/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.miim.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:38:27,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:38:27,419 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:38:27,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:38:27,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:38:27,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:38:27,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:38:27,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:38:27,449 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:38:27,454 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:38:27,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:38:27,455 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:38:27,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:38:27,456 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:38:27,456 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:38:27,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:38:27,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:38:27,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:38:27,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:38:27,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:38:27,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:38:27,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:38:27,459 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:38:27,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:38:27,459 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:38:27,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:38:27,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:38:27,460 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:38:27,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:38:27,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:38:27,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:38:27,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:38:27,461 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:38:27,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:38:27,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:38:27,462 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:38:27,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:38:27,462 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:38:27,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:38:27,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:38:27,462 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:38:27,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:38:27,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:38:27,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:38:27,685 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:38:27,685 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:38:27,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.miim.c [2023-12-16 19:38:28,782 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:38:28,985 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:38:28,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.miim.c [2023-12-16 19:38:28,994 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5743608a8/d82ca0365e3d4ce2bf7b557440bd066e/FLAG630cc7840 [2023-12-16 19:38:29,004 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5743608a8/d82ca0365e3d4ce2bf7b557440bd066e [2023-12-16 19:38:29,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:38:29,010 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:38:29,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:38:29,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:38:29,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:38:29,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386cbc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29, skipping insertion in model container [2023-12-16 19:38:29,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,072 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:38:29,175 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.miim.c[1244,1257] [2023-12-16 19:38:29,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:38:29,377 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:38:29,388 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.miim.c[1244,1257] [2023-12-16 19:38:29,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:38:29,511 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:38:29,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29 WrapperNode [2023-12-16 19:38:29,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:38:29,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:38:29,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:38:29,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:38:29,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,675 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1876 [2023-12-16 19:38:29,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:38:29,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:38:29,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:38:29,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:38:29,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,707 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,763 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-12-16 19:38:29,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:38:29,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:38:29,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:38:29,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:38:29,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (1/1) ... [2023-12-16 19:38:29,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:38:29,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:38:29,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 19:38:29,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 19:38:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:38:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:38:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 19:38:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:38:29,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:38:30,174 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:38:30,176 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:38:31,447 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:38:31,481 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:38:31,481 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:38:31,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:38:31 BoogieIcfgContainer [2023-12-16 19:38:31,482 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:38:31,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:38:31,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:38:31,486 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:38:31,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:38:29" (1/3) ... [2023-12-16 19:38:31,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c553a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:38:31, skipping insertion in model container [2023-12-16 19:38:31,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:38:29" (2/3) ... [2023-12-16 19:38:31,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c553a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:38:31, skipping insertion in model container [2023-12-16 19:38:31,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:38:31" (3/3) ... [2023-12-16 19:38:31,487 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.miim.c [2023-12-16 19:38:31,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:38:31,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:38:31,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:38:31,535 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;@35899080, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:38:31,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:38:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.6666666666666667) internal successors, (405), 244 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 19:38:31,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:31,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:31,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:31,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1847360794, now seen corresponding path program 1 times [2023-12-16 19:38:31,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:31,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921004681] [2023-12-16 19:38:31,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:31,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:32,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921004681] [2023-12-16 19:38:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921004681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:32,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:32,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:32,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286000015] [2023-12-16 19:38:32,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:32,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:38:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:32,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:38:32,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:38:32,177 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.6666666666666667) internal successors, (405), 244 states have internal predecessors, (405), 0 states have call successors, (0), 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 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:32,266 INFO L93 Difference]: Finished difference Result 417 states and 691 transitions. [2023-12-16 19:38:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:38:32,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-16 19:38:32,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:32,281 INFO L225 Difference]: With dead ends: 417 [2023-12-16 19:38:32,281 INFO L226 Difference]: Without dead ends: 245 [2023-12-16 19:38:32,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:38:32,287 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:32,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1189 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:38:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-16 19:38:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-12-16 19:38:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.651639344262295) internal successors, (403), 244 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 403 transitions. [2023-12-16 19:38:32,337 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 403 transitions. Word has length 74 [2023-12-16 19:38:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:32,338 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 403 transitions. [2023-12-16 19:38:32,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 403 transitions. [2023-12-16 19:38:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 19:38:32,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:32,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:32,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:38:32,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:32,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:32,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1431884398, now seen corresponding path program 1 times [2023-12-16 19:38:32,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:32,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504646973] [2023-12-16 