/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.client_server.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 17:26:25,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 17:26:25,482 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 17:26:25,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 17:26:25,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 17:26:25,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 17:26:25,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 17:26:25,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 17:26:25,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 17:26:25,512 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 17:26:25,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 17:26:25,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 17:26:25,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 17:26:25,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 17:26:25,514 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 17:26:25,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 17:26:25,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 17:26:25,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 17:26:25,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 17:26:25,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 17:26:25,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 17:26:25,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 17:26:25,516 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 17:26:25,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 17:26:25,517 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 17:26:25,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 17:26:25,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 17:26:25,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 17:26:25,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 17:26:25,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 17:26:25,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 17:26:25,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 17:26:25,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 17:26:25,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 17:26:25,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 17:26:25,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 17:26:25,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 17:26:25,519 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 17:26:25,519 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 17:26:25,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 17:26:25,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 17:26:25,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 17:26:25,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 17:26:25,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 17:26:25,740 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 17:26:25,741 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 17:26:25,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.client_server.c [2023-12-25 17:26:26,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 17:26:27,006 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 17:26:27,006 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.client_server.c [2023-12-25 17:26:27,033 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e32d727/dd1e598f504c49d99dcc95682e2967b8/FLAG468bf5a4f [2023-12-25 17:26:27,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e32d727/dd1e598f504c49d99dcc95682e2967b8 [2023-12-25 17:26:27,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 17:26:27,049 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 17:26:27,050 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 17:26:27,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 17:26:27,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 17:26:27,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1452ed7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27, skipping insertion in model container [2023-12-25 17:26:27,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,083 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 17:26:27,187 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.client_server.c[1253,1266] [2023-12-25 17:26:27,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 17:26:27,341 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 17:26:27,348 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.client_server.c[1253,1266] [2023-12-25 17:26:27,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 17:26:27,402 INFO L206 MainTranslator]: Completed translation [2023-12-25 17:26:27,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27 WrapperNode [2023-12-25 17:26:27,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 17:26:27,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 17:26:27,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 17:26:27,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 17:26:27,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,506 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 963 [2023-12-25 17:26:27,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 17:26:27,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 17:26:27,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 17:26:27,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 17:26:27,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,576 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 17:26:27,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,626 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 17:26:27,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 17:26:27,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 17:26:27,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 17:26:27,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (1/1) ... [2023-12-25 17:26:27,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 17:26:27,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:26:27,697 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) [2023-12-25 17:26:27,714 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 [2023-12-25 17:26:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 17:26:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 17:26:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 17:26:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 17:26:27,885 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 17:26:27,889 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 17:26:28,574 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 17:26:28,613 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 17:26:28,613 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 17:26:28,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:26:28 BoogieIcfgContainer [2023-12-25 17:26:28,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 17:26:28,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 17:26:28,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 17:26:28,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 17:26:28,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 05:26:27" (1/3) ... [2023-12-25 17:26:28,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b948de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:26:28, skipping insertion in model container [2023-12-25 17:26:28,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:26:27" (2/3) ... [2023-12-25 17:26:28,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b948de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:26:28, skipping insertion in model container [2023-12-25 17:26:28,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:26:28" (3/3) ... [2023-12-25 17:26:28,621 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.client_server.c [2023-12-25 17:26:28,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 17:26:28,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 17:26:28,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 17:26:28,676 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;@6e8975e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 17:26:28,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 17:26:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 156 states have (on average 1.6666666666666667) internal successors, (260), 157 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-25 17:26:28,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:28,684 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] [2023-12-25 17:26:28,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:28,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash 12068666, now seen corresponding path program 1 times [2023-12-25 17:26:28,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:28,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047448807] [2023-12-25 17:26:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:28,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:29,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:29,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047448807] [2023-12-25 17:26:29,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047448807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:29,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:29,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:26:29,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631610666] [2023-12-25 17:26:29,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:29,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:26:29,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:26:29,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:26:29,440 INFO L87 Difference]: Start difference. First operand has 158 states, 156 states have (on average 1.6666666666666667) internal successors, (260), 157 states have internal predecessors, (260), 0 states have call successors, (0), 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 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:29,505 INFO L93 Difference]: Finished difference Result 300 states and 496 transitions. [2023-12-25 17:26:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:26:29,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-25 17:26:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:29,519 INFO L225 Difference]: With dead ends: 300 [2023-12-25 17:26:29,519 INFO L226 Difference]: Without dead ends: 158 [2023-12-25 17:26:29,522 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 [2023-12-25 17:26:29,525 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 754 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 [2023-12-25 17:26:29,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 754 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:26:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-25 17:26:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-12-25 17:26:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.643312101910828) internal successors, (258), 157 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:29,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 258 transitions. [2023-12-25 17:26:29,568 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 258 transitions. Word has length 40 [2023-12-25 17:26:29,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:29,568 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 258 transitions. [2023-12-25 17:26:29,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 258 transitions. [2023-12-25 17:26:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-25 17:26:29,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:29,569 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] [2023-12-25 17:26:29,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 17:26:29,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:29,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:29,571 INFO L85 PathProgramCache]: Analyzing trace with hash 375913392, now seen corresponding path program 1 times [2023-12-25 17:26:29,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:29,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122665659] [2023-12-25 17:26:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:29,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:29,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:29,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122665659] [2023-12-25 17:26:29,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122665659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:29,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:29,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:26:29,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058746141] [2023-12-25 17:26:29,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:29,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:26:29,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:29,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:26:29,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:26:29,833 INFO L87 Difference]: Start difference. First operand 158 states and 258 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:29,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:29,863 INFO L93 Difference]: Finished difference Result 303 states and 494 transitions. [2023-12-25 17:26:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:26:29,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-25 17:26:29,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:29,866 INFO L225 Difference]: With dead ends: 303 [2023-12-25 17:26:29,866 INFO L226 Difference]: Without dead ends: 161 [2023-12-25 17:26:29,868 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 [2023-12-25 17:26:29,869 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 752 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 [2023-12-25 17:26:29,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 752 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:26:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-25 17:26:29,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2023-12-25 17:26:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.6352201257861636) internal successors, (260), 159 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 260 transitions. [2023-12-25 17:26:29,882 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 260 transitions. Word has length 41 [2023-12-25 17:26:29,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:29,883 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 260 transitions. [2023-12-25 17:26:29,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:29,883 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 260 transitions. [2023-12-25 17:26:29,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-25 17:26:29,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:29,884 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] [2023-12-25 17:26:29,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 17:26:29,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:29,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:29,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1443806446, now seen corresponding path program 1 times [2023-12-25 17:26:29,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:29,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493157893] [2023-12-25 17:26:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:29,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:30,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493157893] [2023-12-25 17:26:30,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493157893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:30,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:30,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:26:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038194115] [2023-12-25 17:26:30,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:30,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:26:30,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:26:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:26:30,422 INFO L87 Difference]: Start difference. First operand 160 states and 260 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:30,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:30,515 INFO L93 Difference]: Finished difference Result 600 states and 972 transitions. [2023-12-25 17:26:30,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 17:26:30,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-25 17:26:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:30,517 INFO L225 Difference]: With dead ends: 600 [2023-12-25 17:26:30,517 INFO L226 Difference]: Without dead ends: 456 [2023-12-25 17:26:30,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:26:30,521 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 683 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:30,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1279 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:26:30,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-25 17:26:30,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 165. [2023-12-25 17:26:30,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.6219512195121952) internal successors, (266), 164 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:30,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 266 transitions. [2023-12-25 17:26:30,536 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 266 transitions. Word has length 42 [2023-12-25 17:26:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:30,536 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 266 transitions. [2023-12-25 17:26:30,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 266 transitions. [2023-12-25 17:26:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-25 17:26:30,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:30,541 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] [2023-12-25 17:26:30,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 17:26:30,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:30,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:30,542 INFO L85 PathProgramCache]: Analyzing trace with hash 587674822, now seen corresponding path program 1 times [2023-12-25 17:26:30,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:30,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108251222] [2023-12-25 17:26:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:30,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:30,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:30,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108251222] [2023-12-25 17:26:30,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108251222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:30,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:30,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 17:26:30,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559483776] [2023-12-25 17:26:30,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:30,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:26:30,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:30,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:26:30,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:26:30,959 INFO L87 Difference]: Start difference. First operand 165 states and 266 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:31,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:31,198 INFO L93 Difference]: Finished difference Result 770 states and 1237 transitions. [2023-12-25 17:26:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 17:26:31,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-25 17:26:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:31,201 INFO L225 Difference]: With dead ends: 770 [2023-12-25 17:26:31,201 INFO L226 Difference]: Without dead ends: 621 [2023-12-25 17:26:31,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-25 17:26:31,202 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1356 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:31,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 2609 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:26:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-12-25 17:26:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 169. [2023-12-25 17:26:31,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.6130952380952381) internal successors, (271), 168 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:31,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 271 transitions. [2023-12-25 17:26:31,207 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 271 transitions. Word has length 43 [2023-12-25 17:26:31,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:31,208 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 271 transitions. [2023-12-25 17:26:31,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 271 transitions. [2023-12-25 17:26:31,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-25 17:26:31,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:31,209 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] [2023-12-25 17:26:31,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 17:26:31,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:31,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:31,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1970344724, now seen corresponding path program 1 times [2023-12-25 17:26:31,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:31,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206278197] [2023-12-25 17:26:31,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:31,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:31,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:31,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206278197] [2023-12-25 17:26:31,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206278197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:31,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:31,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:26:31,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173135253] [2023-12-25 17:26:31,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:31,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:26:31,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:31,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:26:31,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:26:31,495 INFO L87 Difference]: Start difference. First operand 169 states and 271 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:31,595 INFO L93 Difference]: Finished difference Result 475 states and 761 transitions. [2023-12-25 17:26:31,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:26:31,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-25 17:26:31,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:31,596 INFO L225 Difference]: With dead ends: 475 [2023-12-25 17:26:31,596 INFO L226 Difference]: Without dead ends: 322 [2023-12-25 17:26:31,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:26:31,597 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 621 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:31,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 804 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:26:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-25 17:26:31,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 172. [2023-12-25 17:26:31,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6023391812865497) internal successors, (274), 171 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 274 transitions. [2023-12-25 17:26:31,600 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 274 transitions. Word has length 43 [2023-12-25 17:26:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:31,601 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 274 transitions. [2023-12-25 17:26:31,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 274 transitions. [2023-12-25 17:26:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-25 17:26:31,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:31,601 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] [2023-12-25 17:26:31,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 17:26:31,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:31,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:31,602 INFO L85 PathProgramCache]: Analyzing trace with hash -195337362, now seen corresponding path program 1 times [2023-12-25 17:26:31,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:31,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438627901] [2023-12-25 17:26:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:31,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:32,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:32,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438627901] [2023-12-25 17:26:32,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438627901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:32,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:32,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 17:26:32,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535790870] [2023-12-25 17:26:32,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:32,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 17:26:32,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:32,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 17:26:32,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:26:32,277 INFO L87 Difference]: Start difference. First operand 172 states and 274 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:32,499 INFO L93 Difference]: Finished difference Result 634 states and 1009 transitions. [2023-12-25 17:26:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 17:26:32,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-25 17:26:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:32,500 INFO L225 Difference]: With dead ends: 634 [2023-12-25 17:26:32,500 INFO L226 Difference]: Without dead ends: 478 [2023-12-25 17:26:32,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:26:32,501 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 938 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:32,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 2003 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:26:32,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-25 17:26:32,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 176. [2023-12-25 17:26:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.5942857142857143) internal successors, (279), 175 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:32,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 279 transitions. [2023-12-25 17:26:32,506 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 279 transitions. Word has length 43 [2023-12-25 17:26:32,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:32,506 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 279 transitions. [2023-12-25 17:26:32,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 279 transitions. [2023-12-25 17:26:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-25 17:26:32,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:32,507 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] [2023-12-25 17:26:32,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 17:26:32,507 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:32,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1708195502, now seen corresponding path program 1 times [2023-12-25 17:26:32,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728444982] [2023-12-25 17:26:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:32,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:32,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:32,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728444982] [2023-12-25 17:26:32,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728444982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:32,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:32,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:26:32,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864348661] [2023-12-25 17:26:32,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:32,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:26:32,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:32,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:26:32,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:26:32,903 INFO L87 Difference]: Start difference. First operand 176 states and 279 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:32,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:32,999 INFO L93 Difference]: Finished difference Result 646 states and 1026 transitions. [2023-12-25 17:26:33,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 17:26:33,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-25 17:26:33,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:33,001 INFO L225 Difference]: With dead ends: 646 [2023-12-25 17:26:33,001 INFO L226 Difference]: Without dead ends: 490 [2023-12-25 17:26:33,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:26:33,002 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 685 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:33,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1875 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:26:33,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-25 17:26:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 180. [2023-12-25 17:26:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.5865921787709498) internal successors, (284), 179 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 284 transitions. [2023-12-25 17:26:33,006 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 284 transitions. Word has length 43 [2023-12-25 17:26:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:33,007 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 284 transitions. [2023-12-25 17:26:33,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 284 transitions. [2023-12-25 17:26:33,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-25 17:26:33,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:33,007 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] [2023-12-25 17:26:33,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 17:26:33,007 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:33,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:33,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1730827756, now seen corresponding path program 1 times [2023-12-25 17:26:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013078170] [2023-12-25 17:26:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:33,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:33,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:33,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013078170] [2023-12-25 17:26:33,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013078170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:33,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:33,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 17:26:33,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431048823] [2023-12-25 17:26:33,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:33,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:26:33,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:33,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:26:33,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:26:33,558 INFO L87 Difference]: Start difference. First operand 180 states and 284 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:33,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:33,907 INFO L93 Difference]: Finished difference Result 791 states and 1253 transitions. [2023-12-25 17:26:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 17:26:33,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-25 17:26:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:33,910 INFO L225 Difference]: With dead ends: 791 [2023-12-25 17:26:33,910 INFO L226 Difference]: Without dead ends: 631 [2023-12-25 17:26:33,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2023-12-25 17:26:33,911 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 2089 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:33,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 2021 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:26:33,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-12-25 17:26:33,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 180. [2023-12-25 17:26:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.5810055865921788) internal successors, (283), 179 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 283 transitions. [2023-12-25 17:26:33,934 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 283 transitions. Word has length 43 [2023-12-25 17:26:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:33,935 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 283 transitions. [2023-12-25 17:26:33,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 283 transitions. [2023-12-25 17:26:33,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-25 17:26:33,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:33,935 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] [2023-12-25 17:26:33,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 17:26:33,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:33,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:33,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1417552006, now seen corresponding path program 1 times [2023-12-25 17:26:33,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:33,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910694833] [2023-12-25 17:26:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:33,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:34,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:34,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910694833] [2023-12-25 17:26:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910694833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:34,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:34,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 17:26:34,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974019743] [2023-12-25 17:26:34,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:34,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:26:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:26:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:26:34,267 INFO L87 Difference]: Start difference. First operand 180 states and 283 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:34,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:34,615 INFO L93 Difference]: Finished difference Result 1139 states and 1801 transitions. [2023-12-25 17:26:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-25 17:26:34,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-25 17:26:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:34,618 INFO L225 Difference]: With dead ends: 1139 [2023-12-25 17:26:34,618 INFO L226 Difference]: Without dead ends: 979 [2023-12-25 17:26:34,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2023-12-25 17:26:34,619 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 2550 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2550 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:34,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2550 Valid, 2606 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:26:34,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2023-12-25 17:26:34,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 189. [2023-12-25 17:26:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.574468085106383) internal successors, (296), 188 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:34,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 296 transitions. [2023-12-25 17:26:34,626 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 296 transitions. Word has length 44 [2023-12-25 17:26:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:34,626 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 296 transitions. [2023-12-25 17:26:34,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 296 transitions. [2023-12-25 17:26:34,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-25 17:26:34,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:34,627 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] [2023-12-25 17:26:34,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 17:26:34,627 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:34,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:34,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1198697288, now seen corresponding path program 1 times [2023-12-25 17:26:34,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:34,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35574002] [2023-12-25 17:26:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:34,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:34,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:34,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35574002] [2023-12-25 17:26:34,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35574002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:34,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:34,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 17:26:34,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509696532] [2023-12-25 17:26:34,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:34,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:26:34,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:26:34,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:26:34,910 INFO L87 Difference]: Start difference. First operand 189 states and 296 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:35,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:35,082 INFO L93 Difference]: Finished difference Result 873 states and 1370 transitions. [2023-12-25 17:26:35,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 17:26:35,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-25 17:26:35,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:35,085 INFO L225 Difference]: With dead ends: 873 [2023-12-25 17:26:35,085 INFO L226 Difference]: Without dead ends: 704 [2023-12-25 17:26:35,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-25 17:26:35,086 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1351 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:35,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 2377 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:26:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-25 17:26:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 193. [2023-12-25 17:26:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.5677083333333333) internal successors, (301), 192 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 301 transitions. [2023-12-25 17:26:35,092 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 301 transitions. Word has length 44 [2023-12-25 17:26:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:35,092 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 301 transitions. [2023-12-25 17:26:35,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 301 transitions. [2023-12-25 17:26:35,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-25 17:26:35,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:35,093 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] [2023-12-25 17:26:35,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 17:26:35,093 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:35,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1278764654, now seen corresponding path program 1 times [2023-12-25 17:26:35,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:35,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312023857] [2023-12-25 