/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 12:12:08,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 12:12:08,539 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 12:12:08,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 12:12:08,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 12:12:08,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 12:12:08,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 12:12:08,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 12:12:08,575 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 12:12:08,579 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 12:12:08,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 12:12:08,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 12:12:08,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 12:12:08,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 12:12:08,581 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 12:12:08,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 12:12:08,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 12:12:08,582 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 12:12:08,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 12:12:08,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 12:12:08,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 12:12:08,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 12:12:08,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 12:12:08,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 12:12:08,585 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 12:12:08,585 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 12:12:08,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 12:12:08,585 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 12:12:08,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 12:12:08,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 12:12:08,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 12:12:08,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 12:12:08,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:12:08,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 12:12:08,587 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 12:12:08,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 12:12:08,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 12:12:08,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 12:12:08,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 12:12:08,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 12:12:08,588 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 12:12:08,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 12:12:08,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 12:12:08,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 12:12:08,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 12:12:08,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 12:12:08,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 12:12:08,841 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 12:12:08,841 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 12:12:08,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.i [2023-12-19 12:12:10,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 12:12:10,270 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 12:12:10,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.i [2023-12-19 12:12:10,279 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83037da79/257930e96c6b4fec8798229b0adf3a4e/FLAGac350fbb1 [2023-12-19 12:12:10,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83037da79/257930e96c6b4fec8798229b0adf3a4e [2023-12-19 12:12:10,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 12:12:10,293 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 12:12:10,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 12:12:10,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 12:12:10,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 12:12:10,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aaf1930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10, skipping insertion in model container [2023-12-19 12:12:10,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,338 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 12:12:10,491 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.i[915,928] [2023-12-19 12:12:10,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:12:10,562 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 12:12:10,571 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.i[915,928] [2023-12-19 12:12:10,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:12:10,613 INFO L206 MainTranslator]: Completed translation [2023-12-19 12:12:10,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10 WrapperNode [2023-12-19 12:12:10,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 12:12:10,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 12:12:10,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 12:12:10,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 12:12:10,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,676 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 158 [2023-12-19 12:12:10,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 12:12:10,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 12:12:10,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 12:12:10,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 12:12:10,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,694 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,719 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]. [2023-12-19 12:12:10,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 12:12:10,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 12:12:10,745 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 12:12:10,745 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 12:12:10,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (1/1) ... [2023-12-19 12:12:10,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:12:10,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:12:10,790 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) [2023-12-19 12:12:10,813 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 [2023-12-19 12:12:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 12:12:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 12:12:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 12:12:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 12:12:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 12:12:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 12:12:10,908 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 12:12:10,910 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 12:12:11,356 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 12:12:11,391 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 12:12:11,392 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 12:12:11,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:12:11 BoogieIcfgContainer [2023-12-19 12:12:11,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 12:12:11,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 12:12:11,395 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 12:12:11,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 12:12:11,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:12:10" (1/3) ... [2023-12-19 12:12:11,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d05d52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:12:11, skipping insertion in model container [2023-12-19 12:12:11,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:10" (2/3) ... [2023-12-19 12:12:11,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d05d52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:12:11, skipping insertion in model container [2023-12-19 12:12:11,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:12:11" (3/3) ... [2023-12-19 12:12:11,400 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-10.i [2023-12-19 12:12:11,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 12:12:11,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 12:12:11,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 12:12:11,478 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;@1474b615, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 12:12:11,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 12:12:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 44 states have internal predecessors, (64), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 12:12:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 12:12:11,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:12:11,496 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:12:11,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:12:11,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:12:11,510 INFO L85 PathProgramCache]: Analyzing trace with hash -379473606, now seen corresponding path program 1 times [2023-12-19 12:12:11,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:12:11,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63439943] [2023-12-19 12:12:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:12:11,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:12:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:12:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:12:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:12:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:12:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:12:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:12:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:12:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:12:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:12:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:12:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:12:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:12:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:12:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:12:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:12:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:12:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:12:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:12:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:12:11,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:12:11,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63439943] [2023-12-19 