19:38:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:32,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:32,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:32,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504646973] [2023-12-16 19:38:32,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504646973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:32,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:32,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:32,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716861074] [2023-12-16 19:38:32,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:32,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:38:32,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:32,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:38:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:38:32,585 INFO L87 Difference]: Start difference. First operand 245 states and 403 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:32,613 INFO L93 Difference]: Finished difference Result 420 states and 689 transitions. [2023-12-16 19:38:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:38:32,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-16 19:38:32,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:32,616 INFO L225 Difference]: With dead ends: 420 [2023-12-16 19:38:32,617 INFO L226 Difference]: Without dead ends: 248 [2023-12-16 19:38:32,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:38:32,620 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:32,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1187 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:38:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-16 19:38:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2023-12-16 19:38:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.646341463414634) internal successors, (405), 246 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:32,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 405 transitions. [2023-12-16 19:38:32,638 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 405 transitions. Word has length 75 [2023-12-16 19:38:32,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:32,639 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 405 transitions. [2023-12-16 19:38:32,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:32,639 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 405 transitions. [2023-12-16 19:38:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 19:38:32,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:32,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:32,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:38:32,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:32,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:32,641 INFO L85 PathProgramCache]: Analyzing trace with hash 125831938, now seen corresponding path program 1 times [2023-12-16 19:38:32,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:32,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238776631] [2023-12-16 19:38:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:32,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:33,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:33,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238776631] [2023-12-16 19:38:33,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238776631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:33,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:33,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:33,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488321435] [2023-12-16 19:38:33,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:33,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:38:33,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:33,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:38:33,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:38:33,110 INFO L87 Difference]: Start difference. First operand 247 states and 405 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:33,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:33,155 INFO L93 Difference]: Finished difference Result 446 states and 730 transitions. [2023-12-16 19:38:33,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:38:33,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-16 19:38:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:33,156 INFO L225 Difference]: With dead ends: 446 [2023-12-16 19:38:33,157 INFO L226 Difference]: Without dead ends: 272 [2023-12-16 19:38:33,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:38:33,161 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 545 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:33,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 725 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:38:33,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-16 19:38:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 247. [2023-12-16 19:38:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.6422764227642277) internal successors, (404), 246 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) [2023-12-16 19:38:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 404 transitions. [2023-12-16 19:38:33,209 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 404 transitions. Word has length 76 [2023-12-16 19:38:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:33,209 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 404 transitions. [2023-12-16 19:38:33,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 404 transitions. [2023-12-16 19:38:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 19:38:33,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:33,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:33,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:38:33,211 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:33,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:33,211 INFO L85 PathProgramCache]: Analyzing trace with hash -504883334, now seen corresponding path program 1 times [2023-12-16 19:38:33,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:33,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311728238] [2023-12-16 19:38:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:33,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:33,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:33,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311728238] [2023-12-16 19:38:33,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311728238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:33,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:33,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:38:33,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020787850] [2023-12-16 19:38:33,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:33,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 19:38:33,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:33,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 19:38:33,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:38:33,832 INFO L87 Difference]: Start difference. First operand 247 states and 404 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:34,152 INFO L93 Difference]: Finished difference Result 823 states and 1341 transitions. [2023-12-16 19:38:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 19:38:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-16 19:38:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:34,169 INFO L225 Difference]: With dead ends: 823 [2023-12-16 19:38:34,169 INFO L226 Difference]: Without dead ends: 649 [2023-12-16 19:38:34,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:38:34,174 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 2255 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2255 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:34,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2255 Valid, 2534 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:38:34,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-16 19:38:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 270. [2023-12-16 19:38:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.6356877323420074) internal successors, (440), 269 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 440 transitions. [2023-12-16 19:38:34,182 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 440 transitions. Word has length 77 [2023-12-16 19:38:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:34,183 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 440 transitions. [2023-12-16 19:38:34,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 440 transitions. [2023-12-16 19:38:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 19:38:34,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:34,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:34,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:38:34,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:34,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:34,188 INFO L85 PathProgramCache]: Analyzing trace with hash -897910344, now seen corresponding path program 1 times [2023-12-16 19:38:34,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:34,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884340046] [2023-12-16 19:38:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:34,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:34,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:34,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884340046] [2023-12-16 19:38:34,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884340046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:34,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:34,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:38:34,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445435653] [2023-12-16 19:38:34,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:34,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:38:34,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:38:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:38:34,914 INFO L87 Difference]: Start difference. First operand 270 states and 440 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:34,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:34,997 INFO L93 Difference]: Finished difference Result 676 states and 1094 transitions. [2023-12-16 19:38:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:38:34,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-16 19:38:34,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:35,001 INFO L225 Difference]: With dead ends: 676 [2023-12-16 19:38:35,001 INFO L226 Difference]: Without dead ends: 479 [2023-12-16 19:38:35,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:38:35,003 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 861 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:35,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1279 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:38:35,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-12-16 19:38:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 276. [2023-12-16 19:38:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.6218181818181818) internal successors, (446), 275 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:35,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 446 transitions. [2023-12-16 19:38:35,011 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 446 transitions. Word has length 77 [2023-12-16 19:38:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:35,011 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 446 transitions. [2023-12-16 19:38:35,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 446 