17:26:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:35,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:35,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:35,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312023857] [2023-12-25 17:26:35,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312023857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:35,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:35,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 17:26:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138705224] [2023-12-25 17:26:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:35,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 17:26:35,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:35,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 17:26:35,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:26:35,806 INFO L87 Difference]: Start difference. First operand 193 states and 301 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:36,157 INFO L93 Difference]: Finished difference Result 697 states and 1089 transitions. [2023-12-25 17:26:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 17:26:36,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-25 17:26:36,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:36,160 INFO L225 Difference]: With dead ends: 697 [2023-12-25 17:26:36,160 INFO L226 Difference]: Without dead ends: 524 [2023-12-25 17:26:36,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-12-25 17:26:36,161 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 1588 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:36,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1818 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:26:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-12-25 17:26:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 198. [2023-12-25 17:26:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.5532994923857868) internal successors, (306), 197 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:36,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 306 transitions. [2023-12-25 17:26:36,166 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 306 transitions. Word has length 44 [2023-12-25 17:26:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:36,167 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 306 transitions. [2023-12-25 17:26:36,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:36,167 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 306 transitions. [2023-12-25 17:26:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-25 17:26:36,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:36,167 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] [2023-12-25 17:26:36,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 17:26:36,167 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:36,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1945100164, now seen corresponding path program 1 times [2023-12-25 17:26:36,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:36,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140635593] [2023-12-25 17:26:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:36,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:36,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:36,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140635593] [2023-12-25 17:26:36,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140635593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:36,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:36,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 17:26:36,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116516196] [2023-12-25 17:26:36,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:36,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:26:36,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:26:36,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:26:36,462 INFO L87 Difference]: Start difference. First operand 198 states and 306 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:36,648 INFO L93 Difference]: Finished difference Result 900 states and 1402 transitions. [2023-12-25 17:26:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 17:26:36,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-25 17:26:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:36,650 INFO L225 Difference]: With dead ends: 900 [2023-12-25 17:26:36,650 INFO L226 Difference]: Without dead ends: 727 [2023-12-25 17:26:36,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-25 17:26:36,652 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 916 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:36,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 2488 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:26:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-12-25 17:26:36,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 202. [2023-12-25 17:26:36,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.5472636815920398) internal successors, (311), 201 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 311 transitions. [2023-12-25 17:26:36,659 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 311 transitions. Word has length 45 [2023-12-25 17:26:36,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:36,659 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 311 transitions. [2023-12-25 17:26:36,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 311 transitions. [2023-12-25 17:26:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-25 17:26:36,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:36,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:26:36,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 17:26:36,660 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:36,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash 355722426, now seen corresponding path program 1 times [2023-12-25 17:26:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:36,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559521403] [2023-12-25 17:26:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:36,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:37,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:37,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559521403] [2023-12-25 17:26:37,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559521403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:37,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:37,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 17:26:37,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352403054] [2023-12-25 17:26:37,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:37,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 17:26:37,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 17:26:37,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:26:37,068 INFO L87 Difference]: Start difference. First operand 202 states and 311 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:38,310 INFO L93 Difference]: Finished difference Result 1582 states and 2474 transitions. [2023-12-25 17:26:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-25 17:26:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-25 17:26:38,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:38,314 INFO L225 Difference]: With dead ends: 1582 [2023-12-25 17:26:38,314 INFO L226 Difference]: Without dead ends: 1405 [2023-12-25 17:26:38,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=712, Invalid=2710, Unknown=0, NotChecked=0, Total=3422 [2023-12-25 17:26:38,316 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 2952 mSDsluCounter, 4779 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 5236 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:38,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 5236 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 17:26:38,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2023-12-25 17:26:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 211. [2023-12-25 17:26:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.542857142857143) internal successors, (324), 210 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 324 transitions. [2023-12-25 17:26:38,325 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 324 transitions. Word has length 45 [2023-12-25 17:26:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:38,325 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 324 transitions. [2023-12-25 17:26:38,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:38,325 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 324 transitions. [2023-12-25 17:26:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-25 17:26:38,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:38,326 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] [2023-12-25 17:26:38,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 17:26:38,326 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:38,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:38,327 INFO L85 PathProgramCache]: Analyzing trace with hash 730685090, now seen corresponding path program 1 times [2023-12-25 17:26:38,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:38,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992145885] [2023-12-25 17:26:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:38,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:38,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992145885] [2023-12-25 17:26:39,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992145885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:39,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:39,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 17:26:39,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473595561] [2023-12-25 17:26:39,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:39,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:26:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:26:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:26:39,001 INFO L87 Difference]: Start difference. First operand 211 states and 324 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:39,263 INFO L93 Difference]: Finished difference Result 584 states and 901 transitions. [2023-12-25 17:26:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 17:26:39,263 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-25 17:26:39,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:39,265 INFO L225 Difference]: With dead ends: 584 [2023-12-25 17:26:39,265 INFO L226 Difference]: Without dead ends: 398 [2023-12-25 17:26:39,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-25 17:26:39,265 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 1127 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:39,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1628 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:26:39,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-12-25 17:26:39,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 216. [2023-12-25 17:26:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.5302325581395348) internal successors, (329), 215 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 329 transitions. [2023-12-25 17:26:39,271 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 329 transitions. Word has length 45 [2023-12-25 17:26:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:39,271 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 329 transitions. [2023-12-25 17:26:39,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 329 transitions. [2023-12-25 17:26:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 17:26:39,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:39,271 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] [2023-12-25 17:26:39,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 17:26:39,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:39,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash 546051130, now seen corresponding path program 1 times [2023-12-25 17:26:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:39,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336277246] [2023-12-25 17:26:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:39,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:39,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336277246] [2023-12-25 17:26:39,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336277246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:39,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:39,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-25 17:26:39,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366655469] [2023-12-25 17:26:39,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:39,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 17:26:39,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:39,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 17:26:39,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-12-25 17:26:39,729 INFO L87 Difference]: Start difference. First operand 216 states and 329 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:42,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:42,268 INFO L93 Difference]: Finished difference Result 2081 states and 3237 transitions. [2023-12-25 17:26:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-25 17:26:42,269 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-12-25 17:26:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:42,279 INFO L225 Difference]: With dead ends: 2081 [2023-12-25 17:26:42,279 INFO L226 Difference]: Without dead ends: 1895 [2023-12-25 17:26:42,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4261 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2026, Invalid=8894, Unknown=0, NotChecked=0, Total=10920 [2023-12-25 17:26:42,285 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 5695 mSDsluCounter, 6351 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5695 SdHoareTripleChecker+Valid, 6619 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:42,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5695 Valid, 6619 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 17:26:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2023-12-25 17:26:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 225. [2023-12-25 17:26:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.5267857142857142) internal successors, (342), 224 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 342 transitions. [2023-12-25 17:26:42,295 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 342 transitions. Word has length 46 [2023-12-25 17:26:42,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:42,296 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 342 transitions. [2023-12-25 17:26:42,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 342 transitions. [2023-12-25 17:26:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 17:26:42,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:42,296 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] [2023-12-25 17:26:42,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-25 17:26:42,297 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:42,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:42,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1557168380, now seen corresponding path program 1 times [2023-12-25 17:26:42,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:42,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80139469] [2023-12-25 17:26:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:42,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:42,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:42,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80139469] [2023-12-25 17:26:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80139469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:42,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:42,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 17:26:42,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707538703] [2023-12-25 17:26:42,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:42,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:26:42,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:42,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:26:42,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:26:42,549 INFO L87 Difference]: Start difference. First operand 225 states and 342 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:42,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:42,713 INFO L93 Difference]: Finished difference Result 1010 states and 1557 transitions. [2023-12-25 17:26:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 17:26:42,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-12-25 17:26:42,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:42,717 INFO L225 Difference]: With dead ends: 1010 [2023-12-25 17:26:42,717 INFO L226 Difference]: Without dead ends: 815 [2023-12-25 17:26:42,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-25 17:26:42,718 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1351 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:42,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 2019 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:26:42,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2023-12-25 17:26:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 229. [2023-12-25 17:26:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.5219298245614035) internal successors, (347), 228 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 347 transitions. [2023-12-25 17:26:42,734 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 347 transitions. Word has length 46 [2023-12-25 17:26:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:42,734 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 347 transitions. [2023-12-25 17:26:42,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 347 transitions. [2023-12-25 17:26:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 17:26:42,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:42,736 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] [2023-12-25 17:26:42,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 17:26:42,736 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:42,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1295958562, now seen corresponding path program 1 times [2023-12-25 17:26:42,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:42,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558569650] [2023-12-25 17:26:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:42,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:43,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558569650] [2023-12-25 17:26:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558569650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:43,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:43,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 17:26:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497241802] [2023-12-25 17:26:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:43,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:26:43,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:26:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:26:43,261 INFO L87 Difference]: Start difference. First operand 229 states and 347 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:43,506 INFO L93 Difference]: Finished difference Result 628 states and 960 transitions. [2023-12-25 17:26:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 17:26:43,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-12-25 17:26:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:43,508 INFO L225 Difference]: With dead ends: 628 [2023-12-25 17:26:43,508 INFO L226 Difference]: Without dead ends: 429 [2023-12-25 17:26:43,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-25 17:26:43,509 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 928 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:43,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 1614 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:26:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-12-25 17:26:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 234. [2023-12-25 17:26:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5107296137339057) internal successors, (352), 233 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 352 transitions. [2023-12-25 17:26:43,514 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 352 transitions. Word has length 46 [2023-12-25 17:26:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:43,514 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 352 transitions. [2023-12-25 17:26:43,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 352 transitions. [2023-12-25 17:26:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-25 17:26:43,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:43,515 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] [2023-12-25 17:26:43,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 17:26:43,515 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:43,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:43,515 INFO L85 PathProgramCache]: Analyzing trace with hash -859921618, now seen corresponding path program 1 times [2023-12-25 17:26:43,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:43,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569182728] [2023-12-25 17:26:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:43,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:43,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:43,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569182728] [2023-12-25 17:26:43,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569182728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:43,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:43,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-25 17:26:43,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758739244] [2023-12-25 17:26:43,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:43,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 17:26:43,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 17:26:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2023-12-25 17:26:43,999 INFO L87 Difference]: Start difference. First operand 234 states and 352 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:47,915 INFO L93 Difference]: Finished difference Result 1795 states and 2767 transitions. [2023-12-25 17:26:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-12-25 17:26:47,922 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-25 17:26:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:47,926 INFO L225 Difference]: With dead ends: 1795 [2023-12-25 17:26:47,926 INFO L226 Difference]: Without dead ends: 1596 [2023-12-25 17:26:47,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7275 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3550, Invalid=14272, Unknown=0, NotChecked=0, Total=17822 [2023-12-25 17:26:47,932 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 7446 mSDsluCounter, 7056 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7446 SdHoareTripleChecker+Valid, 7360 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:47,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7446 Valid, 7360 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 17:26:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-12-25 17:26:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 248. [2023-12-25 17:26:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.5101214574898785) internal successors, (373), 247 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 373 transitions. [2023-12-25 17:26:47,951 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 373 transitions. Word has length 47 [2023-12-25 17:26:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:47,951 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 373 transitions. [2023-12-25 17:26:47,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 373 transitions. [2023-12-25 17:26:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-25 17:26:47,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:47,952 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] [2023-12-25 17:26:47,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-25 17:26:47,952 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:47,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1252948628, now seen corresponding path program 1 times [2023-12-25 17:26:47,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:47,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463985656] [2023-12-25 17:26:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:48,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463985656] [2023-12-25 17:26:48,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463985656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:48,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:26:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529627786] [2023-12-25 17:26:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:48,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:26:48,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:26:48,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:26:48,221 INFO L87 Difference]: Start difference. First operand 248 states and 373 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:48,489 INFO L93 Difference]: Finished difference Result 479 states and 725 transitions. [2023-12-25 17:26:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:26:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-25 17:26:48,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:48,491 INFO L225 Difference]: With dead ends: 479 [2023-12-25 17:26:48,491 INFO L226 Difference]: Without dead ends: 266 [2023-12-25 17:26:48,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:26:48,491 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 451 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:48,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 551 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:26:48,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-25 17:26:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 251. [2023-12-25 17:26:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.504) internal successors, (376), 250 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 376 transitions. [2023-12-25 17:26:48,506 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 376 transitions. Word has length 47 [2023-12-25 17:26:48,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:48,506 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 376 transitions. [2023-12-25 17:26:48,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:48,506 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 376 transitions. [2023-12-25 17:26:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-25 17:26:48,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:48,506 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] [2023-12-25 17:26:48,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-25 17:26:48,507 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:48,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:48,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1253008210, now seen corresponding path program 1 times [2023-12-25 17:26:48,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:48,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832987085] [2023-12-25 17:26:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:48,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:49,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832987085] [2023-12-25 17:26:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832987085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:49,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-25 17:26:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689003430] [2023-12-25 17:26:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:49,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 17:26:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:49,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 17:26:49,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2023-12-25 17:26:49,026 INFO L87 Difference]: Start difference. First operand 251 states and 376 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:53,712 INFO L93 Difference]: Finished difference Result 2716 states and 4186 transitions. [2023-12-25 17:26:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2023-12-25 17:26:53,712 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-25 17:26:53,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:53,724 INFO L225 Difference]: With dead ends: 2716 [2023-12-25 17:26:53,724 INFO L226 Difference]: Without dead ends: 2500 [2023-12-25 17:26:53,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12554 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4922, Invalid=24148, Unknown=0, NotChecked=0, Total=29070 [2023-12-25 17:26:53,741 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 7312 mSDsluCounter, 9733 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7312 SdHoareTripleChecker+Valid, 10056 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:53,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7312 Valid, 10056 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 17:26:53,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2023-12-25 17:26:53,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 252. [2023-12-25 17:26:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.50199203187251) internal successors, (377), 251 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 377 transitions. [2023-12-25 17:26:53,772 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 377 transitions. Word has length 47 [2023-12-25 17:26:53,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:53,772 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 377 transitions. [2023-12-25 17:26:53,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:53,772 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 377 transitions. [2023-12-25 17:26:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-25 17:26:53,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:53,773 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] [2023-12-25 17:26:53,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-25 17:26:53,773 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:53,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:53,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1189338582, now seen corresponding path program 1 times [2023-12-25 17:26:53,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:53,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148114882] [2023-12-25 17:26:53,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:53,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:54,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:54,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148114882] [2023-12-25 17:26:54,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148114882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:54,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:26:54,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:26:54,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321201992] [2023-12-25 17:26:54,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:54,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:26:54,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:26:54,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:26:54,116 INFO L87 Difference]: Start difference. First operand 252 states and 377 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:54,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:54,253 INFO L93 Difference]: Finished difference Result 784 states and 1197 transitions. [2023-12-25 17:26:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:26:54,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-25 17:26:54,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:54,255 INFO L225 Difference]: With dead ends: 784 [2023-12-25 17:26:54,255 INFO L226 Difference]: Without dead ends: 567 [2023-12-25 17:26:54,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:26:54,256 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1039 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:54,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 957 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:26:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2023-12-25 17:26:54,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 257. [2023-12-25 17:26:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.4921875) internal successors, (382), 256 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 382 transitions. [2023-12-25 17:26:54,264 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 382 transitions. Word has length 47 [2023-12-25 17:26:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:54,265 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 382 transitions. [2023-12-25 17:26:54,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 382 transitions. [2023-12-25 17:26:54,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-25 17:26:54,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:54,265 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] [2023-12-25 17:26:54,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-25 17:26:54,266 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:54,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:54,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1594975071, now seen corresponding path program 1 times [2023-12-25 17:26:54,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:54,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074588787] [2023-12-25 17:26:54,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:54,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:56,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:26:56,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074588787] [2023-12-25 17:26:56,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074588787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:26:56,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800076866] [2023-12-25 17:26:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:56,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:26:56,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:26:56,862 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) [2023-12-25 17:26:56,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 17:26:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:26:57,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-25 17:26:57,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:26:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:26:57,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:26:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800076866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:26:57,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:26:57,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2023-12-25 17:26:57,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333568366] [2023-12-25 17:26:57,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:26:57,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:26:57,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:26:57,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:26:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-12-25 17:26:57,478 INFO L87 Difference]: Start difference. First operand 257 states and 382 transitions. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:26:58,189 INFO L93 Difference]: Finished difference Result 916 states and 1386 transitions. [2023-12-25 17:26:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 17:26:58,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2023-12-25 17:26:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:26:58,193 INFO L225 Difference]: With dead ends: 916 [2023-12-25 17:26:58,193 INFO L226 Difference]: Without dead ends: 699 [2023-12-25 17:26:58,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2023-12-25 17:26:58,194 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 880 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:26:58,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 1896 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 17:26:58,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-12-25 17:26:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 262. [2023-12-25 17:26:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.4865900383141764) internal successors, (388), 261 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 388 transitions. [2023-12-25 17:26:58,202 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 388 transitions. Word has length 141 [2023-12-25 17:26:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:26:58,202 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 388 transitions. [2023-12-25 17:26:58,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:26:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 388 transitions. [2023-12-25 17:26:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-25 17:26:58,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:26:58,203 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] [2023-12-25 17:26:58,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-25 17:26:58,411 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,SelfDestructingSolverStorable21 [2023-12-25 17:26:58,411 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:26:58,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:26:58,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1760663185, now seen corresponding path program 1 times [2023-12-25 17:26:58,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:26:58,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344384027] [2023-12-25 17:26:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:26:58,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:26:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:02,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:02,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344384027] [2023-12-25 17:27:02,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344384027] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:27:02,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18596954] [2023-12-25 17:27:02,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:02,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:27:02,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:27:02,742 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) [2023-12-25 17:27:02,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 17:27:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:03,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-25 17:27:03,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:27:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:03,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:27:03,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18596954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:03,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:27:03,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 23 [2023-12-25 17:27:03,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916041765] [2023-12-25 17:27:03,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:03,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:27:03,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:03,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:27:03,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-12-25 17:27:03,317 INFO L87 Difference]: Start difference. First operand 262 states and 388 transitions. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:04,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:04,066 INFO L93 Difference]: Finished difference Result 939 states and 1415 transitions. [2023-12-25 17:27:04,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 17:27:04,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2023-12-25 17:27:04,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:04,068 INFO L225 Difference]: With dead ends: 939 [2023-12-25 17:27:04,068 INFO L226 Difference]: Without dead ends: 717 [2023-12-25 17:27:04,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 17:27:04,069 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 850 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:04,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1893 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 17:27:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-12-25 17:27:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 267. [2023-12-25 17:27:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.481203007518797) internal successors, (394), 266 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 394 transitions. [2023-12-25 17:27:04,076 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 394 transitions. Word has length 142 [2023-12-25 17:27:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:04,076 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 394 transitions. [2023-12-25 17:27:04,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 394 transitions. [2023-12-25 17:27:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-25 17:27:04,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:04,077 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] [2023-12-25 17:27:04,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 17:27:04,278 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,SelfDestructingSolverStorable22 [2023-12-25 17:27:04,278 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:04,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash 333281289, now seen corresponding path program 1 times [2023-12-25 17:27:04,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:04,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743295602] [2023-12-25 17:27:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:04,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:05,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:05,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743295602] [2023-12-25 17:27:05,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743295602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:05,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:05,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:27:05,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380596524] [2023-12-25 17:27:05,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:05,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:27:05,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:27:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:27:05,258 INFO L87 Difference]: Start difference. First operand 267 states and 394 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:05,578 INFO L93 Difference]: Finished difference Result 713 states and 1070 transitions. [2023-12-25 17:27:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 17:27:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-25 17:27:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:05,580 INFO L225 Difference]: With dead ends: 713 [2023-12-25 17:27:05,580 INFO L226 Difference]: Without dead ends: 486 [2023-12-25 17:27:05,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:27:05,580 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 603 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:05,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 966 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 17:27:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-12-25 17:27:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 268. [2023-12-25 17:27:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.4794007490636705) internal successors, (395), 267 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 395 transitions. [2023-12-25 17:27:05,586 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 395 transitions. Word has length 143 [2023-12-25 17:27:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:05,587 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 395 transitions. [2023-12-25 17:27:05,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:05,587 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 395 transitions. [2023-12-25 17:27:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-25 17:27:05,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:05,588 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] [2023-12-25 17:27:05,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-25 17:27:05,590 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:05,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:05,590 INFO L85 PathProgramCache]: Analyzing trace with hash -437452277, now seen corresponding path program 1 times [2023-12-25 17:27:05,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:05,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609297747] [2023-12-25 17:27:05,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:05,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:07,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:07,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609297747] [2023-12-25 17:27:07,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609297747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:07,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:07,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:27:07,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136993492] [2023-12-25 17:27:07,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:07,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:27:07,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:27:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:27:07,181 INFO L87 Difference]: Start difference. First operand 268 states and 395 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:07,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:07,462 INFO L93 Difference]: Finished difference Result 716 states and 1071 transitions. [2023-12-25 17:27:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:27:07,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-25 17:27:07,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:07,464 INFO L225 Difference]: With dead ends: 716 [2023-12-25 17:27:07,464 INFO L226 Difference]: Without dead ends: 488 [2023-12-25 17:27:07,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:27:07,465 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 220 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:07,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1043 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:27:07,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-25 17:27:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 272. [2023-12-25 17:27:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.4760147601476015) internal successors, (400), 271 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 400 transitions. [2023-12-25 17:27:07,471 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 400 transitions. Word has length 143 [2023-12-25 17:27:07,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:07,471 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 400 transitions. [2023-12-25 17:27:07,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 400 transitions. [2023-12-25 17:27:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-25 17:27:07,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:07,474 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] [2023-12-25 17:27:07,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-25 17:27:07,474 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:07,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:07,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1552260719, now seen corresponding path program 1 times [2023-12-25 17:27:07,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:07,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781112727] [2023-12-25 17:27:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:07,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:11,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:11,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781112727] [2023-12-25 17:27:11,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781112727] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:27:11,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79577487] [2023-12-25 17:27:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:11,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:27:11,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:27:11,872 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) [2023-12-25 17:27:11,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 17:27:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:12,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 107 conjunts are in the unsatisfiable core [2023-12-25 17:27:12,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:27:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:13,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:27:13,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79577487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:13,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:27:13,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [16] total 33 [2023-12-25 17:27:13,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189125418] [2023-12-25 17:27:13,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:13,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 17:27:13,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 17:27:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 17:27:13,040 INFO L87 Difference]: Start difference. First operand 272 states and 400 transitions. Second operand has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:14,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:14,204 INFO L93 Difference]: Finished difference Result 985 states and 1531 transitions. [2023-12-25 17:27:14,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 17:27:14,204 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-25 17:27:14,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:14,206 INFO L225 Difference]: With dead ends: 985 [2023-12-25 17:27:14,206 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 17:27:14,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=342, Invalid=2208, Unknown=0, NotChecked=0, Total=2550 [2023-12-25 17:27:14,208 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 2539 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:14,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2539 Valid, 2536 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 17:27:14,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 17:27:14,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 340. [2023-12-25 17:27:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.471976401179941) internal successors, (499), 339 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:14,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 499 transitions. [2023-12-25 17:27:14,218 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 499 transitions. Word has length 143 [2023-12-25 17:27:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:14,218 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 499 transitions. [2023-12-25 17:27:14,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 499 transitions. [2023-12-25 17:27:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-25 17:27:14,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:14,219 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] [2023-12-25 17:27:14,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 17:27:14,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:27:14,420 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:14,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:14,420 INFO L85 PathProgramCache]: Analyzing trace with hash 409758253, now seen corresponding path program 1 times [2023-12-25 17:27:14,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:14,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664920891] [2023-12-25 17:27:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:14,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 17:27:17,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664920891] [2023-12-25 17:27:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664920891] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:27:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712448820] [2023-12-25 17:27:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:17,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:27:17,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:27:17,190 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) [2023-12-25 17:27:17,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 17:27:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:17,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-25 17:27:17,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:27:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:18,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:27:18,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712448820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:18,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:27:18,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 20 [2023-12-25 17:27:18,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135197827] [2023-12-25 17:27:18,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:18,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 17:27:18,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:18,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 17:27:18,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-12-25 17:27:18,031 INFO L87 Difference]: Start difference. First operand 340 states and 499 transitions. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:19,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:19,391 INFO L93 Difference]: Finished difference Result 1080 states and 1620 transitions. [2023-12-25 17:27:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 17:27:19,391 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-25 17:27:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:19,393 INFO L225 Difference]: With dead ends: 1080 [2023-12-25 17:27:19,393 INFO L226 Difference]: Without dead ends: 848 [2023-12-25 17:27:19,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 17:27:19,394 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1576 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:19,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 2132 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1743 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 17:27:19,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2023-12-25 17:27:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 343. [2023-12-25 17:27:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.4736842105263157) internal successors, (504), 342 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 504 transitions. [2023-12-25 17:27:19,404 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 504 transitions. Word has length 143 [2023-12-25 17:27:19,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:19,404 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 504 transitions. [2023-12-25 17:27:19,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 504 transitions. [2023-12-25 17:27:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-25 17:27:19,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:19,405 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] [2023-12-25 17:27:19,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-25 17:27:19,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-25 17:27:19,616 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:19,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:19,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1482910371, now seen corresponding path program 1 times [2023-12-25 17:27:19,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:19,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507779634] [2023-12-25 17:27:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:19,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:20,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:20,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507779634] [2023-12-25 17:27:20,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507779634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:20,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:20,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:27:20,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575775239] [2023-12-25 17:27:20,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:20,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:27:20,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:20,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:27:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:27:20,489 INFO L87 Difference]: Start difference. First operand 343 states and 504 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:20,653 INFO L93 Difference]: Finished difference Result 1011 states and 1533 transitions. [2023-12-25 17:27:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 17:27:20,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-25 17:27:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:20,655 INFO L225 Difference]: With dead ends: 1011 [2023-12-25 17:27:20,655 INFO L226 Difference]: Without dead ends: 758 [2023-12-25 17:27:20,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:27:20,656 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 934 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:20,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1790 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:27:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2023-12-25 17:27:20,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 359. [2023-12-25 17:27:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4720670391061452) internal successors, (527), 358 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 527 transitions. [2023-12-25 17:27:20,666 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 527 transitions. Word has length 143 [2023-12-25 17:27:20,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:20,667 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 527 transitions. [2023-12-25 17:27:20,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 527 transitions. [2023-12-25 17:27:20,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-25 17:27:20,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:20,668 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] [2023-12-25 17:27:20,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-25 17:27:20,668 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:20,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:20,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1271689911, now seen corresponding path program 1 times [2023-12-25 17:27:20,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:20,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957997392] [2023-12-25 17:27:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:20,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:21,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:21,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957997392] [2023-12-25 17:27:21,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957997392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:21,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:21,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:27:21,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073951856] [2023-12-25 17:27:21,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:21,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:27:21,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:21,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:27:21,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:27:21,568 INFO L87 Difference]: Start difference. First operand 359 states and 527 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:21,868 INFO L93 Difference]: Finished difference Result 846 states and 1263 transitions. [2023-12-25 17:27:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 17:27:21,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-25 17:27:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:21,870 INFO L225 Difference]: With dead ends: 846 [2023-12-25 17:27:21,870 INFO L226 Difference]: Without dead ends: 588 [2023-12-25 17:27:21,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:27:21,871 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 543 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:21,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 870 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:27:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-12-25 17:27:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 361. [2023-12-25 17:27:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.4694444444444446) internal successors, (529), 360 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 529 transitions. [2023-12-25 17:27:21,878 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 529 transitions. Word has length 143 [2023-12-25 17:27:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:21,878 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 529 transitions. [2023-12-25 17:27:21,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 529 transitions. [2023-12-25 17:27:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-25 17:27:21,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:21,879 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] [2023-12-25 17:27:21,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-25 17:27:21,879 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:21,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash -432656249, now seen corresponding path program 1 times [2023-12-25 17:27:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:21,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70813579] [2023-12-25 17:27:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:23,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:23,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70813579] [2023-12-25 17:27:23,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70813579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:23,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:23,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:27:23,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413482680] [2023-12-25 17:27:23,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:23,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:27:23,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:27:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:27:23,004 INFO L87 Difference]: Start difference. First operand 361 states and 529 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:23,297 INFO L93 Difference]: Finished difference Result 1024 states and 1523 transitions. [2023-12-25 17:27:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:27:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-25 17:27:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:23,299 INFO L225 Difference]: With dead ends: 1024 [2023-12-25 17:27:23,299 INFO L226 Difference]: Without dead ends: 764 [2023-12-25 17:27:23,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:27:23,300 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 419 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:23,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1575 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 17:27:23,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2023-12-25 17:27:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 359. [2023-12-25 17:27:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4664804469273742) internal successors, (525), 358 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 525 transitions. [2023-12-25 17:27:23,318 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 525 transitions. Word has length 143 [2023-12-25 17:27:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:23,318 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 525 transitions. [2023-12-25 17:27:23,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 525 transitions. [2023-12-25 17:27:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-25 17:27:23,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:23,319 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] [2023-12-25 17:27:23,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-25 17:27:23,319 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:23,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:23,320 INFO L85 PathProgramCache]: Analyzing trace with hash -563389613, now seen corresponding path program 1 times [2023-12-25 17:27:23,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:23,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299452239] [2023-12-25 17:27:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:23,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:24,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:24,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299452239] [2023-12-25 17:27:24,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299452239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:24,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:24,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 17:27:24,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633772356] [2023-12-25 17:27:24,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:24,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:27:24,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:27:24,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:27:24,401 INFO L87 Difference]: Start difference. First operand 359 states and 525 transitions. Second operand has 9 states, 9 states have (on average 16.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:24,730 INFO L93 Difference]: Finished difference Result 1340 states and 2000 transitions. [2023-12-25 17:27:24,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 17:27:24,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-25 17:27:24,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:24,733 INFO L225 Difference]: With dead ends: 1340 [2023-12-25 17:27:24,733 INFO L226 Difference]: Without dead ends: 1087 [2023-12-25 17:27:24,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-25 17:27:24,734 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 1373 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:24,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 2749 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:27:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-25 17:27:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 397. [2023-12-25 17:27:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.4772727272727273) internal successors, (585), 396 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 585 transitions. [2023-12-25 17:27:24,744 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 585 transitions. Word has length 144 [2023-12-25 17:27:24,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:24,744 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 585 transitions. [2023-12-25 17:27:24,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 585 transitions. [2023-12-25 17:27:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-25 17:27:24,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:24,745 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] [2023-12-25 17:27:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-25 17:27:24,745 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:24,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:24,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2011741533, now seen corresponding path program 1 times [2023-12-25 17:27:24,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:24,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984716029] [2023-12-25 17:27:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:24,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:25,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:25,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984716029] [2023-12-25 17:27:25,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984716029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:25,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:25,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:27:25,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099903640] [2023-12-25 17:27:25,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:25,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:27:25,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:25,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:27:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:27:25,506 INFO L87 Difference]: Start difference. First operand 397 states and 585 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:25,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:25,784 INFO L93 Difference]: Finished difference Result 965 states and 1448 transitions. [2023-12-25 17:27:25,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 17:27:25,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-25 17:27:25,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:25,786 INFO L225 Difference]: With dead ends: 965 [2023-12-25 17:27:25,786 INFO L226 Difference]: Without dead ends: 687 [2023-12-25 17:27:25,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:27:25,787 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 418 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:25,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 816 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:27:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-25 17:27:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 401. [2023-12-25 17:27:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.475) internal successors, (590), 400 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 590 transitions. [2023-12-25 17:27:25,794 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 590 transitions. Word has length 144 [2023-12-25 17:27:25,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:25,795 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 590 transitions. [2023-12-25 17:27:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 590 transitions. [2023-12-25 17:27:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-25 17:27:25,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:25,795 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] [2023-12-25 17:27:25,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-25 17:27:25,796 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:25,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1444192101, now seen corresponding path program 1 times [2023-12-25 17:27:25,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:25,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208135817] [2023-12-25 17:27:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:25,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:26,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:26,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208135817] [2023-12-25 17:27:26,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208135817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:26,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:26,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:27:26,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247819328] [2023-12-25 17:27:26,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:26,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:27:26,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:26,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:27:26,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:27:26,701 INFO L87 Difference]: Start difference. First operand 401 states and 590 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:27,000 INFO L93 Difference]: Finished difference Result 941 states and 1407 transitions. [2023-12-25 17:27:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:27:27,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-25 17:27:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:27,001 INFO L225 Difference]: With dead ends: 941 [2023-12-25 17:27:27,001 INFO L226 Difference]: Without dead ends: 659 [2023-12-25 17:27:27,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:27:27,002 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 416 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:27,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1064 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 17:27:27,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-25 17:27:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 399. [2023-12-25 17:27:27,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.4723618090452262) internal successors, (586), 398 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 586 transitions. [2023-12-25 17:27:27,010 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 586 transitions. Word has length 144 [2023-12-25 17:27:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:27,010 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 586 transitions. [2023-12-25 17:27:27,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 586 transitions. [2023-12-25 17:27:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-25 17:27:27,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:27,011 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] [2023-12-25 17:27:27,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-25 17:27:27,011 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:27,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:27,012 INFO L85 PathProgramCache]: Analyzing trace with hash 953903455, now seen corresponding path program 1 times [2023-12-25 17:27:27,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:27,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980328711] [2023-12-25 17:27:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 17:27:30,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:30,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980328711] [2023-12-25 17:27:30,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980328711] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:27:30,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025195481] [2023-12-25 17:27:30,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:30,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:27:30,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:27:30,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:27:30,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 17:27:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:31,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 105 conjunts are in the unsatisfiable core [2023-12-25 17:27:31,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:27:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:32,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:27:32,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025195481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:32,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:27:32,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [15] total 33 [2023-12-25 17:27:32,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662871336] [2023-12-25 17:27:32,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:32,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 17:27:32,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:32,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 17:27:32,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 17:27:32,322 INFO L87 Difference]: Start difference. First operand 399 states and 586 transitions. Second operand has 20 states, 20 states have (on average 7.2) internal successors, (144), 19 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:33,733 INFO L93 Difference]: Finished difference Result 1026 states and 1571 transitions. [2023-12-25 17:27:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-25 17:27:33,734 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 19 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-25 17:27:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:33,735 INFO L225 Difference]: With dead ends: 1026 [2023-12-25 17:27:33,735 INFO L226 Difference]: Without dead ends: 748 [2023-12-25 17:27:33,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=333, Invalid=2117, Unknown=0, NotChecked=0, Total=2450 [2023-12-25 17:27:33,738 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 2405 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:33,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 2279 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 17:27:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-12-25 17:27:33,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 454. [2023-12-25 17:27:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.4856512141280354) internal successors, (673), 453 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 673 transitions. [2023-12-25 17:27:33,747 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 673 transitions. Word has length 144 [2023-12-25 17:27:33,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:33,747 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 673 transitions. [2023-12-25 17:27:33,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 19 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 673 transitions. [2023-12-25 17:27:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-25 17:27:33,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:33,748 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] [2023-12-25 17:27:33,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 17:27:33,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-25 17:27:33,972 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:33,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:33,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1792937117, now seen corresponding path program 1 times [2023-12-25 17:27:33,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:33,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138836982] [2023-12-25 17:27:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:33,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 17:27:36,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:36,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138836982] [2023-12-25 17:27:36,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138836982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:27:36,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866816216] [2023-12-25 17:27:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:36,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:27:36,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:27:36,970 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:27:36,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 