12:12:11,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63439943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:12:11,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:12:11,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:12:11,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183301285] [2023-12-19 12:12:11,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:12:11,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 12:12:11,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:12:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 12:12:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:12:11,973 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 44 states have internal predecessors, (64), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 12:12:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:12:12,026 INFO L93 Difference]: Finished difference Result 125 states and 216 transitions. [2023-12-19 12:12:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 12:12:12,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 118 [2023-12-19 12:12:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:12:12,036 INFO L225 Difference]: With dead ends: 125 [2023-12-19 12:12:12,036 INFO L226 Difference]: Without dead ends: 62 [2023-12-19 12:12:12,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:12:12,061 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:12:12,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:12:12,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-19 12:12:12,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-19 12:12:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 12:12:12,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 95 transitions. [2023-12-19 12:12:12,111 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 95 transitions. Word has length 118 [2023-12-19 12:12:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:12:12,111 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 95 transitions. [2023-12-19 12:12:12,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 12:12:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 95 transitions. [2023-12-19 12:12:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 12:12:12,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:12:12,122 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:12:12,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 12:12:12,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:12:12,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:12:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1308844666, now seen corresponding path program 1 times [2023-12-19 12:12:12,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:12:12,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959335893] [2023-12-19 12:12:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:12:12,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:12:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:12:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:12:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:12:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:12:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:12:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:12:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:12:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:12:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:12:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:12:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:12:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:12:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:12:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:12:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:12:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:12:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:12:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:12:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:12:12,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:12:12,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959335893] [2023-12-19 12:12:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959335893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:12:12,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:12:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 12:12:12,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353924227] [2023-12-19 12:12:12,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:12:12,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 12:12:12,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:12:12,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 12:12:12,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:12:12,660 INFO L87 Difference]: Start difference. First operand 62 states and 95 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:12:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:12:12,861 INFO L93 Difference]: Finished difference Result 185 states and 284 transitions. [2023-12-19 12:12:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 12:12:12,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 118 [2023-12-19 12:12:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:12:12,865 INFO L225 Difference]: With dead ends: 185 [2023-12-19 12:12:12,865 INFO L226 Difference]: Without dead ends: 124 [2023-12-19 12:12:12,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 12:12:12,870 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 92 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:12:12,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 351 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:12:12,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-19 12:12:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 95. [2023-12-19 12:12:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 12:12:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 145 transitions. [2023-12-19 12:12:12,902 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 145 transitions. Word has length 118 [2023-12-19 12:12:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:12:12,903 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 145 transitions. [2023-12-19 12:12:12,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:12:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 145 transitions. [2023-12-19 12:12:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 12:12:12,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:12:12,904 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:12:12,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 12:12:12,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:12:12,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:12:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash -582534747, now seen corresponding path program 1 times [2023-12-19 12:12:12,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:12:12,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272278906] [2023-12-19 12:12:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:12:12,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:12:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:12:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:12:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:12:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:12:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:12:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:12:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:12:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:12:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:12:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:12:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:12:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:12:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:12:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:12:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:12:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:12:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:12:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:12:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:12:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:12:20,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:12:20,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272278906] [2023-12-19 12:12:20,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272278906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:12:20,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:12:20,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:12:20,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200687999] [2023-12-19 12:12:20,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:12:20,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 12:12:20,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:12:20,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 12:12:20,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-19 12:12:20,350 INFO L87 Difference]: Start difference. First operand 95 states and 145 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:12:21,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:12:21,692 INFO L93 Difference]: Finished difference Result 287 states and 425 transitions. [2023-12-19 12:12:21,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 12:12:21,693 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 119 [2023-12-19 12:12:21,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:12:21,695 INFO L225 Difference]: With dead ends: 287 [2023-12-19 12:12:21,695 INFO L226 Difference]: Without dead ends: 226 [2023-12-19 12:12:21,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-12-19 12:12:21,697 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 259 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 12:12:21,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 