transitions. [2023-12-16 19:38:35,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 19:38:35,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:35,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:35,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 19:38:35,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:35,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:35,020 INFO L85 PathProgramCache]: Analyzing trace with hash 936656090, now seen corresponding path program 1 times [2023-12-16 19:38:35,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:35,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279346618] [2023-12-16 19:38:35,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:35,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:35,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:35,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279346618] [2023-12-16 19:38:35,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279346618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:35,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:35,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:38:35,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304965766] [2023-12-16 19:38:35,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:35,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:38:35,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:35,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:38:35,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:38:35,217 INFO L87 Difference]: Start difference. First operand 276 states and 446 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:35,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:35,769 INFO L93 Difference]: Finished difference Result 718 states and 1154 transitions. [2023-12-16 19:38:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:38:35,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-16 19:38:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:35,772 INFO L225 Difference]: With dead ends: 718 [2023-12-16 19:38:35,772 INFO L226 Difference]: Without dead ends: 515 [2023-12-16 19:38:35,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-16 19:38:35,773 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1214 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:35,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 1270 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 19:38:35,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-12-16 19:38:35,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 316. [2023-12-16 19:38:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.6126984126984127) internal successors, (508), 315 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 508 transitions. [2023-12-16 19:38:35,779 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 508 transitions. Word has length 78 [2023-12-16 19:38:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:35,779 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 508 transitions. [2023-12-16 19:38:35,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 508 transitions. [2023-12-16 19:38:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 19:38:35,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:35,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:35,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 19:38:35,782 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:35,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1057179718, now seen corresponding path program 1 times [2023-12-16 19:38:35,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:35,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175934418] [2023-12-16 19:38:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:35,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:35,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175934418] [2023-12-16 19:38:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175934418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:35,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:35,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:35,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183618322] [2023-12-16 19:38:35,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:35,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:38:35,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:35,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:38:35,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:38:35,994 INFO L87 Difference]: Start difference. First operand 316 states and 508 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:36,089 INFO L93 Difference]: Finished difference Result 677 states and 1086 transitions. [2023-12-16 19:38:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:38:36,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-16 19:38:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:36,091 INFO L225 Difference]: With dead ends: 677 [2023-12-16 19:38:36,091 INFO L226 Difference]: Without dead ends: 456 [2023-12-16 19:38:36,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:38:36,092 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 900 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:36,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1157 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:38:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-16 19:38:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 298. [2023-12-16 19:38:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.612794612794613) internal successors, (479), 297 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 479 transitions. [2023-12-16 19:38:36,098 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 479 transitions. Word has length 78 [2023-12-16 19:38:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:36,098 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 479 transitions. [2023-12-16 19:38:36,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 479 transitions. [2023-12-16 19:38:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 19:38:36,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:36,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:36,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 19:38:36,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:36,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1712430878, now seen corresponding path program 1 times [2023-12-16 19:38:36,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:36,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847017396] [2023-12-16 19:38:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:36,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:36,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:36,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847017396] [2023-12-16 19:38:36,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847017396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:36,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:36,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 19:38:36,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606411748] [2023-12-16 19:38:36,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:36,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 19:38:36,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 19:38:36,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:38:36,344 INFO L87 Difference]: Start difference. First operand 298 states and 479 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:37,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:37,235 INFO L93 Difference]: Finished difference Result 868 states and 1392 transitions. [2023-12-16 19:38:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 19:38:37,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-16 19:38:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:37,238 INFO L225 Difference]: With dead ends: 868 [2023-12-16 19:38:37,238 INFO L226 Difference]: Without dead ends: 660 [2023-12-16 19:38:37,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-12-16 19:38:37,239 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 2215 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:37,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2215 Valid, 1754 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 19:38:37,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-16 19:38:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 300. [2023-12-16 19:38:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.605351170568562) internal successors, (480), 299 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 480 transitions. [2023-12-16 19:38:37,245 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 480 transitions. Word has length 79 [2023-12-16 19:38:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:37,245 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 480 transitions. [2023-12-16 19:38:37,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 480 transitions. [2023-12-16 19:38:37,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 19:38:37,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:37,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:37,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 19:38:37,247 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:37,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:37,247 INFO L85 PathProgramCache]: Analyzing trace with hash 770697844, now seen corresponding path program 1 times [2023-12-16 19:38:37,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:37,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297098042] [2023-12-16 19:38:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:37,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:37,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:37,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297098042] [2023-12-16 19:38:37,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297098042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:37,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:37,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:38:37,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656843957] [2023-12-16 19:38:37,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:37,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:38:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:37,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:38:37,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:38:37,519 INFO L87 Difference]: Start difference. First operand 300 states and 480 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:37,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:37,729 INFO L93 Difference]: Finished difference Result 865 states and 1381 transitions. [2023-12-16 19:38:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:38:37,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-16 19:38:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:37,732 INFO L225 Difference]: With dead ends: 865 [2023-12-16 19:38:37,732 INFO L226 Difference]: Without dead ends: 652 [2023-12-16 19:38:37,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-16 19:38:37,733 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 2198 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:37,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2198 Valid, 1975 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:38:37,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-12-16 19:38:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 302. [2023-12-16 19:38:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.5980066445182723) internal