38,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:50:38,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:50:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429070376] [2023-12-20 16:50:38,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:50:38,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:50:38,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:50:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:50:38,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:50:38,016 INFO L87 Difference]: Start difference. First operand 231311 states and 236775 transitions. Second operand has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 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 16:50:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:50:41,745 INFO L93 Difference]: Finished difference Result 497918 states and 509939 transitions. [2023-12-20 16:50:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:50:41,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 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 1077 [2023-12-20 16:50:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:50:42,168 INFO L225 Difference]: With dead ends: 497918 [2023-12-20 16:50:42,168 INFO L226 Difference]: Without dead ends: 267359 [2023-12-20 16:50:42,311 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 16:50:42,312 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 441 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:50:42,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1155 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:50:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267359 states. [2023-12-20 16:50:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267359 to 238821. [2023-12-20 16:50:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238821 states, 238820 states have (on average 1.0225567372916842) internal successors, (244207), 238820 states have internal predecessors, (244207), 0 states have call successors, (0), 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 16:50:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238821 states to 238821 states and 244207 transitions. [2023-12-20 16:50:45,641 INFO L78 Accepts]: Start accepts. Automaton has 238821 states and 244207 transitions. Word has length 1077 [2023-12-20 16:50:45,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:50:45,641 INFO L495 AbstractCegarLoop]: Abstraction has 238821 states and 244207 transitions. [2023-12-20 16:50:45,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 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 16:50:45,641 INFO L276 IsEmpty]: Start isEmpty. Operand 238821 states and 244207 transitions. [2023-12-20 16:50:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2023-12-20 16:50:45,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:50:45,706 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:45,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 16:50:45,706 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:50:45,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:50:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash 900865243, now seen corresponding path program 1 times [2023-12-20 16:50:45,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:50:45,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550558737] [2023-12-20 16:50:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:50:45,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:50:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:50:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2023-12-20 16:50:46,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:50:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550558737] [2023-12-20 16:50:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550558737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:50:46,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:50:46,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:50:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520745684] [2023-12-20 16:50:46,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:50:46,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:50:46,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:50:46,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:50:46,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:50:46,895 INFO L87 Difference]: Start difference. First operand 238821 states and 244207 transitions. Second operand has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 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 16:50:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:50:50,340 INFO L93 Difference]: Finished difference Result 501673 states and 512912 transitions. [2023-12-20 16:50:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:50:50,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 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 1083 [2023-12-20 16:50:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:50:50,706 INFO L225 Difference]: With dead ends: 501673 [2023-12-20 16:50:50,706 INFO L226 Difference]: Without dead ends: 262853 [2023-12-20 16:50:51,170 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 16:50:51,171 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 583 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 16:50:51,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 503 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 16:50:51,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262853 states. [2023-12-20 16:50:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262853 to 253090. [2023-12-20 16:50:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253090 states, 253089 states have (on average 1.0207002279830415) internal successors, (258328), 253089 states have internal predecessors, (258328), 0 states have call successors, (0), 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 16:50:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253090 states to 253090 states and 258328 transitions. [2023-12-20 16:50:54,340 INFO L78 Accepts]: Start accepts. Automaton has 253090 states and 258328 transitions. Word has length 1083 [2023-12-20 16:50:54,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:50:54,341 INFO L495 AbstractCegarLoop]: Abstraction has 253090 states and 258328 transitions. [2023-12-20 16:50:54,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 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 16:50:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 253090 states and 258328 transitions. [2023-12-20 16:50:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2023-12-20 16:50:54,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:50:54,408 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:54,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 16:50:54,409 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:50:54,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:50:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash -758143047, now seen corresponding path program 1 times [2023-12-20 16:50:54,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:50:54,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950238060] [2023-12-20 16:50:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:50:54,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:50:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:50:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 773 proven. 54 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-12-20 16:50:56,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:50:56,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950238060] [2023-12-20 16:50:56,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950238060] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:50:56,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313857095] [2023-12-20 16:50:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:50:56,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:50:56,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:50:56,380 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 16:50:56,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 16:50:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:50:56,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 16:50:56,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:51:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 773 proven. 54 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-12-20 16:51:05,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 16:51:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 773 proven. 54 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-12-20 16:51:11,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313857095] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 16:51:11,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 16:51:11,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-12-20 16:51:11,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642939397] [2023-12-20 16:51:11,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 16:51:11,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 16:51:11,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:51:11,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 16:51:11,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-20 16:51:11,735 INFO L87 Difference]: Start difference. First operand 253090 states and 258328 transitions. Second operand has 11 states, 11 states have (on average 220.0909090909091) internal successors, (2421), 10 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)