443 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 12:12:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-19 12:12:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 111. [2023-12-19 12:12:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 72 states have internal predecessors, (98), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 12:12:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 170 transitions. [2023-12-19 12:12:21,712 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 170 transitions. Word has length 119 [2023-12-19 12:12:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:12:21,713 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 170 transitions. [2023-12-19 12:12:21,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:12:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 170 transitions. [2023-12-19 12:12:21,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 12:12:21,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:12:21,715 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:12:21,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 12:12:21,715 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:12:21,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:12:21,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1391881373, now seen corresponding path program 1 times [2023-12-19 12:12:21,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:12:21,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500403674] [2023-12-19 12:12:21,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:12:21,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:12:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:13:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:13:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:13:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:13:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:13:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:13:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:13:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:13:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:13:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:13:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:13:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:13:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:13:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:13:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:13:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:13:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:13:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:13:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:13:19,887 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:13:19,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:13:19,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500403674] [2023-12-19 12:13:19,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500403674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:13:19,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:13:19,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 12:13:19,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885309529] [2023-12-19 12:13:19,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:13:19,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:13:19,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:13:19,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:13:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:13:19,890 INFO L87 Difference]: Start difference. First operand 111 states and 170 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:13:26,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:13:26,616 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2023-12-19 12:13:26,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 12:13:26,617 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 119 [2023-12-19 12:13:26,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:13:26,618 INFO L225 Difference]: With dead ends: 292 [2023-12-19 12:13:26,618 INFO L226 Difference]: Without dead ends: 231 [2023-12-19 12:13:26,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2023-12-19 12:13:26,620 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 353 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 12:13:26,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 459 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 12:13:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-19 12:13:26,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 125. [2023-12-19 12:13:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 86 states have internal predecessors, (120), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 12:13:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 192 transitions. [2023-12-19 12:13:26,634 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 192 transitions. Word has length 119 [2023-12-19 12:13:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:13:26,635 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 192 transitions. [2023-12-19 12:13:26,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:13:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 192 transitions. [2023-12-19 12:13:26,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 12:13:26,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:13:26,636 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:13:26,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 12:13:26,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:13:26,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:13:26,637 INFO L85 PathProgramCache]: Analyzing trace with hash -65381723, now seen corresponding path program 1 times [2023-12-19 12:13:26,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:13:26,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737292683] [2023-12-19 12:13:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:13:26,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:13:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:15:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:15:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:15:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:15:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:15:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:15:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:15:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:15:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:15:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:15:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:15:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:15:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:15:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:15:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:15:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:15:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:15:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:15:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:15:01,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:15:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737292683] [2023-12-19 12:15:01,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737292683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:15:01,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:15:01,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 12:15:01,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048354009] [2023-12-19 12:15:01,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:15:01,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:15:01,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:15:01,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:15:01,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:15:01,699 INFO L87 Difference]: Start difference. First operand 125 states and 192 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 12:15:06,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:15:06,336 INFO L93 Difference]: Finished difference Result 349 states and 517 transitions. [2023-12-19 12:15:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 12:15:06,337 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 119 [2023-12-19 12:15:06,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:15:06,340 INFO L225 Difference]: With dead ends: 349 [2023-12-19 12:15:06,340 INFO L226 Difference]: Without dead ends: 281 [2023-12-19 12:15:06,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2023-12-19 12:15:06,342 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 445 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 12:15:06,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 431 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 12:15:06,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-19 12:15:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 209. [2023-12-19 12:15:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 148 states have (on average 1.3581081081081081) internal successors, (201), 148 states have internal predecessors, (201), 54 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 12:15:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 309 transitions. [2023-12-19 12:15:06,363 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 309 transitions. Word has length 119 [2023-12-19 12:15:06,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:15:06,363 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 309 transitions. [2023-12-19 12:15:06,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 12:15:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 309 transitions. [2023-12-19 12:15:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 12:15:06,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:15:06,365 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:15:06,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 12:15:06,365 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:15:06,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:15:06,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1623222245, now