successors, (481), 301 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 481 transitions. [2023-12-16 19:38:37,739 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 481 transitions. Word has length 80 [2023-12-16 19:38:37,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:37,739 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 481 transitions. [2023-12-16 19:38:37,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 481 transitions. [2023-12-16 19:38:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 19:38:37,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:37,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:37,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 19:38:37,740 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:37,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:37,740 INFO L85 PathProgramCache]: Analyzing trace with hash 385963652, now seen corresponding path program 1 times [2023-12-16 19:38:37,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:37,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573225540] [2023-12-16 19:38:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:37,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:37,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:37,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573225540] [2023-12-16 19:38:37,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573225540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:37,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:37,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:38:37,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450023794] [2023-12-16 19:38:37,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:37,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:38:37,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:37,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:38:37,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:38:37,962 INFO L87 Difference]: Start difference. First operand 302 states and 481 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:38,181 INFO L93 Difference]: Finished difference Result 862 states and 1370 transitions. [2023-12-16 19:38:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:38:38,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-12-16 19:38:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:38,184 INFO L225 Difference]: With dead ends: 862 [2023-12-16 19:38:38,184 INFO L226 Difference]: Without dead ends: 644 [2023-12-16 19:38:38,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-16 19:38:38,185 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 2185 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:38,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2185 Valid, 1956 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:38:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-12-16 19:38:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 304. [2023-12-16 19:38:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.5907590759075907) internal successors, (482), 303 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 482 transitions. [2023-12-16 19:38:38,192 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 482 transitions. Word has length 81 [2023-12-16 19:38:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:38,195 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 482 transitions. [2023-12-16 19:38:38,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 482 transitions. [2023-12-16 19:38:38,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 19:38:38,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:38,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:38,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 19:38:38,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:38,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:38,197 INFO L85 PathProgramCache]: Analyzing trace with hash -468773362, now seen corresponding path program 1 times [2023-12-16 19:38:38,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:38,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455524369] [2023-12-16 19:38:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:38,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:38,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:38,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455524369] [2023-12-16 19:38:38,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455524369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:38,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:38,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:38:38,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672354328] [2023-12-16 19:38:38,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:38,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:38:38,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:38:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:38:38,362 INFO L87 Difference]: Start difference. First operand 304 states and 482 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:38,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:38,528 INFO L93 Difference]: Finished difference Result 859 states and 1359 transitions. [2023-12-16 19:38:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:38:38,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-12-16 19:38:38,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:38,531 INFO L225 Difference]: With dead ends: 859 [2023-12-16 19:38:38,531 INFO L226 Difference]: Without dead ends: 636 [2023-12-16 19:38:38,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-16 19:38:38,532 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 2172 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:38,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 1945 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:38:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-16 19:38:38,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 306. [2023-12-16 19:38:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.5836065573770493) internal successors, (483), 305 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 483 transitions. [2023-12-16 19:38:38,541 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 483 transitions. Word has length 82 [2023-12-16 19:38:38,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:38,541 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 483 transitions. [2023-12-16 19:38:38,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:38,542 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 483 transitions. [2023-12-16 19:38:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 19:38:38,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:38,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:38,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 19:38:38,542 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:38,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:38,543 INFO L85 PathProgramCache]: Analyzing trace with hash 541130730, now seen corresponding path program 1 times [2023-12-16 19:38:38,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:38,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582792933] [2023-12-16 19:38:38,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:38,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:38,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582792933] [2023-12-16 19:38:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582792933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:38,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:38,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022931342] [2023-12-16 19:38:38,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:38,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:38:38,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:38,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:38:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:38:38,744 INFO L87 Difference]: Start difference. First operand 306 states and 483 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:38,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:38,855 INFO L93 Difference]: Finished difference Result 667 states and 1058 transitions. [2023-12-16 19:38:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:38:38,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-16 19:38:38,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:38,858 INFO L225 Difference]: With dead ends: 667 [2023-12-16 19:38:38,859 INFO L226 Difference]: Without dead ends: 443 [2023-12-16 19:38:38,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:38:38,863 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1107 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:38,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 1166 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:38:38,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-12-16 19:38:38,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 293. [2023-12-16 19:38:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.5924657534246576) internal successors, (465), 292 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 465 transitions. [2023-12-16 19:38:38,871 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 465 transitions. Word has length 83 [2023-12-16 19:38:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:38,871 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 465 transitions. [2023-12-16 19:38:38,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 465 transitions. [2023-12-16 19:38:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 19:38:38,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:38,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:38,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 19:38:38,873 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:38,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1222415033, now seen corresponding path program 1 times [2023-12-16 19:38:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:38,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072797763] [2023-12-16 19:38:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:38,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:39,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:39,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072797763] [2023-12-16 19:38:39,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072797763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:38:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779334744] [2023-12-16 19:38:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:39,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:38:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:38:39,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:38:39,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 19:38:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:39,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 19:38:39,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:38:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:40,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:38:40,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779334744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:40,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:38:40,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-16 19:38:40,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963603619] [2023-12-16 19:38:40,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:40,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:38:40,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:40,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:38:40,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:38:40,417 