17:27:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:37,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-25 17:27:37,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:27:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:38,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:27:38,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866816216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:38,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:27:38,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 27 [2023-12-25 17:27:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825241256] [2023-12-25 17:27:38,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:38,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 17:27:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:38,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 17:27:38,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2023-12-25 17:27:38,584 INFO L87 Difference]: Start difference. First operand 454 states and 673 transitions. Second operand has 18 states, 18 states have (on average 8.0) internal successors, (144), 17 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:46,252 INFO L93 Difference]: Finished difference Result 2866 states and 4343 transitions. [2023-12-25 17:27:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-25 17:27:46,253 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.0) internal successors, (144), 17 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-25 17:27:46,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:46,255 INFO L225 Difference]: With dead ends: 2866 [2023-12-25 17:27:46,255 INFO L226 Difference]: Without dead ends: 2611 [2023-12-25 17:27:46,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3866 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1706, Invalid=10504, Unknown=0, NotChecked=0, Total=12210 [2023-12-25 17:27:46,279 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 5366 mSDsluCounter, 5154 mSDsCounter, 0 mSdLazyCounter, 4873 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5366 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 4889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:46,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5366 Valid, 5599 Invalid, 4889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4873 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-25 17:27:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2023-12-25 17:27:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 488. [2023-12-25 17:27:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.4989733059548254) internal successors, (730), 487 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 730 transitions. [2023-12-25 17:27:46,293 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 730 transitions. Word has length 144 [2023-12-25 17:27:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:46,293 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 730 transitions. [2023-12-25 17:27:46,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.0) internal successors, (144), 17 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 730 transitions. [2023-12-25 17:27:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-25 17:27:46,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:46,294 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] [2023-12-25 17:27:46,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 17:27:46,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:27:46,504 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:46,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash 693092573, now seen corresponding path program 1 times [2023-12-25 17:27:46,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:46,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491707521] [2023-12-25 17:27:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:46,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:46,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:46,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491707521] [2023-12-25 17:27:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491707521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:46,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:46,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:27:46,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684095013] [2023-12-25 17:27:46,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:46,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:27:46,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:46,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:27:46,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:27:46,795 INFO L87 Difference]: Start difference. First operand 488 states and 730 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:47,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:47,023 INFO L93 Difference]: Finished difference Result 1681 states and 2528 transitions. [2023-12-25 17:27:47,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 17:27:47,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-25 17:27:47,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:47,025 INFO L225 Difference]: With dead ends: 1681 [2023-12-25 17:27:47,025 INFO L226 Difference]: Without dead ends: 865 [2023-12-25 17:27:47,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:27:47,026 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 610 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:47,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 1890 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:27:47,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2023-12-25 17:27:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 502. [2023-12-25 17:27:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 1.4850299401197604) internal successors, (744), 501 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 744 transitions. [2023-12-25 17:27:47,055 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 744 transitions. Word has length 144 [2023-12-25 17:27:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:47,055 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 744 transitions. [2023-12-25 17:27:47,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 744 transitions. [2023-12-25 17:27:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-25 17:27:47,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:47,059 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] [2023-12-25 17:27:47,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-25 17:27:47,059 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:47,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1580315419, now seen corresponding path program 1 times [2023-12-25 17:27:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:47,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204521036] [2023-12-25 17:27:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:47,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 17:27:49,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204521036] [2023-12-25 17:27:49,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204521036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:27:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065267698] [2023-12-25 17:27:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:49,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:27:49,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:27:49,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:27:49,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 17:27:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:50,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-25 17:27:50,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:27:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:50,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:27:50,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065267698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:50,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:27:50,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 20 [2023-12-25 17:27:50,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476301463] [2023-12-25 17:27:50,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:50,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 17:27:50,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 17:27:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-12-25 17:27:50,430 INFO L87 Difference]: Start difference. First operand 502 states and 744 transitions. Second operand has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:51,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:51,120 INFO L93 Difference]: Finished difference Result 1082 states and 1650 transitions. [2023-12-25 17:27:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 17:27:51,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-25 17:27:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:51,122 INFO L225 Difference]: With dead ends: 1082 [2023-12-25 17:27:51,122 INFO L226 Difference]: Without dead ends: 750 [2023-12-25 17:27:51,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2023-12-25 17:27:51,123 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 908 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:51,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1420 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 17:27:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-12-25 17:27:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 500. [2023-12-25 17:27:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.4829659318637274) internal successors, (740), 499 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 740 transitions. [2023-12-25 17:27:51,131 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 740 transitions. Word has length 144 [2023-12-25 17:27:51,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:51,131 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 740 transitions. [2023-12-25 17:27:51,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:51,132 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 740 transitions. [2023-12-25 17:27:51,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-25 17:27:51,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:51,132 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] [2023-12-25 17:27:51,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 17:27:51,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:27:51,340 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:51,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1639440951, now seen corresponding path program 1 times [2023-12-25 17:27:51,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:51,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542498696] [2023-12-25 17:27:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:51,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:51,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:51,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542498696] [2023-12-25 17:27:51,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542498696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:51,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:51,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:27:51,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145987311] [2023-12-25 17:27:51,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:51,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:27:51,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:51,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:27:51,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:27:51,640 INFO L87 Difference]: Start difference. First operand 500 states and 740 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:51,926 INFO L93 Difference]: Finished difference Result 1134 states and 1700 transitions. [2023-12-25 17:27:51,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:27:51,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2023-12-25 17:27:51,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:51,927 INFO L225 Difference]: With dead ends: 1134 [2023-12-25 17:27:51,927 INFO L226 Difference]: Without dead ends: 819 [2023-12-25 17:27:51,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:27:51,929 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 521 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:51,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 996 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 17:27:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2023-12-25 17:27:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 504. [2023-12-25 17:27:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.4791252485089463) internal successors, (744), 503 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 744 transitions. [2023-12-25 17:27:51,939 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 744 transitions. Word has length 145 [2023-12-25 17:27:51,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:51,939 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 744 transitions. [2023-12-25 17:27:51,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 744 transitions. [2023-12-25 17:27:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-25 17:27:51,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:51,940 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] [2023-12-25 17:27:51,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-25 17:27:51,940 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:51,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash -960168697, now seen corresponding path program 1 times [2023-12-25 17:27:51,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:51,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561714350] [2023-12-25 17:27:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:51,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:55,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:55,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561714350] [2023-12-25 17:27:55,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561714350] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:27:55,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416784541] [2023-12-25 17:27:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:55,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:27:55,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:27:55,076 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:27:55,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 17:27:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:55,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-25 17:27:55,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:27:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:55,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:27:55,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416784541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:55,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:27:55,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [12] total 26 [2023-12-25 17:27:55,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169916698] [2023-12-25 17:27:55,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:55,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 17:27:55,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:55,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 17:27:55,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2023-12-25 17:27:55,829 INFO L87 Difference]: Start difference. First operand 504 states and 744 transitions. Second operand has 16 states, 16 states have (on average 9.0625) internal successors, (145), 15 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:57,166 INFO L93 Difference]: Finished difference Result 1692 states and 2530 transitions. [2023-12-25 17:27:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 17:27:57,166 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.0625) internal successors, (145), 15 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2023-12-25 17:27:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:57,168 INFO L225 Difference]: With dead ends: 1692 [2023-12-25 17:27:57,168 INFO L226 Difference]: Without dead ends: 1373 [2023-12-25 17:27:57,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 17:27:57,169 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 2474 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:57,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 2814 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 17:27:57,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2023-12-25 17:27:57,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 505. [2023-12-25 17:27:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.4781746031746033) internal successors, (745), 504 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 745 transitions. [2023-12-25 17:27:57,179 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 745 transitions. Word has length 145 [2023-12-25 17:27:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:57,179 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 745 transitions. [2023-12-25 17:27:57,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.0625) internal successors, (145), 15 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 745 transitions. [2023-12-25 17:27:57,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-25 17:27:57,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:57,180 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] [2023-12-25 17:27:57,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 17:27:57,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-25 17:27:57,385 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:57,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash -204960357, now seen corresponding path program 1 times [2023-12-25 17:27:57,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:57,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449763140] [2023-12-25 17:27:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:57,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:27:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:27:58,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:27:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449763140] [2023-12-25 17:27:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449763140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:27:58,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:27:58,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 17:27:58,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296218753] [2023-12-25 17:27:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:27:58,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:27:58,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:27:58,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:27:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:27:58,540 INFO L87 Difference]: Start difference. First operand 505 states and 745 transitions. Second operand has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:27:58,862 INFO L93 Difference]: Finished difference Result 1592 states and 2370 transitions. [2023-12-25 17:27:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 17:27:58,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2023-12-25 17:27:58,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:27:58,864 INFO L225 Difference]: With dead ends: 1592 [2023-12-25 17:27:58,864 INFO L226 Difference]: Without dead ends: 1273 [2023-12-25 17:27:58,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-25 17:27:58,875 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 1391 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:27:58,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 2738 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:27:58,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2023-12-25 17:27:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 583. [2023-12-25 17:27:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 1.493127147766323) internal successors, (869), 582 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 869 transitions. [2023-12-25 17:27:58,894 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 869 transitions. Word has length 145 [2023-12-25 17:27:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:27:58,894 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 869 transitions. [2023-12-25 17:27:58,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:27:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 869 transitions. [2023-12-25 17:27:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-25 17:27:58,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:27:58,895 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] [2023-12-25 17:27:58,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-25 17:27:58,895 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:27:58,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:27:58,896 INFO L85 PathProgramCache]: Analyzing trace with hash 296270079, now seen corresponding path program 1 times [2023-12-25 17:27:58,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:27:58,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989923320] [2023-12-25 17:27:58,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:27:58,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:27:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:00,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:00,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989923320] [2023-12-25 17:28:00,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989923320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:28:00,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:28:00,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 17:28:00,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176471013] [2023-12-25 17:28:00,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:28:00,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 17:28:00,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:00,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 17:28:00,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:28:00,312 INFO L87 Difference]: Start difference. First operand 583 states and 869 transitions. Second operand has 11 states, 11 states have (on average 13.181818181818182) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:28:00,982 INFO L93 Difference]: Finished difference Result 2082 states and 3091 transitions. [2023-12-25 17:28:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 17:28:00,982 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.181818181818182) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2023-12-25 17:28:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:28:00,985 INFO L225 Difference]: With dead ends: 2082 [2023-12-25 17:28:00,985 INFO L226 Difference]: Without dead ends: 1746 [2023-12-25 17:28:00,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2023-12-25 17:28:00,986 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 2021 mSDsluCounter, 3601 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 4166 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:28:00,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2021 Valid, 4166 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 17:28:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2023-12-25 17:28:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 585. [2023-12-25 17:28:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.4914383561643836) internal successors, (871), 584 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 871 transitions. [2023-12-25 17:28:00,998 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 871 transitions. Word has length 145 [2023-12-25 17:28:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:28:00,999 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 871 transitions. [2023-12-25 17:28:00,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.181818181818182) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 871 transitions. [2023-12-25 17:28:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-25 17:28:01,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:01,000 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] [2023-12-25 17:28:01,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-25 17:28:01,000 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:01,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:01,000 INFO L85 PathProgramCache]: Analyzing trace with hash -418984899, now seen corresponding path program 1 times [2023-12-25 17:28:01,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:01,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832003743] [2023-12-25 17:28:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:01,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:06,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:06,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832003743] [2023-12-25 17:28:06,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832003743] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:28:06,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346534409] [2023-12-25 17:28:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:06,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:28:06,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:28:06,953 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:28:06,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 17:28:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:07,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-25 17:28:07,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:28:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:07,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:28:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:09,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346534409] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:28:09,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:28:09,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 54 [2023-12-25 17:28:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287304092] [2023-12-25 17:28:09,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:28:09,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-25 17:28:09,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:09,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-25 17:28:09,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=2624, Unknown=0, NotChecked=0, Total=2970 [2023-12-25 17:28:09,761 INFO L87 Difference]: Start difference. First operand 585 states and 871 transitions. Second operand has 55 states, 55 states have (on average 7.0) internal successors, (385), 54 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:29,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:28:29,864 INFO L93 Difference]: Finished difference Result 9146 states and 14091 transitions. [2023-12-25 17:28:29,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2023-12-25 17:28:29,864 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 7.0) internal successors, (385), 54 states have internal predecessors, (385), 0 states have call successors, (0), 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 145 [2023-12-25 17:28:29,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:28:29,874 INFO L225 Difference]: With dead ends: 9146 [2023-12-25 17:28:29,874 INFO L226 Difference]: Without dead ends: 8827 [2023-12-25 17:28:29,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19843 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=7248, Invalid=44508, Unknown=0, NotChecked=0, Total=51756 [2023-12-25 17:28:29,881 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 15045 mSDsluCounter, 21206 mSDsCounter, 0 mSdLazyCounter, 15685 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15045 SdHoareTripleChecker+Valid, 22064 SdHoareTripleChecker+Invalid, 15730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 15685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:28:29,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15045 Valid, 22064 Invalid, 15730 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 15685 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-25 17:28:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8827 states. [2023-12-25 17:28:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8827 to 937. [2023-12-25 17:28:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 1.5096153846153846) internal successors, (1413), 936 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1413 transitions. [2023-12-25 17:28:29,929 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1413 transitions. Word has length 145 [2023-12-25 17:28:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:28:29,929 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1413 transitions. [2023-12-25 17:28:29,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 7.0) internal successors, (385), 54 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:28:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1413 transitions. [2023-12-25 17:28:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-25 17:28:29,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:28:29,931 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] [2023-12-25 17:28:29,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 17:28:30,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:28:30,140 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:28:30,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:28:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1954475293, now seen corresponding path program 1 times [2023-12-25 17:28:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:28:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675673887] [2023-12-25 17:28:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:30,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:28:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 17:28:32,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:28:32,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675673887] [2023-12-25 17:28:32,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675673887] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:28:32,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397038492] [2023-12-25 17:28:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:28:32,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:28:32,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:28:32,274 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:28:32,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 17:28:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:28:32,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-25 17:28:32,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:28:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:33,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:28:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:28:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397038492] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:28:34,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:28:34,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 20] total 51 [2023-12-25 17:28:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556969687] [2023-12-25 17:28:34,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:28:34,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-25 17:28:34,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:28:34,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-25 17:28:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 17:28:34,963 INFO L87 Difference]: Start difference. First operand 937 states and 1413 transitions. Second operand has 52 states, 52 states have (on average 7.403846153846154) internal successors, (385), 51 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:00,751 INFO L93 Difference]: Finished difference Result 14726 states and 22805 transitions. [2023-12-25 17:29:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 373 states. [2023-12-25 17:29:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 7.403846153846154) internal successors, (385), 51 states have internal predecessors, (385), 0 states have call successors, (0), 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 145 [2023-12-25 17:29:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:00,771 INFO L225 Difference]: With dead ends: 14726 [2023-12-25 17:29:00,771 INFO L226 Difference]: Without dead ends: 14403 [2023-12-25 17:29:00,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 420 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78717 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=19480, Invalid=158182, Unknown=0, NotChecked=0, Total=177662 [2023-12-25 17:29:00,786 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 37751 mSDsluCounter, 20093 mSDsCounter, 0 mSdLazyCounter, 14677 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37751 SdHoareTripleChecker+Valid, 20964 SdHoareTripleChecker+Invalid, 14807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 14677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:00,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37751 Valid, 20964 Invalid, 14807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 14677 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-25 17:29:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14403 states. [2023-12-25 17:29:00,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14403 to 1515. [2023-12-25 17:29:00,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1514 states have (on average 1.5224570673712021) internal successors, (2305), 1514 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2305 transitions. [2023-12-25 17:29:00,861 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2305 transitions. Word has length 145 [2023-12-25 17:29:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:00,862 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2305 transitions. [2023-12-25 17:29:00,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 7.403846153846154) internal successors, (385), 51 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:00,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2305 transitions. [2023-12-25 17:29:00,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-25 17:29:00,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:00,864 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] [2023-12-25 17:29:00,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 17:29:01,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-25 17:29:01,073 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:01,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:01,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1359341697, now seen corresponding path program 1 times [2023-12-25 17:29:01,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:01,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072552758] [2023-12-25 17:29:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:01,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:05,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:29:05,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072552758] [2023-12-25 17:29:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072552758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:29:05,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474262416] [2023-12-25 17:29:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:05,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:29:05,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:29:05,840 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:29:05,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 17:29:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:29:06,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 145 conjunts are in the unsatisfiable core [2023-12-25 17:29:06,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:29:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:07,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:29:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:29:08,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474262416] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:29:08,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:29:08,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 21] total 58 [2023-12-25 17:29:08,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181651972] [2023-12-25 17:29:08,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:29:08,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-25 17:29:08,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:29:08,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-25 17:29:08,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=3118, Unknown=0, NotChecked=0, Total=3422 [2023-12-25 17:29:08,897 INFO L87 Difference]: Start difference. First operand 1515 states and 2305 transitions. Second operand has 59 states, 59 states have (on average 6.711864406779661) internal successors, (396), 58 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:29:57,740 INFO L93 Difference]: Finished difference Result 23773 states and 36668 transitions. [2023-12-25 17:29:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 416 states. [2023-12-25 17:29:57,741 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.711864406779661) internal successors, (396), 58 states have internal predecessors, (396), 0 states have call successors, (0), 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 146 [2023-12-25 17:29:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:29:57,760 INFO L225 Difference]: With dead ends: 23773 [2023-12-25 17:29:57,760 INFO L226 Difference]: Without dead ends: 23145 [2023-12-25 17:29:57,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99409 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=24480, Invalid=197832, Unknown=0, NotChecked=0, Total=222312 [2023-12-25 17:29:57,773 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 23307 mSDsluCounter, 34989 mSDsCounter, 0 mSdLazyCounter, 26351 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23307 SdHoareTripleChecker+Valid, 35978 SdHoareTripleChecker+Invalid, 26456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 26351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:29:57,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23307 Valid, 35978 Invalid, 26456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 26351 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-12-25 17:29:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23145 states. [2023-12-25 17:29:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23145 to 1908. [2023-12-25 17:29:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 1.5112742527530152) internal successors, (2882), 1907 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2882 transitions. [2023-12-25 17:29:57,906 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2882 transitions. Word has length 146 [2023-12-25 17:29:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:29:57,907 INFO L495 AbstractCegarLoop]: Abstraction has 1908 states and 2882 transitions. [2023-12-25 17:29:57,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.711864406779661) internal successors, (396), 58 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:29:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2882 transitions. [2023-12-25 17:29:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 17:29:57,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:29:57,909 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] [2023-12-25 17:29:57,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 17:29:58,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-25 17:29:58,136 