seen corresponding path program 1 times [2023-12-19 12:15:06,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:15:06,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717430328] [2023-12-19 12:15:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:15:06,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:15:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:15:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:15:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:15:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:15:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:15:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:15:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:15:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:15:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:15:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:15:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:15:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:15:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:15:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:15:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:15:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:15:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:15:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:15:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:15:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:15:43,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:15:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717430328] [2023-12-19 12:15:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717430328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:15:43,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:15:43,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:15:43,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898659165] [2023-12-19 12:15:43,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:15:43,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 12:15:43,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:15:43,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 12:15:43,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-19 12:15:43,472 INFO L87 Difference]: Start difference. First operand 209 states and 309 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:15:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:15:47,101 INFO L93 Difference]: Finished difference Result 421 states and 616 transitions. [2023-12-19 12:15:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 12:15:47,102 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 119 [2023-12-19 12:15:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:15:47,104 INFO L225 Difference]: With dead ends: 421 [2023-12-19 12:15:47,104 INFO L226 Difference]: Without dead ends: 279 [2023-12-19 12:15:47,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2023-12-19 12:15:47,105 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 220 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 12:15:47,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 521 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 12:15:47,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-19 12:15:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 211. [2023-12-19 12:15:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 150 states have (on average 1.3533333333333333) internal successors, (203), 150 states have internal predecessors, (203), 54 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 12:15:47,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 311 transitions. [2023-12-19 12:15:47,126 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 311 transitions. Word has length 119 [2023-12-19 12:15:47,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:15:47,126 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 311 transitions. [2023-12-19 12:15:47,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:15:47,127 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 311 transitions. [2023-12-19 12:15:47,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 12:15:47,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:15:47,128 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:15:47,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 12:15:47,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:15:47,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:15:47,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2124084647, now seen corresponding path program 1 times [2023-12-19 12:15:47,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:15:47,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952938232] [2023-12-19 12:15:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:15:47,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:15:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:16:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:16:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:16:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:16:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:16:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:16:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:16:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:16:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:16:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:16:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:16:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:16:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:16:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:16:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:16:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:16:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:16:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:16:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:16:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:16:00,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:16:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952938232] [2023-12-19 12:16:00,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952938232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:16:00,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:16:00,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 12:16:00,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070966215] [2023-12-19 12:16:00,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:16:00,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 12:16:00,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:16:00,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 12:16:00,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-19 12:16:00,474 INFO L87 Difference]: Start difference. First operand 211 states and 311 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 12:16:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:16:02,082 INFO L93 Difference]: Finished difference Result 403 states and 592 transitions. [2023-12-19 12:16:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 12:16:02,083 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 119 [2023-12-19 12:16:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:16:02,084 INFO L225 Difference]: With dead ends: 403 [2023-12-19 12:16:02,084 INFO L226 Difference]: Without dead ends: 342 [2023-12-19 12:16:02,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2023-12-19 12:16:02,086 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 592 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 12:16:02,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 508 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 12:16:02,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-19 12:16:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 288. [2023-12-19 12:16:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 206 states have (on average 1.354368932038835) internal successors, (279), 206 states have internal predecessors, (279), 72 states have call successors, (72), 9 states have call predecessors, (72), 9 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-19 12:16:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 423 transitions. [2023-12-19 12:16:02,110 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 423 transitions. Word has length 119 [2023-12-19 12:16:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:16:02,111 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 423 transitions. [2023-12-19 12:16:02,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 12:16:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 423 transitions. [2023-12-19 12:16:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 12:16:02,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:16:02,112 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:16:02,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 12:16:02,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:16:02,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:16:02,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1314738021, now seen corresponding path program 1 times [2023-12-19 12:16:02,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:16:02,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782150117] [2023-12-19 12:16:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:16:02,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:16:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:18:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:18:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:18:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:18:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:18:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:18:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:18:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:18:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:18:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:18:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:18:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:18:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:18:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:18:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:18:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:18:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:18:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:18:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:18:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:18:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:18:03,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782150117] [2023-12-19 