INFO L87 Difference]: Start difference. First operand 293 states and 465 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:40,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:40,613 INFO L93 Difference]: Finished difference Result 496 states and 790 transitions. [2023-12-16 19:38:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:38:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-16 19:38:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:40,614 INFO L225 Difference]: With dead ends: 496 [2023-12-16 19:38:40,614 INFO L226 Difference]: Without dead ends: 293 [2023-12-16 19:38:40,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:38:40,615 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 288 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:40,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 499 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:38:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-16 19:38:40,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2023-12-16 19:38:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.5856164383561644) internal successors, (463), 292 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 463 transitions. [2023-12-16 19:38:40,622 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 463 transitions. Word has length 192 [2023-12-16 19:38:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:40,622 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 463 transitions. [2023-12-16 19:38:40,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 463 transitions. [2023-12-16 19:38:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-16 19:38:40,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:40,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:40,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 19:38:40,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 19:38:40,834 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:40,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1940119953, now seen corresponding path program 1 times [2023-12-16 19:38:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:40,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812047649] [2023-12-16 19:38:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:40,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:41,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:41,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812047649] [2023-12-16 19:38:41,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812047649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:41,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:38:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129102412] [2023-12-16 19:38:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:41,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:38:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:41,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:38:41,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:38:41,943 INFO L87 Difference]: Start difference. First operand 293 states and 463 transitions. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:42,275 INFO L93 Difference]: Finished difference Result 645 states and 1024 transitions. [2023-12-16 19:38:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:38:42,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-16 19:38:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:42,277 INFO L225 Difference]: With dead ends: 645 [2023-12-16 19:38:42,277 INFO L226 Difference]: Without dead ends: 435 [2023-12-16 19:38:42,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:38:42,278 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 809 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:42,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1389 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:38:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-16 19:38:42,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 352. [2023-12-16 19:38:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.5783475783475784) internal successors, (554), 351 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 554 transitions. [2023-12-16 19:38:42,285 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 554 transitions. Word has length 193 [2023-12-16 19:38:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:42,285 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 554 transitions. [2023-12-16 19:38:42,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 554 transitions. [2023-12-16 19:38:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-16 19:38:42,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:42,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:42,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 19:38:42,287 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:42,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:42,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2093454315, now seen corresponding path program 1 times [2023-12-16 19:38:42,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:42,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575528397] [2023-12-16 19:38:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:42,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:43,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:43,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575528397] [2023-12-16 19:38:43,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575528397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:43,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:43,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:38:43,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000596389] [2023-12-16 19:38:43,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:43,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:38:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:43,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:38:43,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:38:43,427 INFO L87 Difference]: Start difference. First operand 352 states and 554 transitions. Second operand has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:43,731 INFO L93 Difference]: Finished difference Result 706 states and 1108 transitions. [2023-12-16 19:38:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:38:43,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2023-12-16 19:38:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:43,733 INFO L225 Difference]: With dead ends: 706 [2023-12-16 19:38:43,733 INFO L226 Difference]: Without dead ends: 503 [2023-12-16 19:38:43,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:38:43,734 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 910 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:43,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1199 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:38:43,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-12-16 19:38:43,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 433. [2023-12-16 19:38:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.587962962962963) internal successors, (686), 432 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 686 transitions. [2023-12-16 19:38:43,742 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 686 transitions. Word has length 194 [2023-12-16 19:38:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:43,743 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 686 transitions. [2023-12-16 19:38:43,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 686 transitions. [2023-12-16 19:38:43,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-16 19:38:43,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:43,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:43,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 19:38:43,744 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:43,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash -157143283, now seen corresponding path program 1 times [2023-12-16 19:38:43,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:43,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888673009] [2023-12-16 19:38:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:44,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:44,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888673009] [2023-12-16 19:38:44,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888673009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:44,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:44,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:44,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241432125] [2023-12-16 19:38:44,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:44,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:38:44,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:44,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:38:44,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:38:44,860 INFO L87 Difference]: Start difference. First operand 433 states and 686 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:45,210 INFO L93 Difference]: Finished difference Result 718 states and 1142 transitions. [2023-12-16 19:38:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:38:45,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2023-12-16 19:38:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:45,212 INFO L225 Difference]: With dead ends: 718 [2023-12-16 19:38:45,212 INFO L226 Difference]: Without dead ends: 435 [2023-12-16 19:38:45,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:38:45,213 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 781 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:45,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 729 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:38:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-16 19:38:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 433. [2023-12-16 19:38:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.5856481481481481) internal successors, (685), 432 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 685 transitions. [2023-12-16 19:38:45,220 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 685 transitions. Word has length 195 [2023-12-16 19:38:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:45,220 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 685 transitions. [2023-12-16 19:38:45,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 685 transitions. [2023-12-16 19:38:45,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-16 19:38:45,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:45,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:45,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 19:38:45,222 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:45,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash -743419505, now seen corresponding path program 1 times [2023-12-16 19:38:45,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:45,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115263856] [2023-12-16 19:38:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:45,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:46,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:46,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115263856] [2023-12-16 