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:29:58,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:29:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash 43968873, now seen corresponding path program 1 times [2023-12-25 17:29:58,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:29:58,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880689942] [2023-12-25 17:29:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:29:58,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:29:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 17:30:00,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880689942] [2023-12-25 17:30:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880689942] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17891707] [2023-12-25 17:30:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:00,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:00,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:00,519 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:30:00,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 17:30:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:00,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 17:30:00,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-25 17:30:01,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-25 17:30:02,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17891707] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:30:02,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:30:02,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 18 [2023-12-25 17:30:02,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525079443] [2023-12-25 17:30:02,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:30:02,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 17:30:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:02,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 17:30:02,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-25 17:30:02,112 INFO L87 Difference]: Start difference. First operand 1908 states and 2882 transitions. Second operand has 19 states, 19 states have (on average 21.105263157894736) internal successors, (401), 18 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:03,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:03,494 INFO L93 Difference]: Finished difference Result 4051 states and 6158 transitions. [2023-12-25 17:30:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 17:30:03,495 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 21.105263157894736) internal successors, (401), 18 states have internal predecessors, (401), 0 states have call successors, (0), 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 147 [2023-12-25 17:30:03,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:03,498 INFO L225 Difference]: With dead ends: 4051 [2023-12-25 17:30:03,498 INFO L226 Difference]: Without dead ends: 3411 [2023-12-25 17:30:03,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 17:30:03,505 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 3001 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3001 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:03,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3001 Valid, 2422 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 17:30:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2023-12-25 17:30:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 2823. [2023-12-25 17:30:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2822 states have (on average 1.5102763997165132) internal successors, (4262), 2822 states have internal predecessors, (4262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 4262 transitions. [2023-12-25 17:30:03,597 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 4262 transitions. Word has length 147 [2023-12-25 17:30:03,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:03,597 INFO L495 AbstractCegarLoop]: Abstraction has 2823 states and 4262 transitions. [2023-12-25 17:30:03,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.105263157894736) internal successors, (401), 18 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:03,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 4262 transitions. [2023-12-25 17:30:03,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 17:30:03,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:03,600 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] [2023-12-25 17:30:03,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 17:30:03,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-12-25 17:30:03,809 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:03,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:03,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1057333657, now seen corresponding path program 1 times [2023-12-25 17:30:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006732196] [2023-12-25 17:30:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:04,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:04,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006732196] [2023-12-25 17:30:04,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006732196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:30:04,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:30:04,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:30:04,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991818409] [2023-12-25 17:30:04,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:04,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:04,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:04,186 INFO L87 Difference]: Start difference. First operand 2823 states and 4262 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:04,397 INFO L93 Difference]: Finished difference Result 4520 states and 6804 transitions. [2023-12-25 17:30:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:30:04,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-25 17:30:04,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:04,400 INFO L225 Difference]: With dead ends: 4520 [2023-12-25 17:30:04,400 INFO L226 Difference]: Without dead ends: 2937 [2023-12-25 17:30:04,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:04,401 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 232 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:04,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 494 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:30:04,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2023-12-25 17:30:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2899. [2023-12-25 17:30:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2898 states have (on average 1.4968944099378882) internal successors, (4338), 2898 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4338 transitions. [2023-12-25 17:30:04,487 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4338 transitions. Word has length 147 [2023-12-25 17:30:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:04,487 INFO L495 AbstractCegarLoop]: Abstraction has 2899 states and 4338 transitions. [2023-12-25 17:30:04,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4338 transitions. [2023-12-25 17:30:04,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 17:30:04,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:04,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:04,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-25 17:30:04,490 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:04,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:04,490 INFO L85 PathProgramCache]: Analyzing trace with hash 553707251, now seen corresponding path program 1 times [2023-12-25 17:30:04,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:04,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613089325] [2023-12-25 17:30:04,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:04,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:09,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613089325] [2023-12-25 17:30:09,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613089325] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755430224] [2023-12-25 17:30:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:09,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:09,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:09,769 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:30:09,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 17:30:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:10,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 160 conjunts are in the unsatisfiable core [2023-12-25 17:30:10,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:11,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:12,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755430224] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:30:12,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:30:12,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 19] total 52 [2023-12-25 17:30:12,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129985557] [2023-12-25 17:30:12,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:30:12,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-25 17:30:12,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-25 17:30:12,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=2368, Unknown=0, NotChecked=0, Total=2756 [2023-12-25 17:30:12,850 INFO L87 Difference]: Start difference. First operand 2899 states and 4338 transitions. Second operand has 53 states, 53 states have (on average 7.943396226415095) internal successors, (421), 52 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:20,622 INFO L93 Difference]: Finished difference Result 8684 states and 13221 transitions. [2023-12-25 17:30:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-25 17:30:20,622 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.943396226415095) internal successors, (421), 52 states have internal predecessors, (421), 0 states have call successors, (0), 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 147 [2023-12-25 17:30:20,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:20,629 INFO L225 Difference]: With dead ends: 8684 [2023-12-25 17:30:20,629 INFO L226 Difference]: Without dead ends: 8061 [2023-12-25 17:30:20,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4490 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2574, Invalid=12926, Unknown=0, NotChecked=0, Total=15500 [2023-12-25 17:30:20,631 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 9190 mSDsluCounter, 13458 mSDsCounter, 0 mSdLazyCounter, 9722 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9190 SdHoareTripleChecker+Valid, 14101 SdHoareTripleChecker+Invalid, 9750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 9722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:20,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9190 Valid, 14101 Invalid, 9750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 9722 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-25 17:30:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8061 states. [2023-12-25 17:30:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8061 to 2958. [2023-12-25 17:30:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2957 states have (on average 1.491038214406493) internal successors, (4409), 2957 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 4409 transitions. [2023-12-25 17:30:20,819 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 4409 transitions. Word has length 147 [2023-12-25 17:30:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:20,820 INFO L495 AbstractCegarLoop]: Abstraction has 2958 states and 4409 transitions. [2023-12-25 17:30:20,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.943396226415095) internal successors, (421), 52 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 4409 transitions. [2023-12-25 17:30:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 17:30:20,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:20,823 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] [2023-12-25 17:30:20,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 17:30:21,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-25 17:30:21,032 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:21,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:21,033 INFO L85 PathProgramCache]: Analyzing trace with hash 95432523, now seen corresponding path program 1 times [2023-12-25 17:30:21,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:21,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149255909] [2023-12-25 17:30:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:21,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:21,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149255909] [2023-12-25 17:30:21,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149255909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:30:21,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:30:21,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:30:21,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749586553] [2023-12-25 17:30:21,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:21,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:21,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:21,405 INFO L87 Difference]: Start difference. First operand 2958 states and 4409 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:21,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:21,610 INFO L93 Difference]: Finished difference Result 4410 states and 6560 transitions. [2023-12-25 17:30:21,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:30:21,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-25 17:30:21,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:21,614 INFO L225 Difference]: With dead ends: 4410 [2023-12-25 17:30:21,614 INFO L226 Difference]: Without dead ends: 3011 [2023-12-25 17:30:21,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:21,616 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 220 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:21,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 494 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:30:21,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2023-12-25 17:30:21,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2992. [2023-12-25 17:30:21,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2991 states have (on average 1.485456369107322) internal successors, (4443), 2991 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 4443 transitions. [2023-12-25 17:30:21,816 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 4443 transitions. Word has length 147 [2023-12-25 17:30:21,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:21,816 INFO L495 AbstractCegarLoop]: Abstraction has 2992 states and 4443 transitions. [2023-12-25 17:30:21,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:21,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 4443 transitions. [2023-12-25 17:30:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 17:30:21,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:21,834 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] [2023-12-25 17:30:21,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-25 17:30:21,835 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:21,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1888784359, now seen corresponding path program 1 times [2023-12-25 17:30:21,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:21,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785273594] [2023-12-25 17:30:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:21,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:22,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:22,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785273594] [2023-12-25 17:30:22,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785273594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:30:22,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:30:22,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:30:22,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356213543] [2023-12-25 17:30:22,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:22,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:22,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:22,152 INFO L87 Difference]: Start difference. First operand 2992 states and 4443 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:22,360 INFO L93 Difference]: Finished difference Result 4641 states and 6863 transitions. [2023-12-25 17:30:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:30:22,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-25 17:30:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:22,364 INFO L225 Difference]: With dead ends: 4641 [2023-12-25 17:30:22,364 INFO L226 Difference]: Without dead ends: 3112 [2023-12-25 17:30:22,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:22,365 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 227 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:22,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 493 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:30:22,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2023-12-25 17:30:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 3072. [2023-12-25 17:30:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.4728101595571474) internal successors, (4523), 3071 states have internal predecessors, (4523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4523 transitions. [2023-12-25 17:30:22,456 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4523 transitions. Word has length 147 [2023-12-25 17:30:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:22,456 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4523 transitions. [2023-12-25 17:30:22,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4523 transitions. [2023-12-25 17:30:22,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 17:30:22,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:22,459 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] [2023-12-25 17:30:22,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-25 17:30:22,459 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:22,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash 960813621, now seen corresponding path program 1 times [2023-12-25 17:30:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:22,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176831329] [2023-12-25 17:30:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:22,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:22,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176831329] [2023-12-25 17:30:22,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176831329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:30:22,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:30:22,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:30:22,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739778859] [2023-12-25 17:30:22,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:22,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:22,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:22,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:22,773 INFO L87 Difference]: Start difference. First operand 3072 states and 4523 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:22,996 INFO L93 Difference]: Finished difference Result 5046 states and 7439 transitions. [2023-12-25 17:30:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:30:22,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-25 17:30:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:22,999 INFO L225 Difference]: With dead ends: 5046 [2023-12-25 17:30:22,999 INFO L226 Difference]: Without dead ends: 3141 [2023-12-25 17:30:23,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:23,001 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 239 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:23,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 493 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:30:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2023-12-25 17:30:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 3118. [2023-12-25 17:30:23,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 3117 states have (on average 1.465832531280077) internal successors, (4569), 3117 states have internal predecessors, (4569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4569 transitions. [2023-12-25 17:30:23,194 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4569 transitions. Word has length 147 [2023-12-25 17:30:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:23,194 INFO L495 AbstractCegarLoop]: Abstraction has 3118 states and 4569 transitions. [2023-12-25 17:30:23,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4569 transitions. [2023-12-25 17:30:23,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 17:30:23,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:23,197 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] [2023-12-25 17:30:23,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-25 17:30:23,197 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:23,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash 376103455, now seen corresponding path program 1 times [2023-12-25 17:30:23,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:23,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915080352] [2023-12-25 17:30:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:23,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915080352] [2023-12-25 17:30:23,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915080352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:30:23,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:30:23,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:30:23,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072848366] [2023-12-25 17:30:23,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:23,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:23,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:23,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:23,497 INFO L87 Difference]: Start difference. First operand 3118 states and 4569 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:23,708 INFO L93 Difference]: Finished difference Result 4528 states and 6629 transitions. [2023-12-25 17:30:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:30:23,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-25 17:30:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:23,712 INFO L225 Difference]: With dead ends: 4528 [2023-12-25 17:30:23,712 INFO L226 Difference]: Without dead ends: 3184 [2023-12-25 17:30:23,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:23,715 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 244 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:23,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 494 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:30:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2023-12-25 17:30:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 3162. [2023-12-25 17:30:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3162 states, 3161 states have (on average 1.4593483074976272) internal successors, (4613), 3161 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 4613 transitions. [2023-12-25 17:30:23,807 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 4613 transitions. Word has length 147 [2023-12-25 17:30:23,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:23,807 INFO L495 AbstractCegarLoop]: Abstraction has 3162 states and 4613 transitions. [2023-12-25 17:30:23,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 4613 transitions. [2023-12-25 17:30:23,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 17:30:23,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:23,810 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] [2023-12-25 17:30:23,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-25 17:30:23,810 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:23,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:23,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1363417325, now seen corresponding path program 1 times [2023-12-25 17:30:23,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:23,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625060366] [2023-12-25 17:30:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:23,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:24,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:24,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625060366] [2023-12-25 17:30:24,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625060366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:30:24,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:30:24,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:30:24,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479166568] [2023-12-25 17:30:24,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:24,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:24,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:24,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:24,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:24,118 INFO L87 Difference]: Start difference. First operand 3162 states and 4613 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:24,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:24,373 INFO L93 Difference]: Finished difference Result 4754 states and 6923 transitions. [2023-12-25 17:30:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:30:24,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-25 17:30:24,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:24,375 INFO L225 Difference]: With dead ends: 4754 [2023-12-25 17:30:24,375 INFO L226 Difference]: Without dead ends: 3243 [2023-12-25 17:30:24,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:24,377 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 251 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:24,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 493 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:30:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2023-12-25 17:30:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3216. [2023-12-25 17:30:24,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 3215 states have (on average 1.451632970451011) internal successors, (4667), 3215 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 4667 transitions. [2023-12-25 17:30:24,470 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 4667 transitions. Word has length 147 [2023-12-25 17:30:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:24,470 INFO L495 AbstractCegarLoop]: Abstraction has 3216 states and 4667 transitions. [2023-12-25 17:30:24,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:24,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 4667 transitions. [2023-12-25 17:30:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 17:30:24,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:24,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:24,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-25 17:30:24,473 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:24,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:24,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1440930097, now seen corresponding path program 1 times [2023-12-25 17:30:24,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:24,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036569558] [2023-12-25 17:30:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:24,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:31,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:31,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036569558] [2023-12-25 17:30:31,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036569558] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:31,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119829210] [2023-12-25 17:30:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:31,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:31,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:31,508 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:30:31,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 17:30:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:31,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-25 17:30:31,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:32,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 17:30:32,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119829210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:30:32,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:30:32,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [22] total 27 [2023-12-25 17:30:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522583136] [2023-12-25 17:30:32,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:32,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:30:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:30:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2023-12-25 17:30:32,137 INFO L87 Difference]: Start difference. First operand 3216 states and 4667 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:32,527 INFO L93 Difference]: Finished difference Result 4705 states and 6847 transitions. [2023-12-25 17:30:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:30:32,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-25 17:30:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:32,530 INFO L225 Difference]: With dead ends: 4705 [2023-12-25 17:30:32,530 INFO L226 Difference]: Without dead ends: 3196 [2023-12-25 17:30:32,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2023-12-25 17:30:32,532 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 411 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:32,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 696 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 17:30:32,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2023-12-25 17:30:32,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 3166. [2023-12-25 17:30:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3166 states, 3165 states have (on average 1.4492890995260663) internal successors, (4587), 3165 states have internal predecessors, (4587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 4587 transitions. [2023-12-25 17:30:32,624 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 4587 transitions. Word has length 147 [2023-12-25 17:30:32,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:32,624 INFO L495 AbstractCegarLoop]: Abstraction has 3166 states and 4587 transitions. [2023-12-25 17:30:32,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 4587 transitions. [2023-12-25 17:30:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-25 17:30:32,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:32,626 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] [2023-12-25 17:30:32,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-25 17:30:32,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:32,835 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:32,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:32,835 INFO L85 PathProgramCache]: Analyzing trace with hash 732618087, now seen corresponding path program 1 times [2023-12-25 17:30:32,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:32,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765886786] [2023-12-25 17:30:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:32,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:33,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:33,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765886786] [2023-12-25 17:30:33,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765886786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:30:33,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:30:33,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:30:33,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564172234] [2023-12-25 17:30:33,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:33,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:33,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:33,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:33,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:33,154 INFO L87 Difference]: Start difference. First operand 3166 states and 4587 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:33,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:33,348 INFO L93 Difference]: Finished difference Result 4305 states and 6245 transitions. [2023-12-25 17:30:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:30:33,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-25 17:30:33,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:33,351 INFO L225 Difference]: With dead ends: 4305 [2023-12-25 17:30:33,352 INFO L226 Difference]: Without dead ends: 3181 [2023-12-25 17:30:33,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:33,353 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 1 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:33,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 912 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:30:33,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2023-12-25 17:30:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 3176. [2023-12-25 17:30:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 3175 states have (on average 1.4478740157480314) internal successors, (4597), 3175 states have internal predecessors, (4597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 4597 transitions. [2023-12-25 17:30:33,474 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 4597 transitions. Word has length 147 [2023-12-25 17:30:33,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:33,474 INFO L495 AbstractCegarLoop]: Abstraction has 3176 states and 4597 transitions. [2023-12-25 17:30:33,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:33,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 4597 transitions. [2023-12-25 17:30:33,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:30:33,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:33,477 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] [2023-12-25 17:30:33,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-25 17:30:33,477 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:33,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:33,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2010684121, now seen corresponding path program 1 times [2023-12-25 17:30:33,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:33,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984956226] [2023-12-25 17:30:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:33,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:33,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984956226] [2023-12-25 17:30:33,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984956226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:30:33,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:30:33,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:30:33,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292841222] [2023-12-25 17:30:33,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:30:33,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:30:33,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:33,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:30:33,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:33,778 INFO L87 Difference]: Start difference. First operand 3176 states and 4597 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:30:33,991 INFO L93 Difference]: Finished difference Result 5082 states and 7357 transitions. [2023-12-25 17:30:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:30:33,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-25 17:30:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:30:33,994 INFO L225 Difference]: With dead ends: 5082 [2023-12-25 17:30:33,994 INFO L226 Difference]: Without dead ends: 3230 [2023-12-25 17:30:33,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:30:33,996 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 248 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:30:33,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 494 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:30:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2023-12-25 17:30:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3212. [2023-12-25 17:30:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 3211 states have (on average 1.4428526938648396) internal successors, (4633), 3211 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:34,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 4633 transitions. [2023-12-25 17:30:34,086 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 4633 transitions. Word has length 148 [2023-12-25 17:30:34,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:30:34,086 INFO L495 AbstractCegarLoop]: Abstraction has 3212 states and 4633 transitions. [2023-12-25 17:30:34,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:30:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 4633 transitions. [2023-12-25 17:30:34,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:30:34,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:30:34,089 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:30:34,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-25 17:30:34,089 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:30:34,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:30:34,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1296599587, now seen corresponding path program 1 times [2023-12-25 17:30:34,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:30:34,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160536358] [2023-12-25 17:30:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:34,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:30:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:37,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:30:37,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160536358] [2023-12-25 17:30:37,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160536358] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:30:37,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675318929] [2023-12-25 17:30:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:30:37,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:30:37,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:30:37,223 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:30:37,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-25 17:30:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:30:37,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 143 conjunts are in the unsatisfiable core [2023-12-25 17:30:37,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:30:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:38,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:30:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:30:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675318929] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:30:40,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:30:40,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 23] total 58 [2023-12-25 17:30:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121958389] [2023-12-25 17:30:40,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:30:40,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-25 17:30:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:30:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-25 17:30:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=3053, Unknown=0, NotChecked=0, Total=3422 [2023-12-25 17:30:40,789 INFO L87 