12:18:03,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782150117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:18:03,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:18:03,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 12:18:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108127975] [2023-12-19 12:18:03,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:18:03,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:18:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:18:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:18:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:18:03,737 INFO L87 Difference]: Start difference. First operand 288 states and 423 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:18:12,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:18:14,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:18:14,294 INFO L93 Difference]: Finished difference Result 570 states and 829 transitions. [2023-12-19 12:18:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 12:18:14,295 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 119 [2023-12-19 12:18:14,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:18:14,297 INFO L225 Difference]: With dead ends: 570 [2023-12-19 12:18:14,297 INFO L226 Difference]: Without dead ends: 509 [2023-12-19 12:18:14,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2023-12-19 12:18:14,299 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 378 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-19 12:18:14,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 572 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 660 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2023-12-19 12:18:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-12-19 12:18:14,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 363. [2023-12-19 12:18:14,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 260 states have (on average 1.353846153846154) internal successors, (352), 260 states have internal predecessors, (352), 90 states have call successors, (90), 12 states have call predecessors, (90), 12 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-19 12:18:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 532 transitions. [2023-12-19 12:18:14,346 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 532 transitions. Word has length 119 [2023-12-19 12:18:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:18:14,347 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 532 transitions. [2023-12-19 12:18:14,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:18:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 532 transitions. [2023-12-19 12:18:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 12:18:14,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:18:14,349 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:18:14,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 12:18:14,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:18:14,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:18:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1653729625, now seen corresponding path program 1 times [2023-12-19 12:18:14,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:18:14,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319523389] [2023-12-19 12:18:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:18:14,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:18:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:20:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:20:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:20:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:20:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:20:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:20:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:20:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:20:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:20:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:20:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:20:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:20:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:20:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:20:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:20:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:20:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:20:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:20:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:20:04,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:20:04,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319523389] [2023-12-19 12:20:04,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319523389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:20:04,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:20:04,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-19 12:20:04,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709465252] [2023-12-19 12:20:04,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:20:04,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 12:20:04,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:20:04,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 12:20:04,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-12-19 12:20:04,654 INFO L87 Difference]: Start difference. First operand 363 states and 532 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 12:20:16,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:20:19,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:20:23,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:20:23,408 INFO L93 Difference]: Finished difference Result 455 states and 666 transitions. [2023-12-19 12:20:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 12:20:23,408 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 119 [2023-12-19 12:20:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:20:23,410 INFO L225 Difference]: With dead ends: 455 [2023-12-19 12:20:23,411 INFO L226 Difference]: Without dead ends: 394 [2023-12-19 12:20:23,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2023-12-19 12:20:23,412 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 554 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 113 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:20:23,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 368 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 643 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2023-12-19 12:20:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-12-19 12:20:23,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 278. [2023-12-19 12:20:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 196 states have (on average 1.3418367346938775) internal successors, (263), 196 states have internal predecessors, (263), 72 states have call successors, (72), 9 states have call predecessors, (72), 9 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-19 12:20:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 407 transitions. [2023-12-19 12:20:23,437 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 407 transitions. Word has length 119 [2023-12-19 12:20:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:20:23,437 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 407 transitions. [2023-12-19 12:20:23,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 12:20:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 407 transitions. [2023-12-19 12:20:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 12:20:23,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:20:23,439 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:20:23,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 12:20:23,439 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:20:23,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:20:23,439 INFO L85 PathProgramCache]: Analyzing trace with hash 34874343, now seen corresponding path program 1 times [2023-12-19 12:20:23,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:20:23,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439385212] [2023-12-19 12:20:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:20:23,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:20:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:20:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:20:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:20:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:20:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:20:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:20:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:20:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:20:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:20:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:20:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:20:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:20:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:20:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:20:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:20:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:20:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:20:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:20:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:20:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:20:28,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439385212] [2023-12-19 12:20:28,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439385212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:20:28,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:20:28,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:20:28,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651630051] [2023-12-19 