19:38:46,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115263856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:46,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:46,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:46,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465599872] [2023-12-16 19:38:46,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:46,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:38:46,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:38:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:38:46,392 INFO L87 Difference]: Start difference. First operand 433 states and 685 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:46,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:46,743 INFO L93 Difference]: Finished difference Result 638 states and 1011 transitions. [2023-12-16 19:38:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:38:46,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2023-12-16 19:38:46,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:46,745 INFO L225 Difference]: With dead ends: 638 [2023-12-16 19:38:46,745 INFO L226 Difference]: Without dead ends: 435 [2023-12-16 19:38:46,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:38:46,745 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 723 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:46,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 722 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:38:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-16 19:38:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 434. [2023-12-16 19:38:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.584295612009238) internal successors, (686), 433 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 686 transitions. [2023-12-16 19:38:46,752 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 686 transitions. Word has length 195 [2023-12-16 19:38:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:46,753 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 686 transitions. [2023-12-16 19:38:46,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 686 transitions. [2023-12-16 19:38:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-16 19:38:46,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:46,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:46,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 19:38:46,754 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:46,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:46,755 INFO L85 PathProgramCache]: Analyzing trace with hash -41819631, now seen corresponding path program 1 times [2023-12-16 19:38:46,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:46,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916828355] [2023-12-16 19:38:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:46,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:49,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:49,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916828355] [2023-12-16 19:38:49,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916828355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:49,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:49,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:38:49,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24150931] [2023-12-16 19:38:49,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:49,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:38:49,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:49,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:38:49,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:38:49,991 INFO L87 Difference]: Start difference. First operand 434 states and 686 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:50,029 INFO L93 Difference]: Finished difference Result 706 states and 1120 transitions. [2023-12-16 19:38:50,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:38:50,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2023-12-16 19:38:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:50,031 INFO L225 Difference]: With dead ends: 706 [2023-12-16 19:38:50,031 INFO L226 Difference]: Without dead ends: 440 [2023-12-16 19:38:50,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:38:50,031 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 284 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:50,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1172 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:38:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-16 19:38:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 438. [2023-12-16 19:38:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.5789473684210527) internal successors, (690), 437 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 690 transitions. [2023-12-16 19:38:50,039 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 690 transitions. Word has length 195 [2023-12-16 19:38:50,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:50,039 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 690 transitions. [2023-12-16 19:38:50,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 690 transitions. [2023-12-16 19:38:50,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-16 19:38:50,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:50,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:50,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 19:38:50,041 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:50,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash 915367945, now seen corresponding path program 1 times [2023-12-16 19:38:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:50,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573466947] [2023-12-16 19:38:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:50,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:53,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:53,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573466947] [2023-12-16 19:38:53,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573466947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:53,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:53,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 19:38:53,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734340235] [2023-12-16 19:38:53,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:53,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 19:38:53,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:53,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 19:38:53,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:38:53,703 INFO L87 Difference]: Start difference. First operand 438 states and 690 transitions. Second operand has 9 states, 9 states have (on average 21.77777777777778) internal successors, (196), 8 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:54,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:54,119 INFO L93 Difference]: Finished difference Result 982 states and 1544 transitions. [2023-12-16 19:38:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 19:38:54,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.77777777777778) internal successors, (196), 8 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2023-12-16 19:38:54,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:54,123 INFO L225 Difference]: With dead ends: 982 [2023-12-16 19:38:54,124 INFO L226 Difference]: Without dead ends: 720 [2023-12-16 19:38:54,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:38:54,125 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 2573 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2573 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:54,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2573 Valid, 2411 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:38:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2023-12-16 19:38:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 537. [2023-12-16 19:38:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.5522388059701493) internal successors, (832), 536 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 832 transitions. [2023-12-16 19:38:54,146 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 832 transitions. Word has length 196 [2023-12-16 19:38:54,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:54,146 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 832 transitions. [2023-12-16 19:38:54,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.77777777777778) internal successors, (196), 8 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 832 transitions. [2023-12-16 19:38:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-16 19:38:54,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:54,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:54,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 19:38:54,149 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:54,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:54,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1751473083, now seen corresponding path program 1 times [2023-12-16 19:38:54,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:54,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893432498] [2023-12-16 19:38:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:54,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:56,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:56,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893432498] [2023-12-16 19:38:56,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893432498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:38:56,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:38:56,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:38:56,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783289100] [2023-12-16 19:38:56,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:38:56,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:38:56,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:38:56,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:38:56,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:38:56,284 INFO L87 Difference]: Start difference. First operand 537 states and 832 transitions. Second operand has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:56,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:38:56,426 INFO L93 Difference]: Finished difference Result 1209 states and 1906 transitions. [2023-12-16 19:38:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:38:56,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2023-12-16 19:38:56,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:38:56,429 INFO L225 Difference]: With dead ends: 1209 [2023-12-16 19:38:56,429 INFO L226 Difference]: Without dead ends: 940 [2023-12-16 19:38:56,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:38:56,431 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 831 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:38:56,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2416 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:38:56,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-12-16 19:38:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 801. [2023-12-16 19:38:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 1.565) internal successors, (1252), 800 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:56,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1252 transitions. [2023-12-16 19:38:56,448 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1252 transitions. Word has length 197 [2023-12-16 19:38:56,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:38:56,448 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 1252 transitions. [2023-12-16 19:38:56,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:38:56,448 