Difference]: Start difference. First operand 3212 states and 4633 transitions. Second operand has 59 states, 59 states have (on average 6.711864406779661) internal successors, (396), 58 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:16,983 INFO L93 Difference]: Finished difference Result 40091 states and 58653 transitions. [2023-12-25 17:31:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 371 states. [2023-12-25 17:31:16,984 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.711864406779661) internal successors, (396), 58 states have internal predecessors, (396), 0 states have call successors, (0), 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 148 [2023-12-25 17:31:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:17,015 INFO L225 Difference]: With dead ends: 40091 [2023-12-25 17:31:17,015 INFO L226 Difference]: Without dead ends: 38771 [2023-12-25 17:31:17,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81158 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=19342, Invalid=161708, Unknown=0, NotChecked=0, Total=181050 [2023-12-25 17:31:17,027 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 16990 mSDsluCounter, 24923 mSDsCounter, 0 mSdLazyCounter, 21511 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16990 SdHoareTripleChecker+Valid, 25692 SdHoareTripleChecker+Invalid, 21568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 21511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:17,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16990 Valid, 25692 Invalid, 21568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 21511 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-12-25 17:31:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38771 states. [2023-12-25 17:31:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38771 to 5330. [2023-12-25 17:31:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 1.4462375680240196) internal successors, (7707), 5329 states have internal predecessors, (7707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 7707 transitions. [2023-12-25 17:31:17,321 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 7707 transitions. Word has length 148 [2023-12-25 17:31:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:31:17,321 INFO L495 AbstractCegarLoop]: Abstraction has 5330 states and 7707 transitions. [2023-12-25 17:31:17,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.711864406779661) internal successors, (396), 58 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 7707 transitions. [2023-12-25 17:31:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:31:17,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:31:17,326 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] [2023-12-25 17:31:17,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-25 17:31:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:17,534 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:31:17,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:31:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2126826041, now seen corresponding path program 1 times [2023-12-25 17:31:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:31:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400527806] [2023-12-25 17:31:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:31:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:20,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:31:20,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400527806] [2023-12-25 17:31:20,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400527806] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:31:20,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802250993] [2023-12-25 17:31:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:31:20,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:31:20,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:31:20,565 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:31:20,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-25 17:31:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:31:20,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 140 conjunts are in the unsatisfiable core [2023-12-25 17:31:20,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:31:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:21,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:31:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:31:23,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802250993] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:31:23,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:31:23,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21, 20] total 48 [2023-12-25 17:31:23,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775716777] [2023-12-25 17:31:23,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:31:23,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-25 17:31:23,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:31:23,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-25 17:31:23,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2078, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 17:31:23,586 INFO L87 Difference]: Start difference. First operand 5330 states and 7707 transitions. Second operand has 49 states, 49 states have (on average 8.122448979591837) internal successors, (398), 48 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:31:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:31:59,541 INFO L93 Difference]: Finished difference Result 51457 states and 74408 transitions. [2023-12-25 17:31:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2023-12-25 17:31:59,542 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 8.122448979591837) internal successors, (398), 48 states have internal predecessors, (398), 0 states have call successors, (0), 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 148 [2023-12-25 17:31:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:31:59,582 INFO L225 Difference]: With dead ends: 51457 [2023-12-25 17:31:59,582 INFO L226 Difference]: Without dead ends: 48338 [2023-12-25 17:31:59,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81772 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=20714, Invalid=162898, Unknown=0, NotChecked=0, Total=183612 [2023-12-25 17:31:59,599 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 18594 mSDsluCounter, 18091 mSDsCounter, 0 mSdLazyCounter, 15857 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18594 SdHoareTripleChecker+Valid, 18748 SdHoareTripleChecker+Invalid, 15974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 15857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:31:59,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18594 Valid, 18748 Invalid, 15974 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 15857 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-25 17:31:59,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48338 states. [2023-12-25 17:32:00,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48338 to 5901. [2023-12-25 17:32:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5901 states, 5900 states have (on average 1.4394915254237288) internal successors, (8493), 5900 states have internal predecessors, (8493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5901 states to 5901 states and 8493 transitions. [2023-12-25 17:32:00,059 INFO L78 Accepts]: Start accepts. Automaton has 5901 states and 8493 transitions. Word has length 148 [2023-12-25 17:32:00,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:00,059 INFO L495 AbstractCegarLoop]: Abstraction has 5901 states and 8493 transitions. [2023-12-25 17:32:00,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.122448979591837) internal successors, (398), 48 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:00,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5901 states and 8493 transitions. [2023-12-25 17:32:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:32:00,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:00,064 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] [2023-12-25 17:32:00,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-25 17:32:00,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-12-25 17:32:00,272 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:00,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1360528475, now seen corresponding path program 1 times [2023-12-25 17:32:00,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:00,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226762626] [2023-12-25 17:32:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:00,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:00,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:00,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226762626] [2023-12-25 17:32:00,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226762626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:32:00,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:32:00,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:32:00,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207836144] [2023-12-25 17:32:00,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:32:00,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:32:00,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:00,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:32:00,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:32:00,548 INFO L87 Difference]: Start difference. First operand 5901 states and 8493 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:01,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:32:01,029 INFO L93 Difference]: Finished difference Result 15923 states and 22905 transitions. [2023-12-25 17:32:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:32:01,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-25 17:32:01,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:32:01,037 INFO L225 Difference]: With dead ends: 15923 [2023-12-25 17:32:01,037 INFO L226 Difference]: Without dead ends: 10771 [2023-12-25 17:32:01,040 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 [2023-12-25 17:32:01,040 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 222 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:32:01,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1013 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:32:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2023-12-25 17:32:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 5977. [2023-12-25 17:32:01,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5977 states, 5976 states have (on average 1.4339022757697457) internal successors, (8569), 5976 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5977 states to 5977 states and 8569 transitions. [2023-12-25 17:32:01,302 INFO L78 Accepts]: Start accepts. Automaton has 5977 states and 8569 transitions. Word has length 148 [2023-12-25 17:32:01,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:01,302 INFO L495 AbstractCegarLoop]: Abstraction has 5977 states and 8569 transitions. [2023-12-25 17:32:01,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5977 states and 8569 transitions. [2023-12-25 17:32:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:32:01,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:01,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:32:01,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-25 17:32:01,307 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:01,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash 106400309, now seen corresponding path program 1 times [2023-12-25 17:32:01,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:01,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081257061] [2023-12-25 17:32:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:01,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:03,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:03,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081257061] [2023-12-25 17:32:03,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081257061] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:32:03,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045368214] [2023-12-25 17:32:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:03,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:32:03,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:32:03,512 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:32:03,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-25 17:32:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:03,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 170 conjunts are in the unsatisfiable core [2023-12-25 17:32:03,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:32:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:04,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:32:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:06,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045368214] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:32:06,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:32:06,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 20] total 52 [2023-12-25 17:32:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562432475] [2023-12-25 17:32:06,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:32:06,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-25 17:32:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:06,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-25 17:32:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=2403, Unknown=0, NotChecked=0, Total=2756 [2023-12-25 17:32:06,886 INFO L87 Difference]: Start difference. First operand 5977 states and 8569 transitions. Second operand has 53 states, 53 states have (on average 8.075471698113208) internal successors, (428), 52 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:32:22,721 INFO L93 Difference]: Finished difference Result 28402 states and 41352 transitions. [2023-12-25 17:32:22,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2023-12-25 17:32:22,722 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 8.075471698113208) internal successors, (428), 52 states have internal predecessors, (428), 0 states have call successors, (0), 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 148 [2023-12-25 17:32:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:32:22,744 INFO L225 Difference]: With dead ends: 28402 [2023-12-25 17:32:22,745 INFO L226 Difference]: Without dead ends: 25436 [2023-12-25 17:32:22,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25295 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=9209, Invalid=56071, Unknown=0, NotChecked=0, Total=65280 [2023-12-25 17:32:22,761 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 25460 mSDsluCounter, 10124 mSDsCounter, 0 mSdLazyCounter, 8374 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25460 SdHoareTripleChecker+Valid, 10500 SdHoareTripleChecker+Invalid, 8456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 8374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:32:22,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25460 Valid, 10500 Invalid, 8456 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [82 Valid, 8374 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-25 17:32:22,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25436 states. [2023-12-25 17:32:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25436 to 6117. [2023-12-25 17:32:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6117 states, 6116 states have (on average 1.4316546762589928) internal successors, (8756), 6116 states have internal predecessors, (8756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6117 states to 6117 states and 8756 transitions. [2023-12-25 17:32:23,170 INFO L78 Accepts]: Start accepts. Automaton has 6117 states and 8756 transitions. Word has length 148 [2023-12-25 17:32:23,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:23,170 INFO L495 AbstractCegarLoop]: Abstraction has 6117 states and 8756 transitions. [2023-12-25 17:32:23,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 8.075471698113208) internal successors, (428), 52 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6117 states and 8756 transitions. [2023-12-25 17:32:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:32:23,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:23,174 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] [2023-12-25 17:32:23,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-25 17:32:23,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-25 17:32:23,382 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:23,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:23,382 INFO L85 PathProgramCache]: Analyzing trace with hash -817797979, now seen corresponding path program 1 times [2023-12-25 17:32:23,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:23,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549941271] [2023-12-25 17:32:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:23,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:23,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:23,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549941271] [2023-12-25 17:32:23,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549941271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:32:23,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:32:23,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:32:23,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078585399] [2023-12-25 17:32:23,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:32:23,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:32:23,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:23,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:32:23,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:32:23,654 INFO L87 Difference]: Start difference. First operand 6117 states and 8756 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:24,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:32:24,026 INFO L93 Difference]: Finished difference Result 13351 states and 19088 transitions. [2023-12-25 17:32:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:32:24,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-25 17:32:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:32:24,034 INFO L225 Difference]: With dead ends: 13351 [2023-12-25 17:32:24,034 INFO L226 Difference]: Without dead ends: 9541 [2023-12-25 17:32:24,038 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 [2023-12-25 17:32:24,038 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 222 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:32:24,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1112 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:32:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9541 states. [2023-12-25 17:32:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9541 to 6175. [2023-12-25 17:32:24,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6175 states, 6174 states have (on average 1.4275996112730807) internal successors, (8814), 6174 states have internal predecessors, (8814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6175 states to 6175 states and 8814 transitions. [2023-12-25 17:32:24,352 INFO L78 Accepts]: Start accepts. Automaton has 6175 states and 8814 transitions. Word has length 148 [2023-12-25 17:32:24,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:24,352 INFO L495 AbstractCegarLoop]: Abstraction has 6175 states and 8814 transitions. [2023-12-25 17:32:24,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 6175 states and 8814 transitions. [2023-12-25 17:32:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:32:24,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:24,356 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] [2023-12-25 17:32:24,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-25 17:32:24,357 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:24,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2034991397, now seen corresponding path program 1 times [2023-12-25 17:32:24,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:24,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891968503] [2023-12-25 17:32:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:24,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:24,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891968503] [2023-12-25 17:32:24,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891968503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:32:24,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:32:24,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:32:24,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577411776] [2023-12-25 17:32:24,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:32:24,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:32:24,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:24,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:32:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:32:24,619 INFO L87 Difference]: Start difference. First operand 6175 states and 8814 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:32:25,062 INFO L93 Difference]: Finished difference Result 14816 states and 21011 transitions. [2023-12-25 17:32:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:32:25,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-25 17:32:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:32:25,072 INFO L225 Difference]: With dead ends: 14816 [2023-12-25 17:32:25,072 INFO L226 Difference]: Without dead ends: 10382 [2023-12-25 17:32:25,077 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 [2023-12-25 17:32:25,078 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 222 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:32:25,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1073 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:32:25,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10382 states. [2023-12-25 17:32:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10382 to 6303. [2023-12-25 17:32:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6303 states, 6302 states have (on average 1.4189146302761029) internal successors, (8942), 6302 states have internal predecessors, (8942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6303 states to 6303 states and 8942 transitions. [2023-12-25 17:32:25,393 INFO L78 Accepts]: Start accepts. Automaton has 6303 states and 8942 transitions. Word has length 148 [2023-12-25 17:32:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:25,393 INFO L495 AbstractCegarLoop]: Abstraction has 6303 states and 8942 transitions. [2023-12-25 17:32:25,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 6303 states and 8942 transitions. [2023-12-25 17:32:25,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:32:25,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:25,397 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] [2023-12-25 17:32:25,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-25 17:32:25,398 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:25,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash -757057947, now seen corresponding path program 1 times [2023-12-25 17:32:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:25,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435259593] [2023-12-25 17:32:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:25,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:25,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435259593] [2023-12-25 17:32:25,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435259593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:32:25,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:32:25,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:32:25,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051174931] [2023-12-25 17:32:25,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:32:25,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:32:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:32:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:32:25,655 INFO L87 Difference]: Start difference. First operand 6303 states and 8942 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:26,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:32:26,107 INFO L93 Difference]: Finished difference Result 16213 states and 22932 transitions. [2023-12-25 17:32:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:32:26,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-25 17:32:26,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:32:26,119 INFO L225 Difference]: With dead ends: 16213 [2023-12-25 17:32:26,119 INFO L226 Difference]: Without dead ends: 11253 [2023-12-25 17:32:26,124 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 [2023-12-25 17:32:26,125 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 222 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:32:26,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1043 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:32:26,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11253 states. [2023-12-25 17:32:26,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11253 to 6423. [2023-12-25 17:32:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6423 states, 6422 states have (on average 1.4110868888196824) internal successors, (9062), 6422 states have internal predecessors, (9062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 9062 transitions. [2023-12-25 17:32:26,427 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 9062 transitions. Word has length 148 [2023-12-25 17:32:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:26,427 INFO L495 AbstractCegarLoop]: Abstraction has 6423 states and 9062 transitions. [2023-12-25 17:32:26,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 9062 transitions. [2023-12-25 17:32:26,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:32:26,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:26,434 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] [2023-12-25 17:32:26,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-25 17:32:26,434 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:26,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1552486527, now seen corresponding path program 1 times [2023-12-25 17:32:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:26,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172262807] [2023-12-25 17:32:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:26,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:26,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172262807] [2023-12-25 17:32:26,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172262807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:32:26,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:32:26,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:32:26,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138217409] [2023-12-25 17:32:26,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:32:26,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:32:26,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:26,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:32:26,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:32:26,688 INFO L87 Difference]: Start difference. First operand 6423 states and 9062 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:27,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:32:27,073 INFO L93 Difference]: Finished difference Result 15907 states and 22440 transitions. [2023-12-25 17:32:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:32:27,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-25 17:32:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:32:27,082 INFO L225 Difference]: With dead ends: 15907 [2023-12-25 17:32:27,082 INFO L226 Difference]: Without dead ends: 10131 [2023-12-25 17:32:27,088 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 [2023-12-25 17:32:27,088 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 222 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:32:27,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1000 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:32:27,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10131 states. [2023-12-25 17:32:27,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10131 to 6463. [2023-12-25 17:32:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6463 states, 6462 states have (on average 1.4085422469823583) internal successors, (9102), 6462 states have internal predecessors, (9102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 9102 transitions. [2023-12-25 17:32:27,397 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 9102 transitions. Word has length 148 [2023-12-25 17:32:27,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:27,397 INFO L495 AbstractCegarLoop]: Abstraction has 6463 states and 9102 transitions. [2023-12-25 17:32:27,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 9102 transitions. [2023-12-25 17:32:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:32:27,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:27,401 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] [2023-12-25 17:32:27,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-25 17:32:27,401 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:27,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash 566285505, now seen corresponding path program 1 times [2023-12-25 17:32:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:27,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382150613] [2023-12-25 17:32:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:27,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:27,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:27,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382150613] [2023-12-25 17:32:27,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382150613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:32:27,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:32:27,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:32:27,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012842994] [2023-12-25 17:32:27,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:32:27,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:32:27,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:27,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:32:27,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:32:27,676 INFO L87 Difference]: Start difference. First operand 6463 states and 9102 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:32:28,081 INFO L93 Difference]: Finished difference Result 17631 states and 24825 transitions. [2023-12-25 17:32:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:32:28,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-25 17:32:28,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:32:28,090 INFO L225 Difference]: With dead ends: 17631 [2023-12-25 17:32:28,090 INFO L226 Difference]: Without dead ends: 11475 [2023-12-25 17:32:28,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:32:28,096 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 222 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:32:28,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1174 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:32:28,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11475 states. [2023-12-25 17:32:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11475 to 6539. [2023-12-25 17:32:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6539 states, 6538 states have (on average 1.4037932089323952) internal successors, (9178), 6538 states have internal predecessors, (9178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6539 states to 6539 states and 9178 transitions. [2023-12-25 17:32:28,396 INFO L78 Accepts]: Start accepts. Automaton has 6539 states and 9178 transitions. Word has length 148 [2023-12-25 17:32:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:28,397 INFO L495 AbstractCegarLoop]: Abstraction has 6539 states and 9178 transitions. [2023-12-25 17:32:28,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6539 states and 9178 transitions. [2023-12-25 17:32:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-25 17:32:28,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:28,400 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] [2023-12-25 17:32:28,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-25 17:32:28,400 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:28,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:28,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2138098385, now seen corresponding path program 1 times [2023-12-25 17:32:28,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:28,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511023715] [2023-12-25 17:32:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:28,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:29,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:29,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511023715] [2023-12-25 17:32:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511023715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:32:29,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:32:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:32:29,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991483766] [2023-12-25 17:32:29,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:32:29,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:32:29,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:29,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:32:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:32:29,139 INFO L87 Difference]: Start difference. First operand 6539 states and 9178 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:32:29,961 INFO L93 Difference]: Finished difference Result 24307 states and 34140 transitions. [2023-12-25 17:32:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 17:32:29,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-25 17:32:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:32:29,975 INFO L225 Difference]: With dead ends: 24307 [2023-12-25 17:32:29,975 INFO L226 Difference]: Without dead ends: 17849 [2023-12-25 17:32:29,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:32:29,984 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1166 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:32:29,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1397 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:32:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17849 states. [2023-12-25 17:32:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17849 to 6647. [2023-12-25 17:32:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6647 states, 6646 states have (on average 1.4040024074631356) internal successors, (9331), 6646 states have internal predecessors, (9331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6647 states to 6647 states and 9331 transitions. [2023-12-25 17:32:30,313 INFO L78 Accepts]: Start accepts. Automaton has 6647 states and 9331 transitions. Word has length 148 [2023-12-25 17:32:30,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:32:30,313 INFO L495 AbstractCegarLoop]: Abstraction has 6647 states and 9331 transitions. [2023-12-25 17:32:30,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:32:30,313 INFO L276 IsEmpty]: Start isEmpty. Operand 6647 states and 9331 transitions. [2023-12-25 17:32:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:32:30,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:32:30,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:32:30,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-25 17:32:30,317 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:32:30,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:32:30,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1661226245, now seen corresponding path program 1 times [2023-12-25 17:32:30,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:32:30,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97191316] [2023-12-25 17:32:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:30,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:32:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:35,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:32:35,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97191316] [2023-12-25 17:32:35,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97191316] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:32:35,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350349817] [2023-12-25 17:32:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:32:35,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:32:35,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:32:35,668 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:32:35,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-25 17:32:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:32:36,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 159 conjunts are in the unsatisfiable core [2023-12-25 17:32:36,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:32:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:37,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:32:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:32:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350349817] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:32:39,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:32:39,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 23] total 63 [2023-12-25 17:32:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651355469] [2023-12-25 17:32:39,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:32:39,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-25 17:32:39,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:32:39,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-25 17:32:39,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=3633, Unknown=0, NotChecked=0, Total=4032 [2023-12-25 17:32:39,010 INFO L87 Difference]: Start difference. First operand 6647 states and 9331 transitions. Second operand has 64 states, 64 states have (on average 6.578125) internal successors, (421), 63 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:34:15,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:34:15,471 INFO L93 Difference]: Finished difference Result 70675 states and 101130 transitions. [2023-12-25 17:34:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 860 states. [2023-12-25 17:34:15,472 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.578125) internal successors, (421), 63 states have internal predecessors, (421), 0 states have call successors, (0), 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 149 [2023-12-25 17:34:15,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:34:15,537 INFO L225 Difference]: With dead ends: 70675 [2023-12-25 17:34:15,537 INFO L226 Difference]: Without dead ends: 68067 [2023-12-25 17:34:15,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 918 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405343 ImplicationChecksByTransitivity, 77.5s TimeCoverageRelationStatistics Valid=70481, Invalid=774999, Unknown=0, NotChecked=0, Total=845480 [2023-12-25 17:34:15,589 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 54254 mSDsluCounter, 22945 mSDsCounter, 0 mSdLazyCounter, 20426 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54254 SdHoareTripleChecker+Valid, 23590 SdHoareTripleChecker+Invalid, 20692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 20426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:34:15,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54254 Valid, 23590 Invalid, 20692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [266 Valid, 20426 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-12-25 17:34:15,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68067 states. [2023-12-25 17:34:16,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68067 to 7998. [2023-12-25 17:34:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7998 states, 7997 states have (on average 1.4065274477929224) internal successors, (11248), 7997 states have internal predecessors, (11248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:34:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7998 states to 7998 states and 11248 transitions. [2023-12-25 17:34:16,316 INFO L78 Accepts]: Start accepts. Automaton has 7998 states and 11248 transitions. Word has length 149 [2023-12-25 17:34:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:34:16,316 INFO L495 AbstractCegarLoop]: Abstraction has 7998 states and 11248 transitions. [2023-12-25 17:34:16,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.578125) internal successors, (421), 63 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:34:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 7998 states and 11248 transitions. [2023-12-25 17:34:16,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:34:16,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:34:16,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:34:16,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-25 17:34:16,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:34:16,528 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:34:16,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:34:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash -902486141, now seen corresponding path program 1 times [2023-12-25 17:34:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:34:16,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777721494] [2023-12-25 17:34:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:34:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:34:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:34:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:34:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:34:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777721494] [2023-12-25 17:34:19,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777721494] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:34:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592190084] [2023-12-25 17:34:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:34:19,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:34:19,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:34:19,502 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:34:19,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-25 17:34:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:34:19,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 203 conjunts are in the unsatisfiable core [2023-12-25 17:34:19,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:34:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:34:21,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:34:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:34:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592190084] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:34:24,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:34:24,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 25, 23] total 56 [2023-12-25 17:34:24,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292237334] [2023-12-25 17:34:24,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:34:24,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-25 17:34:24,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:34:24,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-25 17:34:24,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=2483, Unknown=0, NotChecked=0, Total=3192 [2023-12-25 17:34:24,167 INFO L87 Difference]: Start difference. First operand 7998 states and 11248 transitions. Second operand has 57 states, 57 states have (on average 7.140350877192983) internal successors, (407), 56 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:34:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:34:36,511 INFO L93 Difference]: Finished difference Result 38910 states and 55530 transitions. [2023-12-25 17:34:36,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-25 17:34:36,512 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 7.140350877192983) internal successors, (407), 56 states have internal predecessors, (407), 0 states have call successors, (0), 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 149 [2023-12-25 17:34:36,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:34:36,539 INFO L225 Difference]: With dead ends: 38910 [2023-12-25 17:34:36,539 INFO L226 Difference]: Without dead ends: 35269 [2023-12-25 17:34:36,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7097 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=4135, Invalid=16171, Unknown=0, NotChecked=0, Total=20306 [2023-12-25 17:34:36,546 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 13489 mSDsluCounter, 14181 mSDsCounter, 0 mSdLazyCounter, 11106 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13489 SdHoareTripleChecker+Valid, 14582 SdHoareTripleChecker+Invalid, 11145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:34:36,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13489 Valid, 14582 Invalid, 11145 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 11106 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-25 17:34:36,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35269 states. [2023-12-25 17:34:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35269 to 14405. [2023-12-25 17:34:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14405 states, 14404 states have (on average 1.4061371841155235) internal successors, (20254), 14404 states have internal predecessors, (20254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:34:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14405 states to 14405 states and 20254 transitions. [2023-12-25 17:34:37,467 INFO L78 Accepts]: Start accepts. Automaton has 14405 states and 20254 transitions. Word has length 149 [2023-12-25 17:34:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:34:37,467 INFO L495 AbstractCegarLoop]: Abstraction has 14405 states and 20254 transitions. [2023-12-25 17:34:37,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.140350877192983) internal successors, (407), 56 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:34:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 14405 states and 20254 transitions. [2023-12-25 17:34:37,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:34:37,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:34:37,474 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] [2023-12-25 17:34:37,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-25 17:34:37,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:34:37,681 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:34:37,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:34:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash -771833275, now seen corresponding path program 1 times [2023-12-25 17:34:37,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:34:37,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519008130] [2023-12-25 17:34:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:34:37,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:34:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:34:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:34:37,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:34:37,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519008130] [2023-12-25 17:34:37,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519008130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:34:37,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:34:37,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:34:37,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176958466] [2023-12-25 17:34:37,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:34:37,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:34:37,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:34:37,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:34:37,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 17:34:37,957 INFO L87 Difference]: Start difference. First operand 14405 states and 20254 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:34:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:34:39,124 INFO L93 Difference]: Finished difference Result 37811 states and 53229 transitions. [2023-12-25 17:34:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:34:39,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:34:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:34:39,146 INFO L225 Difference]: With dead ends: 37811 [2023-12-25 17:34:39,146 INFO L226 Difference]: Without dead ends: 23793 [2023-12-25 17:34:39,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:34:39,152 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 222 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:34:39,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1326 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:34:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23793 states. [2023-12-25 17:34:39,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23793 to 14059. [2023-12-25 17:34:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14059 states, 14058 states have (on average 1.4049651444017641) internal successors, (19751), 14058 states have internal predecessors, (19751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:34:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14059 states to 14059 states and 19751 transitions. [2023-12-25 17:34:40,020 INFO L78 Accepts]: Start accepts. Automaton has 14059 states and 19751 transitions. Word has length 149 [2023-12-25 17:34:40,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:34:40,020 INFO L495 AbstractCegarLoop]: Abstraction has 14059 states and 19751 transitions. [2023-12-25 17:34:40,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:34:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 14059 states and 19751 transitions. [2023-12-25 17:34:40,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:34:40,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:34:40,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:34:40,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-25 17:34:40,027 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:34:40,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:34:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2010716393, now seen corresponding path program 1 times [2023-12-25 17:34:40,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:34:40,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499979240] [2023-12-25 17:34:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:34:40,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:34:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:34:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 17:34:41,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:34:41,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499979240] [2023-12-25 17:34:41,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499979240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:34:41,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826855401] [2023-12-25 17:34:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:34:41,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:34:41,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:34:41,949 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:34:41,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-25 17:34:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:34:42,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 198 conjunts are in the unsatisfiable core [2023-12-25 17:34:42,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:34:43,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:34:43,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:34:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:34:48,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826855401] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:34:48,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:34:48,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 26, 27] total 59 [2023-12-25 17:34:48,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122487984] [2023-12-25 17:34:48,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:34:48,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-25 17:34:48,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:34:48,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-25 17:34:48,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=2991, Unknown=0, NotChecked=0, Total=3540 [2023-12-25 17:34:48,390 INFO L87 Difference]: Start difference. First operand 14059 states and 19751 transitions. Second operand has 60 states, 60 states have (on average 6.516666666666667) internal successors, (391), 59 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:38,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:38,056 INFO L93 Difference]: Finished difference Result 140772 states and 199897 transitions. [2023-12-25 17:36:38,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 659 states. [2023-12-25 17:36:38,057 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.516666666666667) internal successors, (391), 59 states have internal predecessors, (391), 0 states have call successors, (0), 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 149 [2023-12-25 17:36:38,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:38,199 INFO L225 Difference]: With dead ends: 140772 [2023-12-25 17:36:38,199 INFO L226 Difference]: Without dead ends: 132174 [2023-12-25 17:36:38,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 961 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 713 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245338 ImplicationChecksByTransitivity, 84.7s TimeCoverageRelationStatistics Valid=62414, Invalid=448096, Unknown=0, NotChecked=0, Total=510510 [2023-12-25 17:36:38,256 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 19531 mSDsluCounter, 26686 mSDsCounter, 0 mSdLazyCounter, 21983 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19531 SdHoareTripleChecker+Valid, 27329 SdHoareTripleChecker+Invalid, 22104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 21983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:36:38,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19531 Valid, 27329 Invalid, 22104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [121 Valid, 21983 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2023-12-25 17:36:38,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132174 states. [2023-12-25 17:36:39,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132174 to 15495. [2023-12-25 17:36:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15495 states, 15494 states have (on average 1.4053181876855556) internal successors, (21774), 15494 states have internal predecessors, (21774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15495 states to 15495 states and 21774 transitions. [2023-12-25 17:36:39,979 INFO L78 Accepts]: Start accepts. Automaton has 15495 states and 21774 transitions. Word has length 149 [2023-12-25 17:36:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:39,979 INFO L495 AbstractCegarLoop]: Abstraction has 15495 states and 21774 transitions. [2023-12-25 17:36:39,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.516666666666667) internal successors, (391), 59 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 15495 states and 21774 transitions. [2023-12-25 17:36:39,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:36:39,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:39,985 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] [2023-12-25 17:36:39,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-25 17:36:40,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-12-25 17:36:40,198 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:40,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash -367552647, now seen corresponding path program 1 times [2023-12-25 17:36:40,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:40,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788266726] [2023-12-25 17:36:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:40,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:40,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:40,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788266726] [2023-12-25 17:36:40,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788266726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:40,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:40,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 17:36:40,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77817550] [2023-12-25 17:36:40,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:40,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 17:36:40,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:40,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 17:36:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:36:40,912 INFO L87 Difference]: Start difference. First operand 15495 states and 21774 transitions. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:42,644 INFO L93 Difference]: Finished difference Result 38394 states and 53997 transitions. [2023-12-25 17:36:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 17:36:42,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:36:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:42,669 INFO L225 Difference]: With dead ends: 38394 [2023-12-25 17:36:42,669 INFO L226 Difference]: Without dead ends: 27678 [2023-12-25 17:36:42,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-25 17:36:42,688 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1124 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:36:42,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 2333 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:36:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27678 states. [2023-12-25 17:36:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27678 to 15815. [2023-12-25 17:36:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15815 states, 15814 states have (on average 1.4054002782344759) internal successors, (22225), 15814 states have internal predecessors, (22225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15815 states to 15815 states and 22225 transitions. [2023-12-25 17:36:43,782 INFO L78 Accepts]: Start accepts. Automaton has 15815 states and 22225 transitions. Word has length 149 [2023-12-25 17:36:43,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:43,782 INFO L495 AbstractCegarLoop]: Abstraction has 15815 states and 22225 transitions. [2023-12-25 17:36:43,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 15815 states and 22225 transitions. [2023-12-25 17:36:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:36:43,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:43,788 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] [2023-12-25 17:36:43,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-25 17:36:43,789 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:43,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1755939429, now seen corresponding path program 1 times [2023-12-25 17:36:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:43,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609686993] [2023-12-25 17:36:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:44,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:44,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609686993] [2023-12-25 17:36:44,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609686993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:36:44,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:36:44,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 17:36:44,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219578652] [2023-12-25 17:36:44,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:36:44,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:36:44,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:36:44,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:36:44,647 INFO L87 Difference]: Start difference. First operand 15815 states and 22225 transitions. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:36:46,539 INFO L93 Difference]: Finished difference Result 55340 states and 77759 transitions. [2023-12-25 17:36:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 17:36:46,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:36:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:36:46,616 INFO L225 Difference]: With dead ends: 55340 [2023-12-25 17:36:46,616 INFO L226 Difference]: Without dead ends: 42807 [2023-12-25 17:36:46,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2023-12-25 17:36:46,624 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 2017 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:36:46,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 3211 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:36:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42807 states. [2023-12-25 17:36:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42807 to 19096. [2023-12-25 17:36:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19096 states, 19095 states have (on average 1.4013092432573973) internal successors, (26758), 19095 states have internal predecessors, (26758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19096 states to 19096 states and 26758 transitions. [2023-12-25 17:36:47,678 INFO L78 Accepts]: Start accepts. Automaton has 19096 states and 26758 transitions. Word has length 149 [2023-12-25 17:36:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:36:47,678 INFO L495 AbstractCegarLoop]: Abstraction has 19096 states and 26758 transitions. [2023-12-25 17:36:47,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:36:47,678 INFO L276 IsEmpty]: Start isEmpty. Operand 19096 states and 26758 transitions. [2023-12-25 17:36:47,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:36:47,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:36:47,700 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:36:47,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-25 17:36:47,700 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:36:47,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:36:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1325441433, now seen corresponding path program 1 times [2023-12-25 17:36:47,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:36:47,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150852785] [2023-12-25 17:36:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:47,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:36:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:50,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:36:50,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150852785] [2023-12-25 17:36:50,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150852785] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:36:50,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631073603] [2023-12-25 17:36:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:36:50,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:36:50,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:36:50,963 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:36:50,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-25 17:36:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:36:51,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 158 conjunts are in the unsatisfiable core [2023-12-25 17:36:51,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:36:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:52,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:36:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:36:53,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631073603] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:36:53,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:36:53,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 20] total 49 [2023-12-25 17:36:53,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185952198] [2023-12-25 17:36:53,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:36:53,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-25 17:36:53,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:36:53,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-25 17:36:53,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=2151, Unknown=0, NotChecked=0, Total=2450 [2023-12-25 17:36:53,988 INFO L87 Difference]: Start difference. First operand 19096 states and 26758 transitions. Second operand has 50 states, 50 states have (on average 8.7) internal successors, (435), 49 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:09,566 INFO L93 Difference]: Finished difference Result 176410 states and 251200 transitions. [2023-12-25 17:37:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2023-12-25 17:37:09,567 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 8.7) internal successors, (435), 49 states have internal predecessors, (435), 0 states have call successors, (0), 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 149 [2023-12-25 17:37:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:09,707 INFO L225 Difference]: With dead ends: 176410 [2023-12-25 17:37:09,708 INFO L226 Difference]: Without dead ends: 163975 [2023-12-25 17:37:09,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13169 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=5204, Invalid=32238, Unknown=0, NotChecked=0, Total=37442 [2023-12-25 17:37:09,726 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 14935 mSDsluCounter, 21032 mSDsCounter, 0 mSdLazyCounter, 15353 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14935 SdHoareTripleChecker+Valid, 21859 SdHoareTripleChecker+Invalid, 15395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 15353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:09,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14935 Valid, 21859 Invalid, 15395 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 15353 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-25 17:37:09,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163975 states. [2023-12-25 17:37:11,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163975 to 20617. [2023-12-25 17:37:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20617 states, 20616 states have (on average 1.3935292976329066) internal successors, (28729), 20616 states have internal predecessors, (28729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20617 states to 20617 states and 28729 transitions. [2023-12-25 17:37:11,631 INFO L78 Accepts]: Start accepts. Automaton has 20617 states and 28729 transitions. Word has length 149 [2023-12-25 17:37:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:11,631 INFO L495 AbstractCegarLoop]: Abstraction has 20617 states and 28729 transitions. [2023-12-25 17:37:11,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.7) internal successors, (435), 49 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 20617 states and 28729 transitions. [2023-12-25 17:37:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:37:11,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:11,641 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] [2023-12-25 17:37:11,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-25 17:37:11,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:37:11,848 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:11,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:11,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1145212211, now seen corresponding path program 1 times [2023-12-25 17:37:11,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:11,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979828989] [2023-12-25 17:37:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:11,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:12,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:12,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979828989] [2023-12-25 17:37:12,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979828989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:12,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:12,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 17:37:12,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847119114] [2023-12-25 17:37:12,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:12,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 17:37:12,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:12,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 17:37:12,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:37:12,816 INFO L87 Difference]: Start difference. First operand 20617 states and 28729 transitions. Second operand has 10 states, 10 states have (on average 14.9) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:16,107 INFO L93 Difference]: Finished difference Result 92822 states and 128990 transitions. [2023-12-25 17:37:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 17:37:16,108 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:37:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:16,182 INFO L225 Difference]: With dead ends: 92822 [2023-12-25 17:37:16,183 INFO L226 Difference]: Without dead ends: 75213 [2023-12-25 17:37:16,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-12-25 17:37:16,198 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 2601 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2601 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:16,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2601 Valid, 2754 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:37:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75213 states. [2023-12-25 17:37:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75213 to 28317. [2023-12-25 17:37:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28317 states, 28316 states have (on average 1.3801737533549936) internal successors, (39081), 28316 states have internal predecessors, (39081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28317 states to 28317 states and 39081 transitions. [2023-12-25 17:37:17,658 INFO L78 Accepts]: Start accepts. Automaton has 28317 states and 39081 transitions. Word has length 149 [2023-12-25 17:37:17,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:17,658 INFO L495 AbstractCegarLoop]: Abstraction has 28317 states and 39081 transitions. [2023-12-25 17:37:17,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:17,658 INFO L276 IsEmpty]: Start isEmpty. Operand 28317 states and 39081 transitions. [2023-12-25 17:37:17,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:37:17,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:17,666 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] [2023-12-25 17:37:17,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-25 17:37:17,667 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:17,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash 371310145, now seen corresponding path program 1 times [2023-12-25 17:37:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:17,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221056572] [2023-12-25 17:37:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:17,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:18,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221056572] [2023-12-25 17:37:18,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221056572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:18,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:18,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:37:18,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178418954] [2023-12-25 17:37:18,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:18,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:37:18,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:37:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:37:18,473 INFO L87 Difference]: Start difference. First operand 28317 states and 39081 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:20,368 INFO L93 Difference]: Finished difference Result 69724 states and 96497 transitions. [2023-12-25 17:37:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 17:37:20,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:37:20,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:20,407 INFO L225 Difference]: With dead ends: 69724 [2023-12-25 17:37:20,408 INFO L226 Difference]: Without dead ends: 47643 [2023-12-25 17:37:20,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:37:20,415 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 717 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:20,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1808 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:37:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47643 states. [2023-12-25 17:37:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47643 to 29583. [2023-12-25 17:37:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29583 states, 29582 states have (on average 1.3748563315529714) internal successors, (40671), 29582 states have internal predecessors, (40671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29583 states to 29583 states and 40671 transitions. [2023-12-25 17:37:21,883 INFO L78 Accepts]: Start accepts. Automaton has 29583 states and 40671 transitions. Word has length 149 [2023-12-25 17:37:21,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:21,883 INFO L495 AbstractCegarLoop]: Abstraction has 29583 states and 40671 transitions. [2023-12-25 17:37:21,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 29583 states and 40671 transitions. [2023-12-25 17:37:21,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:37:21,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:21,893 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] [2023-12-25 17:37:21,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-25 17:37:21,893 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:21,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:21,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1162908465, now seen corresponding path program 1 times [2023-12-25 17:37:21,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:21,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916906278] [2023-12-25 17:37:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:21,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:22,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:22,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916906278] [2023-12-25 17:37:22,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916906278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:22,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:22,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 17:37:22,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585583656] [2023-12-25 17:37:22,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:22,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:37:22,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:22,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:37:22,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 17:37:22,589 INFO L87 Difference]: Start difference. First operand 29583 states and 40671 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:24,971 INFO L93 Difference]: Finished difference Result 100595 states and 138802 transitions. [2023-12-25 17:37:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 17:37:24,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:37:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:25,046 INFO L225 Difference]: With dead ends: 100595 [2023-12-25 17:37:25,046 INFO L226 Difference]: Without dead ends: 74235 [2023-12-25 17:37:25,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:37:25,056 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 667 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:25,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1264 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:37:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74235 states. [2023-12-25 17:37:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74235 to 40675. [2023-12-25 17:37:26,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40675 states, 40674 states have (on average 1.3744652603628853) internal successors, (55905), 40674 states have internal predecessors, (55905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40675 states to 40675 states and 55905 transitions. [2023-12-25 17:37:26,643 INFO L78 Accepts]: Start accepts. Automaton has 40675 states and 55905 transitions. Word has length 149 [2023-12-25 17:37:26,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:26,643 INFO L495 AbstractCegarLoop]: Abstraction has 40675 states and 55905 transitions. [2023-12-25 17:37:26,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand 40675 states and 55905 transitions. [2023-12-25 17:37:26,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:37:26,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:26,656 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] [2023-12-25 17:37:26,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-25 17:37:26,656 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:26,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:26,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2117984519, now seen corresponding path program 1 times [2023-12-25 17:37:26,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:26,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484096194] [2023-12-25 17:37:26,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:27,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:27,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484096194] [2023-12-25 17:37:27,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484096194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:27,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:27,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 17:37:27,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63321793] [2023-12-25 17:37:27,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:27,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:37:27,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:27,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:37:27,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:37:27,584 INFO L87 Difference]: Start difference. First operand 40675 states and 55905 transitions. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:31,291 INFO L93 Difference]: Finished difference Result 152189 states and 208183 transitions. [2023-12-25 17:37:31,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 17:37:31,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:37:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:31,401 INFO L225 Difference]: With dead ends: 152189 [2023-12-25 17:37:31,401 INFO L226 Difference]: Without dead ends: 113441 [2023-12-25 17:37:31,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-12-25 17:37:31,419 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1256 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:31,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 2375 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:37:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113441 states. [2023-12-25 17:37:33,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113441 to 45466. [2023-12-25 17:37:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45466 states, 45465 states have (on average 1.367359507313318) internal successors, (62167), 45465 states have internal predecessors, (62167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45466 states to 45466 states and 62167 transitions. [2023-12-25 17:37:33,212 INFO L78 Accepts]: Start accepts. Automaton has 45466 states and 62167 transitions. Word has length 149 [2023-12-25 17:37:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:33,212 INFO L495 AbstractCegarLoop]: Abstraction has 45466 states and 62167 transitions. [2023-12-25 17:37:33,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:33,212 INFO L276 IsEmpty]: Start isEmpty. Operand 45466 states and 62167 transitions. [2023-12-25 17:37:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:37:33,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:33,225 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] [2023-12-25 17:37:33,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-25 17:37:33,225 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:33,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2091707111, now seen corresponding path program 1 times [2023-12-25 17:37:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:33,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433320414] [2023-12-25 17:37:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:33,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:34,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433320414] [2023-12-25 17:37:34,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433320414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:34,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:34,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 17:37:34,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270023195] [2023-12-25 17:37:34,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:34,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 17:37:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:34,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 17:37:34,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:37:34,173 INFO L87 Difference]: Start difference. First operand 45466 states and 62167 transitions. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:36,642 INFO L93 Difference]: Finished difference Result 127103 states and 172929 transitions. [2023-12-25 17:37:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 17:37:36,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:37:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:36,713 INFO L225 Difference]: With dead ends: 127103 [2023-12-25 17:37:36,714 INFO L226 Difference]: Without dead ends: 89704 [2023-12-25 17:37:36,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-25 17:37:36,725 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1216 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:36,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 2018 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 17:37:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89704 states. [2023-12-25 17:37:38,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89704 to 39965. [2023-12-25 17:37:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39965 states, 39964 states have (on average 1.3669552597337604) internal successors, (54629), 39964 states have internal predecessors, (54629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:38,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39965 states to 39965 states and 54629 transitions. [2023-12-25 17:37:38,382 INFO L78 Accepts]: Start accepts. Automaton has 39965 states and 54629 transitions. Word has length 149 [2023-12-25 17:37:38,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:38,382 INFO L495 AbstractCegarLoop]: Abstraction has 39965 states and 54629 transitions. [2023-12-25 17:37:38,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:38,382 INFO L276 IsEmpty]: Start isEmpty. Operand 39965 states and 54629 transitions. [2023-12-25 17:37:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:37:38,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:38,394 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] [2023-12-25 17:37:38,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-25 17:37:38,394 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:38,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1230487877, now seen corresponding path program 1 times [2023-12-25 17:37:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745223432] [2023-12-25 17:37:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:38,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:39,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:39,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745223432] [2023-12-25 17:37:39,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745223432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:39,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:39,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 17:37:39,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260982261] [2023-12-25 17:37:39,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:39,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 17:37:39,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 17:37:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-25 17:37:39,394 INFO L87 Difference]: Start difference. First operand 39965 states and 54629 transitions. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:41,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:41,533 INFO L93 Difference]: Finished difference Result 117842 states and 160930 transitions. [2023-12-25 17:37:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 17:37:41,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:37:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:41,600 INFO L225 Difference]: With dead ends: 117842 [2023-12-25 17:37:41,600 INFO L226 Difference]: Without dead ends: 82858 [2023-12-25 17:37:41,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:37:41,612 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 1272 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:41,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1447 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 17:37:41,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82858 states. [2023-12-25 17:37:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82858 to 44468. [2023-12-25 17:37:43,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44468 states, 44467 states have (on average 1.373040681853959) internal successors, (61055), 44467 states have internal predecessors, (61055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44468 states to 44468 states and 61055 transitions. [2023-12-25 17:37:43,285 INFO L78 Accepts]: Start accepts. Automaton has 44468 states and 61055 transitions. Word has length 149 [2023-12-25 17:37:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:43,285 INFO L495 AbstractCegarLoop]: Abstraction has 44468 states and 61055 transitions. [2023-12-25 17:37:43,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 44468 states and 61055 transitions. [2023-12-25 17:37:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:37:43,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:43,298 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] [2023-12-25 17:37:43,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-25 17:37:43,298 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:43,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash 896949055, now seen corresponding path program 1 times [2023-12-25 17:37:43,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:43,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43934700] [2023-12-25 17:37:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:43,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:43,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:43,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43934700] [2023-12-25 17:37:43,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43934700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:43,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:43,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 17:37:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936495782] [2023-12-25 17:37:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:43,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:37:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:37:43,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 17:37:43,697 INFO L87 Difference]: Start difference. First operand 44468 states and 61055 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:45,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:45,849 INFO L93 Difference]: Finished difference Result 108918 states and 149579 transitions. [2023-12-25 17:37:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:37:45,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:37:45,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:45,906 INFO L225 Difference]: With dead ends: 108918 [2023-12-25 17:37:45,907 INFO L226 Difference]: Without dead ends: 66399 [2023-12-25 17:37:45,917 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 [2023-12-25 17:37:45,918 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 222 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1127 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 [2023-12-25 17:37:45,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1127 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:37:45,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66399 states. [2023-12-25 17:37:47,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66399 to 43817. [2023-12-25 17:37:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43817 states, 43816 states have (on average 1.3722840971334673) internal successors, (60128), 43816 states have internal predecessors, (60128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43817 states to 43817 states and 60128 transitions. [2023-12-25 17:37:47,423 INFO L78 Accepts]: Start accepts. Automaton has 43817 states and 60128 transitions. Word has length 149 [2023-12-25 17:37:47,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:47,423 INFO L495 AbstractCegarLoop]: Abstraction has 43817 states and 60128 transitions. [2023-12-25 17:37:47,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 43817 states and 60128 transitions. [2023-12-25 17:37:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:37:47,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:47,435 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] [2023-12-25 17:37:47,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-12-25 17:37:47,435 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:47,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash -58466981, now seen corresponding path program 1 times [2023-12-25 17:37:47,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:47,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625428519] [2023-12-25 17:37:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:47,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:48,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:48,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625428519] [2023-12-25 17:37:48,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625428519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:48,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:48,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 17:37:48,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409271481] [2023-12-25 17:37:48,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:48,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 17:37:48,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:48,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 17:37:48,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-25 17:37:48,315 INFO L87 Difference]: Start difference. First operand 43817 states and 60128 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:51,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:51,016 INFO L93 Difference]: Finished difference Result 117561 states and 161385 transitions. [2023-12-25 17:37:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 17:37:51,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:37:51,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:51,119 INFO L225 Difference]: With dead ends: 117561 [2023-12-25 17:37:51,120 INFO L226 Difference]: Without dead ends: 82763 [2023-12-25 17:37:51,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:37:51,136 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 414 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:51,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1025 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 17:37:51,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82763 states. [2023-12-25 17:37:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82763 to 76498. [2023-12-25 17:37:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76498 states, 76497 states have (on average 1.3680275043465757) internal successors, (104650), 76497 states have internal predecessors, (104650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76498 states to 76498 states and 104650 transitions. [2023-12-25 17:37:53,192 INFO L78 Accepts]: Start accepts. Automaton has 76498 states and 104650 transitions. Word has length 149 [2023-12-25 17:37:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:53,192 INFO L495 AbstractCegarLoop]: Abstraction has 76498 states and 104650 transitions. [2023-12-25 17:37:53,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 76498 states and 104650 transitions. [2023-12-25 17:37:53,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-25 17:37:53,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:53,211 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] [2023-12-25 17:37:53,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-25 17:37:53,211 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:53,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:53,211 INFO L85 PathProgramCache]: Analyzing trace with hash 972573917, now seen corresponding path program 1 times [2023-12-25 17:37:53,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:53,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008294126] [2023-12-25 17:37:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:53,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:37:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:37:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:37:54,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:37:54,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008294126] [2023-12-25 17:37:54,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008294126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:37:54,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:37:54,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 17:37:54,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267409750] [2023-12-25 17:37:54,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:37:54,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 17:37:54,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:37:54,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 17:37:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:37:54,807 INFO L87 Difference]: Start difference. First operand 76498 states and 104650 transitions. Second operand has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:57,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:37:57,609 INFO L93 Difference]: Finished difference Result 185877 states and 254845 transitions. [2023-12-25 17:37:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 17:37:57,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-12-25 17:37:57,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:37:57,723 INFO L225 Difference]: With dead ends: 185877 [2023-12-25 17:37:57,723 INFO L226 Difference]: Without dead ends: 126892 [2023-12-25 17:37:57,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-25 17:37:57,739 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 1033 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:37:57,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1319 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 17:37:57,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126892 states. [2023-12-25 17:37:59,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126892 to 73689. [2023-12-25 17:37:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73689 states, 73688 states have (on average 1.3684860492888937) internal successors, (100841), 73688 states have internal predecessors, (100841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:59,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73689 states to 73689 states and 100841 transitions. [2023-12-25 17:37:59,904 INFO L78 Accepts]: Start accepts. Automaton has 73689 states and 100841 transitions. Word has length 149 [2023-12-25 17:37:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:37:59,904 INFO L495 AbstractCegarLoop]: Abstraction has 73689 states and 100841 transitions. [2023-12-25 17:37:59,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:37:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 73689 states and 100841 transitions. [2023-12-25 17:37:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-25 17:37:59,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:37:59,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:37:59,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-25 17:37:59,921 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:37:59,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:37:59,922 INFO L85 PathProgramCache]: Analyzing trace with hash 674807573, now seen corresponding path program 1 times [2023-12-25 17:37:59,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:37:59,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187454239] [2023-12-25 17:37:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:37:59,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:38:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:38:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:38:02,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:38:02,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187454239] [2023-12-25 17:38:02,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187454239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:38:02,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658985760] [2023-12-25 17:38:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:38:02,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:38:02,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:38:02,472 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:38:02,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 17:38:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:38:02,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 200 conjunts are in the unsatisfiable core [2023-12-25 17:38:02,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:38:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:38:04,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:38:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:38:07,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658985760] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:38:07,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:38:07,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 27] total 61 [2023-12-25 17:38:07,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197934293] [2023-12-25 17:38:07,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:38:07,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-25 17:38:07,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:38:07,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-25 17:38:07,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=3327, Unknown=0, NotChecked=0, Total=3782 [2023-12-25 17:38:07,304 INFO L87 Difference]: Start difference. First operand 73689 states and 100841 transitions. Second operand has 62 states, 62 states have (on average 6.741935483870968) internal successors, (418), 61 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:39:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:39:00,608 INFO L93 Difference]: Finished difference Result 389808 states and 532080 transitions. [2023-12-25 17:39:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 360 states. [2023-12-25 17:39:00,609 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.741935483870968) internal successors, (418), 61 states have internal predecessors, (418), 0 states have call successors, (0), 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 150 [2023-12-25 17:39:00,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:39:01,111 INFO L225 Difference]: With dead ends: 389808 [2023-12-25 17:39:01,111 INFO L226 Difference]: Without dead ends: 352073 [2023-12-25 17:39:01,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 416 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73965 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=17779, Invalid=156527, Unknown=0, NotChecked=0, Total=174306 [2023-12-25 17:39:01,185 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 18072 mSDsluCounter, 21873 mSDsCounter, 0 mSdLazyCounter, 16897 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18072 SdHoareTripleChecker+Valid, 22560 SdHoareTripleChecker+Invalid, 17023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 16897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:39:01,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18072 Valid, 22560 Invalid, 17023 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 16897 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-12-25 17:39:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352073 states. [2023-12-25 17:39:04,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352073 to 115447. [2023-12-25 17:39:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115447 states, 115446 states have (on average 1.3751710756544184) internal successors, (158758), 115446 states have internal predecessors, (158758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:39:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115447 states to 115447 states and 158758 transitions. [2023-12-25 17:39:05,099 INFO L78 Accepts]: Start accepts. Automaton has 115447 states and 158758 transitions. Word has length 150 [2023-12-25 17:39:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:39:05,100 INFO L495 AbstractCegarLoop]: Abstraction has 115447 states and 158758 transitions. [2023-12-25 17:39:05,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.741935483870968) internal successors, (418), 61 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:39:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 115447 states and 158758 transitions. [2023-12-25 17:39:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-25 17:39:05,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:39:05,120 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] [2023-12-25 17:39:05,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-25 17:39:05,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:39:05,329 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:39:05,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:39:05,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2083752719, now seen corresponding path program 1 times [2023-12-25 17:39:05,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:39:05,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823548266] [2023-12-25 17:39:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:39:05,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:39:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:39:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:39:06,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:39:06,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823548266] [2023-12-25 17:39:06,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823548266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:39:06,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:39:06,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 17:39:06,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648383921] [2023-12-25 17:39:06,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:39:06,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 17:39:06,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:39:06,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 17:39:06,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:39:06,916 INFO L87 Difference]: Start difference. First operand 115447 states and 158758 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:39:10,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:39:10,106 INFO L93 Difference]: Finished difference Result 267047 states and 367179 transitions. [2023-12-25 17:39:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 17:39:10,107 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-25 17:39:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:39:10,302 INFO L225 Difference]: With dead ends: 267047 [2023-12-25 17:39:10,302 INFO L226 Difference]: Without dead ends: 159387 [2023-12-25 17:39:10,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-12-25 17:39:10,349 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1956 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:39:10,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 1651 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 17:39:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159387 states. [2023-12-25 17:39:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159387 to 73656. [2023-12-25 17:39:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73656 states, 73655 states have (on average 1.3500916434729482) internal successors, (99441), 73655 states have internal predecessors, (99441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:39:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73656 states to 73656 states and 99441 transitions. [2023-12-25 17:39:12,634 INFO L78 Accepts]: Start accepts. Automaton has 73656 states and 99441 transitions. Word has length 150 [2023-12-25 17:39:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:39:12,634 INFO L495 AbstractCegarLoop]: Abstraction has 73656 states and 99441 transitions. [2023-12-25 17:39:12,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:39:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 73656 states and 99441 transitions. [2023-12-25 17:39:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-25 17:39:12,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:39:12,647 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:39:12,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-12-25 17:39:12,649 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:39:12,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:39:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1418820311, now seen corresponding path program 1 times [2023-12-25 17:39:12,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:39:12,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257434015] [2023-12-25 17:39:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:39:12,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:39:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:39:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:39:16,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:39:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257434015] [2023-12-25 17:39:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257434015] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 17:39:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047001725] [2023-12-25 17:39:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:39:16,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:39:16,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:39:16,216 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:39:16,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-25 17:39:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:39:16,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 176 conjunts are in the unsatisfiable core [2023-12-25 17:39:16,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:39:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:39:17,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:39:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:39:20,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047001725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:39:20,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 17:39:20,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 22] total 56 [2023-12-25 17:39:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275502904] [2023-12-25 17:39:20,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 17:39:20,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-25 17:39:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:39:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-25 17:39:20,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=2881, Unknown=0, NotChecked=0, Total=3192 [2023-12-25 17:39:20,206 INFO L87 Difference]: Start difference. First operand 73656 states and 99441 transitions. Second operand has 57 states, 57 states have (on average 7.192982456140351) internal successors, (410), 56 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:40:00,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:40:00,101 INFO L93 Difference]: Finished difference Result 278916 states and 375953 transitions. [2023-12-25 17:40:00,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 375 states. [2023-12-25 17:40:00,102 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 7.192982456140351) internal successors, (410), 56 states have internal predecessors, (410), 0 states have call successors, (0), 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 150 [2023-12-25 17:40:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:40:00,469 INFO L225 Difference]: With dead ends: 278916 [2023-12-25 17:40:00,470 INFO L226 Difference]: Without dead ends: 246996 [2023-12-25 17:40:00,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78798 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=19817, Invalid=163795, Unknown=0, NotChecked=0, Total=183612 [2023-12-25 17:40:00,502 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 27085 mSDsluCounter, 21249 mSDsCounter, 0 mSdLazyCounter, 17711 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27085 SdHoareTripleChecker+Valid, 21869 SdHoareTripleChecker+Invalid, 17888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 17711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:40:00,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27085 Valid, 21869 Invalid, 17888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [177 Valid, 17711 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-12-25 17:40:00,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246996 states. [2023-12-25 17:40:03,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246996 to 77110. [2023-12-25 17:40:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77110 states, 77109 states have (on average 1.3514894499993515) internal successors, (104212), 77109 states have internal predecessors, (104212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:40:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77110 states to 77110 states and 104212 transitions. [2023-12-25 17:40:03,215 INFO L78 Accepts]: Start accepts. Automaton has 77110 states and 104212 transitions. Word has length 150 [2023-12-25 17:40:03,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:40:03,215 INFO L495 AbstractCegarLoop]: Abstraction has 77110 states and 104212 transitions. [2023-12-25 17:40:03,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.192982456140351) internal successors, (410), 56 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:40:03,215 INFO L276 IsEmpty]: Start isEmpty. Operand 77110 states and 104212 transitions. [2023-12-25 17:40:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-25 17:40:03,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:40:03,228 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] [2023-12-25 17:40:03,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-25 17:40:03,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:40:03,436 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:40:03,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:40:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1990220165, now seen corresponding path program 1 times [2023-12-25 17:40:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:40:03,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387816049] [2023-12-25 17:40:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:40:03,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:40:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:40:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:40:04,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:40:04,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387816049] [2023-12-25 17:40:04,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387816049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 17:40:04,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 17:40:04,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 17:40:04,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131907365] [2023-12-25 17:40:04,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:40:04,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 17:40:04,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:40:04,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 17:40:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:40:04,498 INFO L87 Difference]: Start difference. First operand 77110 states and 104212 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:40:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:40:09,928 INFO L93 Difference]: Finished difference Result 297369 states and 400476 transitions. [2023-12-25 17:40:09,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 17:40:09,928 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-25 17:40:09,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:40:10,267 INFO L225 Difference]: With dead ends: 297369 [2023-12-25 17:40:10,268 INFO L226 Difference]: Without dead ends: 235764 [2023-12-25 17:40:10,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2023-12-25 17:40:10,459 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1731 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:40:10,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 3669 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 17:40:10,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235764 states. Received shutdown request... [2023-12-25 17:40:12,345 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 17:40:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235764 to 85833. [2023-12-25 17:40:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85833 states, 85832 states have (on average 1.3513025445055458) internal successors, (115985), 85832 states have internal predecessors, (115985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:40:13,046 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 17:40:13,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-12-25 17:40:13,047 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-25 17:40:13,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 17:40:13,052 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 17:40:13,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 05:40:13 BoogieIcfgContainer [2023-12-25 17:40:13,053 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 17:40:13,053 INFO L158 Benchmark]: Toolchain (without parser) took 826004.27ms. Allocated memory was 241.2MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 185.4MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB. [2023-12-25 17:40:13,053 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 200.3MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 17:40:13,053 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.10ms. Allocated memory is still 241.2MB. Free memory was 184.9MB in the beginning and 160.2MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-25 17:40:13,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.09ms. Allocated memory is still 241.2MB. Free memory was 160.2MB in the beginning and 140.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-25 17:40:13,053 INFO L158 Benchmark]: Boogie Preprocessor took 153.27ms. Allocated memory is still 241.2MB. Free memory was 140.9MB in the beginning and 129.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-25 17:40:13,053 INFO L158 Benchmark]: RCFGBuilder took 953.77ms. Allocated memory is still 241.2MB. Free memory was 129.1MB in the beginning and 171.0MB in the end (delta: -41.9MB). Peak memory consumption was 33.3MB. Max. memory is 8.0GB. [2023-12-25 17:40:13,053 INFO L158 Benchmark]: TraceAbstraction took 824437.21ms. Allocated memory was 241.2MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 169.9MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB. [2023-12-25 17:40:13,053 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 200.3MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 353.10ms. Allocated memory is still 241.2MB. Free memory was 184.9MB in the beginning and 160.2MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 103.09ms. Allocated memory is still 241.2MB. Free memory was 160.2MB in the beginning and 140.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 153.27ms. Allocated memory is still 241.2MB. Free memory was 140.9MB in the beginning and 129.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 953.77ms. Allocated memory is still 241.2MB. Free memory was 129.1MB in the beginning and 171.0MB in the end (delta: -41.9MB). Peak memory consumption was 33.3MB. Max. memory is 8.0GB. * TraceAbstraction took 824437.21ms. Allocated memory was 241.2MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 169.9MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 158 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 824.4s, OverallIterations: 85, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 600.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 385270 SdHoareTripleChecker+Valid, 146.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 385270 mSDsluCounter, 421118 SdHoareTripleChecker+Invalid, 128.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 388689 mSDsCounter, 1517 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 251390 IncrementalHoareTripleChecker+Invalid, 252907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1517 mSolverCounterUnsat, 32429 mSDtfsCounter, 251390 mSolverCounterSat, 1.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11629 GetRequests, 5028 SyntacticMatches, 7 SemanticMatches, 6594 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247672 ImplicationChecksByTransitivity, 388.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115447occurred in iteration=82, InterpolantAutomatonStates: 5739, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 40.4s AutomataMinimizationTime, 85 MinimizatonAttempts, 1417618 StatesRemovedByMinimization, 83 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.9s SsaConstructionTime, 31.4s SatisfiabilityAnalysisTime, 142.3s InterpolantComputationTime, 13684 NumberOfCodeBlocks, 13684 NumberOfCodeBlocksAsserted, 108 NumberOfCheckSat, 15632 ConstructedInterpolants, 0 QuantifiedInterpolants, 168483 SizeOfPredicates, 1073 NumberOfNonLiveVariables, 33578 ConjunctsInSsa, 2663 ConjunctsInUnsatCore, 122 InterpolantComputations, 71 PerfectInterpolantSequences, 2346/2943 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