12:20:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:20:28,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 12:20:28,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:20:28,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 12:20:28,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-19 12:20:28,426 INFO L87 Difference]: Start difference. First operand 278 states and 407 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:20:29,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:20:29,351 INFO L93 Difference]: Finished difference Result 458 states and 668 transitions. [2023-12-19 12:20:29,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 12:20:29,351 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 119 [2023-12-19 12:20:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:20:29,353 INFO L225 Difference]: With dead ends: 458 [2023-12-19 12:20:29,353 INFO L226 Difference]: Without dead ends: 316 [2023-12-19 12:20:29,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2023-12-19 12:20:29,355 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 159 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 12:20:29,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 443 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 12:20:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-19 12:20:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 211. [2023-12-19 12:20:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 150 states have (on average 1.3533333333333333) internal successors, (203), 150 states have internal predecessors, (203), 54 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 12:20:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 311 transitions. [2023-12-19 12:20:29,373 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 311 transitions. Word has length 119 [2023-12-19 12:20:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:20:29,376 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 311 transitions. [2023-12-19 12:20:29,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-19 12:20:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 311 transitions. [2023-12-19 12:20:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 12:20:29,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:20:29,378 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:20:29,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 12:20:29,378 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:20:29,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:20:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash 385622693, now seen corresponding path program 1 times [2023-12-19 12:20:29,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:20:29,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018462574] [2023-12-19 12:20:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:20:29,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:20:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:20:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:20:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:20:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:20:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:20:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:20:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:20:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:20:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:20:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:20:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:20:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:20:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:20:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:20:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:20:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:20:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:20:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:20:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:20:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:20:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:20:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018462574] [2023-12-19 12:20:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018462574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:20:52,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:20:52,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 12:20:52,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926073433] [2023-12-19 12:20:52,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:20:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 12:20:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:20:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 12:20:52,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-19 12:20:52,756 INFO L87 Difference]: Start difference. First operand 211 states and 311 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 12:20:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:20:57,714 INFO L93 Difference]: Finished difference Result 479 states and 687 transitions. [2023-12-19 12:20:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 12:20:57,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 120 [2023-12-19 12:20:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:20:57,717 INFO L225 Difference]: With dead ends: 479 [2023-12-19 12:20:57,717 INFO L226 Difference]: Without dead ends: 418 [2023-12-19 12:20:57,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=274, Invalid=848, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 12:20:57,719 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 807 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 12:20:57,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 504 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 12:20:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-19 12:20:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 217. [2023-12-19 12:20:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 156 states have (on average 1.358974358974359) internal successors, (212), 156 states have internal predecessors, (212), 54 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 12:20:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 320 transitions. [2023-12-19 12:20:57,738 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 320 transitions. Word has length 120 [2023-12-19 12:20:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:20:57,739 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 320 transitions. [2023-12-19 12:20:57,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 12:20:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 320 transitions. [2023-12-19 12:20:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 12:20:57,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:20:57,740 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:20:57,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 12:20:57,740 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:20:57,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:20:57,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1065681063, now seen corresponding path program 1 times [2023-12-19 12:20:57,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:20:57,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491449714] [2023-12-19 12:20:57,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:20:57,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:20:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:23:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:23:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:23:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:23:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:23:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:23:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:23:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:23:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:23:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:23:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:23:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:23:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:23:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:23:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:23:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:23:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:23:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:23:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:23:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:23:12,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:23:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491449714] [2023-12-19 12:23:12,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491449714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:23:12,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:23:12,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-19 12:23:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178921774] [2023-12-19 12:23:12,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:23:12,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 12:23:12,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:23:12,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 12:23:12,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-12-19 12:23:12,701 INFO L87 Difference]: Start difference. First operand 217 states and 320 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 12:23:28,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:23:32,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:23:33,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:23:35,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:23:42,411 WARN L293 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 314 DAG size of output: 191 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:23:49,970 WARN L293 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 312 DAG size of output: 190 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:23:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:23:51,620 