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1252 transitions. [2023-12-16 19:38:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-16 19:38:56,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:38:56,450 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:38:56,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 19:38:56,450 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:38:56,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:38:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash -17368633, now seen corresponding path program 1 times [2023-12-16 19:38:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:38:56,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324466680] [2023-12-16 19:38:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:56,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:38:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:59,329 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:38:59,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:38:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324466680] [2023-12-16 19:38:59,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324466680] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:38:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048739099] [2023-12-16 19:38:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:38:59,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:38:59,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:38:59,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:38:59,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 19:38:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:38:59,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-16 19:38:59,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:39:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:39:00,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:39:00,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048739099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:39:00,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:39:00,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2023-12-16 19:39:00,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895400587] [2023-12-16 19:39:00,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:39:00,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 19:39:00,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:39:00,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 19:39:00,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-12-16 19:39:00,605 INFO L87 Difference]: Start difference. First operand 801 states and 1252 transitions. Second operand has 10 states, 10 states have (on average 19.7) internal successors, (197), 9 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:39:01,290 INFO L93 Difference]: Finished difference Result 1739 states and 2735 transitions. [2023-12-16 19:39:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 19:39:01,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.7) internal successors, (197), 9 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2023-12-16 19:39:01,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:39:01,294 INFO L225 Difference]: With dead ends: 1739 [2023-12-16 19:39:01,294 INFO L226 Difference]: Without dead ends: 1089 [2023-12-16 19:39:01,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-12-16 19:39:01,296 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 2228 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2228 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 19:39:01,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2228 Valid, 1643 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 19:39:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2023-12-16 19:39:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 701. [2023-12-16 19:39:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.5814285714285714) internal successors, (1107), 700 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1107 transitions. [2023-12-16 19:39:01,310 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1107 transitions. Word has length 197 [2023-12-16 19:39:01,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:39:01,310 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1107 transitions. [2023-12-16 19:39:01,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.7) internal successors, (197), 9 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:01,310 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1107 transitions. [2023-12-16 19:39:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-16 19:39:01,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:39:01,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:39:01,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 19:39:01,521 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,SelfDestructingSolverStorable20 [2023-12-16 19:39:01,522 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:39:01,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:39:01,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1563278663, now seen corresponding path program 1 times [2023-12-16 19:39:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:39:01,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697804242] [2023-12-16 19:39:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:39:01,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:39:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:39:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:39:03,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:39:03,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697804242] [2023-12-16 19:39:03,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697804242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:39:03,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:39:03,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:39:03,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513802538] [2023-12-16 19:39:03,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:39:03,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:39:03,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:39:03,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:39:03,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:39:03,663 INFO L87 Difference]: Start difference. First operand 701 states and 1107 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:39:03,709 INFO L93 Difference]: Finished difference Result 705 states and 1110 transitions. [2023-12-16 19:39:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:39:03,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2023-12-16 19:39:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:39:03,711 INFO L225 Difference]: With dead ends: 705 [2023-12-16 19:39:03,711 INFO L226 Difference]: Without dead ends: 442 [2023-12-16 19:39:03,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:39:03,713 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 282 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:39:03,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1172 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:39:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-16 19:39:03,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 440. [2023-12-16 19:39:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.571753986332574) internal successors, (690), 439 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 690 transitions. [2023-12-16 19:39:03,721 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 690 transitions. Word has length 197 [2023-12-16 19:39:03,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:39:03,721 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 690 transitions. [2023-12-16 19:39:03,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 690 transitions. [2023-12-16 19:39:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-16 19:39:03,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:39:03,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:39:03,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 19:39:03,722 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:39:03,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:39:03,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1844465787, now seen corresponding path program 1 times [2023-12-16 19:39:03,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:39:03,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541198981] [2023-12-16 19:39:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:39:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:39:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:39:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:39:06,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:39:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541198981] [2023-12-16 19:39:06,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541198981] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:39:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557628424] [2023-12-16 19:39:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:39:06,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:39:06,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:39:06,444 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) [2023-12-16 19:39:06,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 19:39:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:39:07,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-16 19:39:07,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:39:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:39:08,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:39:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:39:09,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557628424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:39:09,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:39:09,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 44 [2023-12-16 19:39:09,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090785134] [2023-12-16 19:39:09,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:39:09,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-16 19:39:09,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:39:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-16 19:39:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1756, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 19:39:09,140 INFO L87 Difference]: Start difference. First operand 440 states and 690 transitions. Second operand has 45 states, 45 states have (on average 12.6) internal successors, (567), 44 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:39:12,396 INFO L93 Difference]: Finished difference Result 1703 states and 2675 transitions. [2023-12-16 19:39:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-16 19:39:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 12.6) internal successors, (567), 44 states have internal predecessors, (567), 0 states have call successors, (0), 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 197 [2023-12-16 19:39:12,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:39:12,405 INFO L225 Difference]: With dead ends: 1703 [2023-12-16 19:39:12,405 INFO L226 Difference]: Without dead ends: 1497 [2023-12-16 19:39:12,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1273, Invalid=5533, Unknown=0, NotChecked=0, Total=6806 [2023-12-16 19:39:12,408 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 8461 mSDsluCounter, 8683 mSDsCounter, 0 mSdLazyCounter, 5002 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8461 SdHoareTripleChecker+Valid, 8988 