INFO L93 Difference]: Finished difference Result 481 states and 680 transitions. [2023-12-19 12:23:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 12:23:51,620 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 120 [2023-12-19 12:23:51,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:23:51,622 INFO L225 Difference]: With dead ends: 481 [2023-12-19 12:23:51,622 INFO L226 Difference]: Without dead ends: 420 [2023-12-19 12:23:51,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=475, Invalid=1595, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 12:23:51,624 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 1139 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 240 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-19 12:23:51,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 657 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1314 Invalid, 2 Unknown, 0 Unchecked, 14.5s Time] [2023-12-19 12:23:51,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-19 12:23:51,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 234. [2023-12-19 12:23:51,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 170 states have (on average 1.3470588235294119) internal successors, (229), 170 states have internal predecessors, (229), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 12:23:51,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 337 transitions. [2023-12-19 12:23:51,640 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 337 transitions. Word has length 120 [2023-12-19 12:23:51,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:23:51,640 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 337 transitions. [2023-12-19 12:23:51,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 12:23:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 337 transitions. [2023-12-19 12:23:51,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 12:23:51,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:23:51,642 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:23:51,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 12:23:51,642 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:23:51,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:23:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash -762502747, now seen corresponding path program 1 times [2023-12-19 12:23:51,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:23:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413996944] [2023-12-19 12:23:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:23:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:23:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 12:25:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 12:25:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 12:25:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 12:25:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 12:25:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 12:25:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 12:25:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 12:25:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 12:25:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 12:25:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 12:25:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 12:25:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 12:25:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 12:25:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 12:25:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 12:25:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 12:25:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 12:25:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:25:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-19 12:25:20,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:25:20,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413996944] [2023-12-19 12:25:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413996944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:25:20,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:25:20,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-19 12:25:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580464385] [2023-12-19 12:25:20,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:25:20,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 12:25:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:25:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 12:25:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-19 12:25:20,665 INFO L87 Difference]: Start difference. First operand 234 states and 337 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 12:25:23,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 12:25:32,402 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 183 DAG size of output: 138 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:25:50,476 WARN L293 SmtUtils]: Spent 17.91s on a formula simplification. DAG size of input: 237 DAG size of output: 193 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-19 12:26:21,036 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 [2023-12-19 12:26:22,237 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 12:26:22,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-19 12:26:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 12:26:22,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2023-12-19 12:26:22,304 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 104 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 12:26:22,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 190 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 12:26:22,306 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 12:26:22,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 12:26:22,306 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (234states) and FLOYD_HOARE automaton (currently 13 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-19 12:26:22,310 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:26:22,312 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 12:26:22,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:26:22 BoogieIcfgContainer [2023-12-19 12:26:22,314 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 12:26:22,314 INFO L158 Benchmark]: Toolchain (without parser) took 852021.56ms. Allocated memory was 326.1MB in the beginning and 1.0GB in the end (delta: 685.8MB). Free memory was 280.0MB in the beginning and 677.5MB in the end (delta: -397.5MB). Peak memory consumption was 288.8MB. Max. memory is 8.0GB. [2023-12-19 12:26:22,314 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 196.1MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 12:26:22,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.58ms. Allocated memory is still 326.1MB. Free memory was 280.0MB in the beginning and 265.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 12:26:22,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.40ms. Allocated memory is still 326.1MB. Free memory was 265.3MB in the beginning and 261.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 12:26:22,315 INFO L158 Benchmark]: Boogie Preprocessor took 67.16ms. Allocated memory is still 326.1MB. Free memory was 261.1MB in the beginning and 253.8MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-19 12:26:22,315 INFO L158 Benchmark]: RCFGBuilder took 647.34ms. Allocated memory is still 326.1MB. Free memory was 253.8MB in the beginning and 228.1MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-19 12:26:22,315 INFO L158 Benchmark]: TraceAbstraction took 850919.27ms. Allocated memory was 326.1MB in the beginning and 1.0GB in the end (delta: 685.8MB). Free memory was 227.1MB in the beginning and 677.5MB in the end (delta: -450.5MB). Peak memory consumption was 236.3MB. Max. memory is 8.0GB. [2023-12-19 12:26:22,316 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 196.1MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 319.58ms. Allocated memory is still 326.1MB. Free memory was 280.0MB in the beginning and 265.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.40ms. Allocated memory is still 326.1MB. Free memory was 265.3MB in the beginning and 261.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.16ms. Allocated memory is still 326.1MB. Free memory was 261.1MB in the beginning and 253.8MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 647.34ms. Allocated memory is still 326.1MB. Free memory was 253.8MB in the beginning and 228.1MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 850919.27ms. Allocated memory was 326.1MB in the beginning and 1.0GB in the end (delta: 685.8MB). Free memory was 227.1MB in the beginning and 677.5MB in the end (delta: -450.5MB). Peak memory consumption was 236.3MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (234states) and FLOYD_HOARE automaton (currently 13 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 850.9s, OverallIterations: 13, TraceHistogramMax: 18, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 154.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 5102 SdHoareTripleChecker+Valid, 38.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5102 mSDsluCounter, 5539 SdHoareTripleChecker+Invalid, 36.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4478 mSDsCounter, 1063 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7184 IncrementalHoareTripleChecker+Invalid, 8251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1063 mSolverCounterUnsat, 1061 mSDtfsCounter, 7184 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 883 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 111.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=363occurred in iteration=8, InterpolantAutomatonStates: 221, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1198 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 695.3s InterpolantComputationTime, 1548 NumberOfCodeBlocks, 1548 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1535 ConstructedInterpolants, 0 QuantifiedInterpolants, 39081 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 7956/7956 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