SdHoareTripleChecker+Invalid, 5026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:39:12,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8461 Valid, 8988 Invalid, 5026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 5002 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 19:39:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-12-16 19:39:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 841. [2023-12-16 19:39:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.5571428571428572) internal successors, (1308), 840 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1308 transitions. [2023-12-16 19:39:12,444 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1308 transitions. Word has length 197 [2023-12-16 19:39:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:39:12,445 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1308 transitions. [2023-12-16 19:39:12,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 12.6) internal successors, (567), 44 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1308 transitions. [2023-12-16 19:39:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-16 19:39:12,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:39:12,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:39:12,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 19:39:12,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:39:12,658 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:39:12,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:39:12,658 INFO L85 PathProgramCache]: Analyzing trace with hash 456665701, now seen corresponding path program 1 times [2023-12-16 19:39:12,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:39:12,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562897024] [2023-12-16 19:39:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:39:12,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:39:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:39:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:39:13,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:39:13,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562897024] [2023-12-16 19:39:13,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562897024] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:39:13,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023304550] [2023-12-16 19:39:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:39:13,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:39:13,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:39:13,992 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) [2023-12-16 19:39:13,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 19:39:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:39:14,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 19:39:14,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:39:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:39:14,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:39:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:39:15,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023304550] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:39:15,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:39:15,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 12] total 24 [2023-12-16 19:39:15,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449409062] [2023-12-16 19:39:15,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:39:15,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 19:39:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:39:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 19:39:15,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2023-12-16 19:39:15,649 INFO L87 Difference]: Start difference. First operand 841 states and 1308 transitions. Second operand has 25 states, 25 states have (on average 17.2) internal successors, (430), 24 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:16,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:39:16,701 INFO L93 Difference]: Finished difference Result 2231 states and 3500 transitions. [2023-12-16 19:39:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 19:39:16,702 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 17.2) internal successors, (430), 24 states have internal predecessors, (430), 0 states have call successors, (0), 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 197 [2023-12-16 19:39:16,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:39:16,707 INFO L225 Difference]: With dead ends: 2231 [2023-12-16 19:39:16,707 INFO L226 Difference]: Without dead ends: 1781 [2023-12-16 19:39:16,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 375 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=490, Invalid=1490, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 19:39:16,709 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 3528 mSDsluCounter, 7696 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 19:39:16,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3528 Valid, 8156 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 19:39:16,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2023-12-16 19:39:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1096. [2023-12-16 19:39:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 1095 states have (on average 1.5579908675799086) internal successors, (1706), 1095 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1706 transitions. [2023-12-16 19:39:16,736 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1706 transitions. Word has length 197 [2023-12-16 19:39:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:39:16,736 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1706 transitions. [2023-12-16 19:39:16,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 17.2) internal successors, (430), 24 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:39:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1706 transitions. [2023-12-16 19:39:16,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-16 19:39:16,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:39:16,738 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:39:16,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 19:39:16,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:39:16,954 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:39:16,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:39:16,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1396998611, now seen corresponding path program 1 times [2023-12-16 19:39:16,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:39:16,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945840552] [2023-12-16 19:39:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:39:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2023-12-16 19:39:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-16 19:39:17,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:39:17,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 19:39:17,910 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 199 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [945840552] and IpTcStrategyModuleZ3 [963438415]. [2023-12-16 19:39:17,913 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:39:17,915 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:39:17,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:39:17 BoogieIcfgContainer [2023-12-16 19:39:17,916 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:39:17,916 INFO L158 Benchmark]: Toolchain (without parser) took 48906.08ms. Allocated memory was 157.3MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 97.5MB in the beginning and 631.9MB in the end (delta: -534.4MB). Peak memory consumption was 610.1MB. Max. memory is 8.0GB. [2023-12-16 19:39:17,916 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 157.3MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:39:17,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.56ms. Allocated memory was 157.3MB in the beginning and 249.6MB in the end (delta: 92.3MB). Free memory was 97.1MB in the beginning and 211.2MB in the end (delta: -114.1MB). Peak memory consumption was 44.6MB. Max. memory is 8.0GB. [2023-12-16 19:39:17,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 163.59ms. Allocated memory is still 249.6MB. Free memory was 210.7MB in the beginning and 179.7MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-16 19:39:17,917 INFO L158 Benchmark]: Boogie Preprocessor took 211.02ms. Allocated memory is still 249.6MB. Free memory was 179.7MB in the beginning and 160.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 19:39:17,917 INFO L158 Benchmark]: RCFGBuilder took 1593.18ms. Allocated memory is still 249.6MB. Free memory was 160.3MB in the beginning and 131.4MB in the end (delta: 29.0MB). Peak memory consumption was 121.2MB. Max. memory is 8.0GB. [2023-12-16 19:39:17,917 INFO L158 Benchmark]: TraceAbstraction took 46432.69ms. Allocated memory was 249.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 130.3MB in the beginning and 631.9MB in the end (delta: -501.6MB). Peak memory consumption was 550.2MB. Max. memory is 8.0GB. [2023-12-16 19:39:17,918 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-16 19:39:17,920 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 157.3MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 500.56ms. Allocated memory was 157.3MB in the beginning and 249.6MB in the end (delta: 92.3MB). Free memory was 97.1MB in the beginning and 211.2MB in the end (delta: -114.1MB). Peak memory consumption was 44.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 163.59ms. Allocated memory is still 249.6MB. Free memory was 210.7MB in the beginning and 179.7MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 211.02ms. Allocated memory is still 249.6MB. Free memory was 179.7MB in the beginning and 160.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * RCFGBuilder took 1593.18ms. Allocated memory is still 249.6MB. Free memory was 160.3MB in the beginning and 131.4MB in the end (delta: 29.0MB). Peak memory consumption was 121.2MB. Max. memory is 8.0GB. * TraceAbstraction took 46432.69ms. Allocated memory was 249.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 130.3MB in the beginning and 631.9MB in the end (delta: -501.6MB). Peak memory consumption was 550.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 199 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [945840552] and IpTcStrategyModuleZ3 [963438415]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.4s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37352 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37352 mSDsluCounter, 48633 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39657 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11251 IncrementalHoareTripleChecker+Invalid, 11315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 8976 mSDtfsCounter, 11251 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1472 GetRequests, 1152 SyntacticMatches, 5 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1096occurred in iteration=24, InterpolantAutomatonStates: 230, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 24 MinimizatonAttempts, 4706 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 10.9s SatisfiabilityAnalysisTime, 21.1s InterpolantComputationTime, 4068 NumberOfCodeBlocks, 4068 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 4432 ConstructedInterpolants, 0 QuantifiedInterpolants, 28597 SizeOfPredicates, 54 NumberOfNonLiveVariables, 7528 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 30 InterpolantComputations, 22 PerfectInterpolantSequences, 358/450 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown