/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-66.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 22:18:51,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 22:18:51,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 22:18:51,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 22:18:51,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 22:18:51,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 22:18:51,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 22:18:51,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 22:18:51,338 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 22:18:51,338 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 22:18:51,339 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 22:18:51,339 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 22:18:51,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 22:18:51,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 22:18:51,343 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 22:18:51,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 22:18:51,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 22:18:51,347 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 22:18:51,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 22:18:51,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 22:18:51,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 22:18:51,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 22:18:51,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 22:18:51,349 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 22:18:51,349 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 22:18:51,349 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 22:18:51,349 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 22:18:51,349 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 22:18:51,350 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 22:18:51,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 22:18:51,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 22:18:51,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 22:18:51,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:18:51,351 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 22:18:51,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 22:18:51,351 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 22:18:51,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 22:18:51,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 22:18:51,352 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 22:18:51,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 22:18:51,352 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 22:18:51,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 22:18:51,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 22:18:51,352 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 22:18:51,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 22:18:51,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 22:18:51,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 22:18:51,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 22:18:51,577 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 22:18:51,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-66.i [2023-12-20 22:18:52,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 22:18:52,794 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 22:18:52,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-66.i [2023-12-20 22:18:52,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c57b9602/3df4c0a18c4941dcb19111fa70ab3d43/FLAG76ab6e7da [2023-12-20 22:18:52,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c57b9602/3df4c0a18c4941dcb19111fa70ab3d43 [2023-12-20 22:18:52,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 22:18:52,818 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 22:18:52,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 22:18:52,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 22:18:52,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 22:18:52,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:18:52" (1/1) ... [2023-12-20 22:18:52,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3966374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:52, skipping insertion in model container [2023-12-20 22:18:52,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:18:52" (1/1) ... [2023-12-20 22:18:52,851 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 22:18:52,953 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_floatingpointinfluence_no-floats_file-66.i[916,929] [2023-12-20 22:18:52,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:18:52,984 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 22:18:52,992 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_floatingpointinfluence_no-floats_file-66.i[916,929] [2023-12-20 22:18:53,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:18:53,022 INFO L206 MainTranslator]: Completed translation [2023-12-20 22:18:53,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53 WrapperNode [2023-12-20 22:18:53,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 22:18:53,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 22:18:53,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 22:18:53,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 22:18:53,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,075 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 101 [2023-12-20 22:18:53,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 22:18:53,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 22:18:53,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 22:18:53,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 22:18:53,089 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,091 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,101 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 22:18:53,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 22:18:53,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 22:18:53,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 22:18:53,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 22:18:53,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (1/1) ... [2023-12-20 22:18:53,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:18:53,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:18:53,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 22:18:53,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 22:18:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 22:18:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 22:18:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 22:18:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 22:18:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 22:18:53,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 22:18:53,257 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 22:18:53,259 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 22:18:53,496 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 22:18:53,517 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 22:18:53,517 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 22:18:53,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:18:53 BoogieIcfgContainer [2023-12-20 22:18:53,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 22:18:53,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 22:18:53,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 22:18:53,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 22:18:53,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 10:18:52" (1/3) ... [2023-12-20 22:18:53,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fcdde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:18:53, skipping insertion in model container [2023-12-20 22:18:53,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:18:53" (2/3) ... [2023-12-20 22:18:53,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fcdde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:18:53, skipping insertion in model container [2023-12-20 22:18:53,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:18:53" (3/3) ... [2023-12-20 22:18:53,523 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-66.i [2023-12-20 22:18:53,535 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 22:18:53,535 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 22:18:53,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 22:18:53,570 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;@2d3b7f51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 22:18:53,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 22:18:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 22:18:53,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 22:18:53,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:18:53,582 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:18:53,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:18:53,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:18:53,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1944780512, now seen corresponding path program 1 times [2023-12-20 22:18:53,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:18:53,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317872606] [2023-12-20 22:18:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:18:53,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:18:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:18:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:18:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:18:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:18:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:18:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:18:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:18:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:18:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:18:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:18:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:18:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:18:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:18:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:18:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 22:18:53,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:18:53,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317872606] [2023-12-20 22:18:53,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317872606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:18:53,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:18:53,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 22:18:53,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240724321] [2023-12-20 22:18:53,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:18:53,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 22:18:53,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:18:53,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 22:18:53,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:18:53,791 INFO L87 Difference]: Start difference. First operand has 39 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-20 22:18:53,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:18:53,814 INFO L93 Difference]: Finished difference Result 75 states and 132 transitions. [2023-12-20 22:18:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 22:18:53,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 85 [2023-12-20 22:18:53,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:18:53,820 INFO L225 Difference]: With dead ends: 75 [2023-12-20 22:18:53,820 INFO L226 Difference]: Without dead ends: 37 [2023-12-20 22:18:53,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:18:53,825 INFO L413 NwaCegarLoop]: 52 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, 52 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 [2023-12-20 22:18:53,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:18:53,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-20 22:18:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-20 22:18:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-20 22:18:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 55 transitions. [2023-12-20 22:18:53,854 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 55 transitions. Word has length 85 [2023-12-20 22:18:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:18:53,855 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 55 transitions. [2023-12-20 22:18:53,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-20 22:18:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2023-12-20 22:18:53,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 22:18:53,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:18:53,858 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:18:53,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 22:18:53,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:18:53,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:18:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1661919200, now seen corresponding path program 1 times [2023-12-20 22:18:53,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:18:53,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251638224] [2023-12-20 22:18:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:18:53,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:18:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:18:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:18:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:18:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:18:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:18:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:18:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:18:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:18:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:18:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:18:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:18:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:18:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:18:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:18:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 22:18:54,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:18:54,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251638224] [2023-12-20 22:18:54,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251638224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:18:54,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:18:54,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 22:18:54,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487150777] [2023-12-20 22:18:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:18:54,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 22:18:54,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:18:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 22:18:54,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:18:54,270 INFO L87 Difference]: Start difference. First operand 37 states and 55 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:18:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:18:54,328 INFO L93 Difference]: Finished difference Result 109 states and 163 transitions. [2023-12-20 22:18:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 22:18:54,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 85 [2023-12-20 22:18:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:18:54,333 INFO L225 Difference]: With dead ends: 109 [2023-12-20 22:18:54,333 INFO L226 Difference]: Without dead ends: 73 [2023-12-20 22:18:54,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:18:54,334 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 26 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:18:54,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 94 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:18:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-20 22:18:54,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2023-12-20 22:18:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-20 22:18:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 104 transitions. [2023-12-20 22:18:54,350 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 104 transitions. Word has length 85 [2023-12-20 22:18:54,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:18:54,350 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 104 transitions. [2023-12-20 22:18:54,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:18:54,350 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 104 transitions. [2023-12-20 22:18:54,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 22:18:54,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:18:54,351 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:18:54,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 22:18:54,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:18:54,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:18:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash -20088315, now seen corresponding path program 1 times [2023-12-20 22:18:54,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:18:54,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754372227] [2023-12-20 22:18:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:18:54,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:18:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:18:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:18:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:18:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:18:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:18:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:18:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:18:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:18:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:18:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:18:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:18:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:18:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:18:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:18:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 22:18:54,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:18:54,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754372227] [2023-12-20 22:18:54,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754372227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:18:54,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:18:54,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 22:18:54,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832789205] [2023-12-20 22:18:54,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:18:54,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 22:18:54,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:18:54,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 22:18:54,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 22:18:54,752 INFO L87 Difference]: Start difference. First operand 70 states and 104 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-20 22:18:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:18:54,906 INFO L93 Difference]: Finished difference Result 183 states and 271 transitions. [2023-12-20 22:18:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 22:18:54,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2023-12-20 22:18:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:18:54,911 INFO L225 Difference]: With dead ends: 183 [2023-12-20 22:18:54,911 INFO L226 Difference]: Without dead ends: 114 [2023-12-20 22:18:54,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 22:18:54,916 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 68 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 22:18:54,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 162 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 22:18:54,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-20 22:18:54,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2023-12-20 22:18:54,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 58 states have internal predecessors, (71), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-20 22:18:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 155 transitions. [2023-12-20 22:18:54,943 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 155 transitions. Word has length 86 [2023-12-20 22:18:54,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:18:54,943 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 155 transitions. [2023-12-20 22:18:54,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-20 22:18:54,945 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 155 transitions. [2023-12-20 22:18:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 22:18:54,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:18:54,947 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:18:54,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 22:18:54,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:18:54,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:18:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash -20147897, now seen corresponding path program 1 times [2023-12-20 22:18:54,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:18:54,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030802018] [2023-12-20 22:18:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:18:54,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:18:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:18:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:18:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:18:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:18:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:18:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:18:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:18:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:18:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:18:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:18:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:18:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:18:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:18:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:18:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:18:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 22:18:57,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:18:57,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030802018] [2023-12-20 22:18:57,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030802018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:18:57,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:18:57,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 22:18:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025776493] [2023-12-20 22:18:57,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:18:57,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 22:18:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:18:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 22:18:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-20 22:18:57,806 INFO L87 Difference]: Start difference. First operand 104 states and 155 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-20 22:18:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:18:58,309 INFO L93 Difference]: Finished difference Result 110 states and 161 transitions. [2023-12-20 22:18:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 22:18:58,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2023-12-20 22:18:58,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:18:58,311 INFO L225 Difference]: With dead ends: 110 [2023-12-20 22:18:58,311 INFO L226 Difference]: Without dead ends: 108 [2023-12-20 22:18:58,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-20 22:18:58,312 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 54 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:18:58,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 197 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 22:18:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-20 22:18:58,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2023-12-20 22:18:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-20 22:18:58,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 157 transitions. [2023-12-20 22:18:58,323 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 157 transitions. Word has length 86 [2023-12-20 22:18:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:18:58,323 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 157 transitions. [2023-12-20 22:18:58,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-20 22:18:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 157 transitions. [2023-12-20 22:18:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 22:18:58,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:18:58,324 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:18:58,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 22:18:58,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:18:58,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:18:58,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1204557765, now seen corresponding path program 1 times [2023-12-20 22:18:58,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:18:58,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746678537] [2023-12-20 22:18:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:18:58,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:18:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:19:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:19:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:19:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:19:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:19:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:19:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:19:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:19:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:19:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:19:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:19:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:19:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:19:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:19:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 22:19:01,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:19:01,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746678537] [2023-12-20 22:19:01,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746678537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:19:01,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:19:01,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 22:19:01,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149576191] [2023-12-20 22:19:01,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:19:01,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 22:19:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:19:01,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 22:19:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-20 22:19:01,787 INFO L87 Difference]: Start difference. First operand 106 states and 157 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:19:02,781 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2023-12-20 22:19:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 22:19:02,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 86 [2023-12-20 22:19:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:19:02,783 INFO L225 Difference]: With dead ends: 146 [2023-12-20 22:19:02,783 INFO L226 Difference]: Without dead ends: 144 [2023-12-20 22:19:02,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-12-20 22:19:02,784 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 110 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 22:19:02,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 231 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 22:19:02,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-20 22:19:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2023-12-20 22:19:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-20 22:19:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 169 transitions. [2023-12-20 22:19:02,795 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 169 transitions. Word has length 86 [2023-12-20 22:19:02,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:19:02,796 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 169 transitions. [2023-12-20 22:19:02,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 169 transitions. [2023-12-20 22:19:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 22:19:02,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:19:02,797 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:19:02,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 22:19:02,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:19:02,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:19:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1206404807, now seen corresponding path program 1 times [2023-12-20 22:19:02,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:19:02,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144126765] [2023-12-20 22:19:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:19:02,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:19:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:19:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:19:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:19:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:19:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:19:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:19:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:19:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:19:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:19:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:19:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:19:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:19:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:19:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:19:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 22:19:02,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:19:02,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144126765] [2023-12-20 22:19:02,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144126765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:19:02,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:19:02,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 22:19:02,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993801357] [2023-12-20 22:19:02,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:19:02,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 22:19:02,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:19:02,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 22:19:02,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 22:19:02,898 INFO L87 Difference]: Start difference. First operand 113 states and 169 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:02,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:19:02,973 INFO L93 Difference]: Finished difference Result 186 states and 266 transitions. [2023-12-20 22:19:02,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 22:19:02,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 86 [2023-12-20 22:19:02,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:19:02,977 INFO L225 Difference]: With dead ends: 186 [2023-12-20 22:19:02,977 INFO L226 Difference]: Without dead ends: 148 [2023-12-20 22:19:02,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 22:19:02,980 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 61 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 22:19:02,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 140 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 22:19:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-20 22:19:03,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2023-12-20 22:19:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 77 states have internal predecessors, (93), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-20 22:19:03,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 177 transitions. [2023-12-20 22:19:03,007 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 177 transitions. Word has length 86 [2023-12-20 22:19:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:19:03,008 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 177 transitions. [2023-12-20 22:19:03,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:03,008 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 177 transitions. [2023-12-20 22:19:03,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 22:19:03,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:19:03,010 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:19:03,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 22:19:03,010 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:19:03,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:19:03,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1261816067, now seen corresponding path program 1 times [2023-12-20 22:19:03,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:19:03,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388546332] [2023-12-20 22:19:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:19:03,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:19:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:19:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:19:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:19:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:19:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:19:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:19:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:19:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:19:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:19:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:19:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:19:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:19:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:19:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:19:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 22:19:09,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:19:09,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388546332] [2023-12-20 22:19:09,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388546332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:19:09,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:19:09,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 22:19:09,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391737067] [2023-12-20 22:19:09,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:19:09,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 22:19:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:19:09,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 22:19:09,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 22:19:09,524 INFO L87 Difference]: Start difference. First operand 126 states and 177 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:19:10,149 INFO L93 Difference]: Finished difference Result 165 states and 221 transitions. [2023-12-20 22:19:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 22:19:10,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 86 [2023-12-20 22:19:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:19:10,150 INFO L225 Difference]: With dead ends: 165 [2023-12-20 22:19:10,150 INFO L226 Difference]: Without dead ends: 163 [2023-12-20 22:19:10,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-12-20 22:19:10,151 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 93 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:19:10,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 226 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 22:19:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-20 22:19:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 131. [2023-12-20 22:19:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 81 states have internal predecessors, (98), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-20 22:19:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 182 transitions. [2023-12-20 22:19:10,191 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 182 transitions. Word has length 86 [2023-12-20 22:19:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:19:10,191 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 182 transitions. [2023-12-20 22:19:10,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:10,191 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 182 transitions. [2023-12-20 22:19:10,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 22:19:10,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:19:10,192 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:19:10,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 22:19:10,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:19:10,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:19:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1263663109, now seen corresponding path program 1 times [2023-12-20 22:19:10,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:19:10,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628208332] [2023-12-20 22:19:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:19:10,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:19:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:19:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:19:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:19:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:19:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:19:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:19:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:19:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:19:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:19:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:19:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:19:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:19:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:19:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:19:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 22:19:11,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:19:11,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628208332] [2023-12-20 22:19:11,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628208332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:19:11,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:19:11,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 22:19:11,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892248962] [2023-12-20 22:19:11,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:19:11,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 22:19:11,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:19:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 22:19:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-20 22:19:11,613 INFO L87 Difference]: Start difference. First operand 131 states and 182 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:19:12,136 INFO L93 Difference]: Finished difference Result 206 states and 280 transitions. [2023-12-20 22:19:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 22:19:12,136 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 86 [2023-12-20 22:19:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:19:12,137 INFO L225 Difference]: With dead ends: 206 [2023-12-20 22:19:12,137 INFO L226 Difference]: Without dead ends: 165 [2023-12-20 22:19:12,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-12-20 22:19:12,138 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 75 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:19:12,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 259 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 22:19:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-20 22:19:12,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 129. [2023-12-20 22:19:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-20 22:19:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 178 transitions. [2023-12-20 22:19:12,152 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 178 transitions. Word has length 86 [2023-12-20 22:19:12,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:19:12,152 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 178 transitions. [2023-12-20 22:19:12,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:12,152 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 178 transitions. [2023-12-20 22:19:12,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 22:19:12,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:19:12,153 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:19:12,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 22:19:12,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:19:12,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:19:12,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1313450494, now seen corresponding path program 1 times [2023-12-20 22:19:12,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:19:12,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410902218] [2023-12-20 22:19:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:19:12,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:19:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:19:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:19:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:19:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:19:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:19:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:19:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:19:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:19:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:19:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:19:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:19:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:19:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:19:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:19:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 22:19:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:19:13,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410902218] [2023-12-20 22:19:13,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410902218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:19:13,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:19:13,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 22:19:13,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779620319] [2023-12-20 22:19:13,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:19:13,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 22:19:13,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:19:13,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 22:19:13,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-20 22:19:13,818 INFO L87 Difference]: Start difference. First operand 129 states and 178 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:19:14,596 INFO L93 Difference]: Finished difference Result 154 states and 206 transitions. [2023-12-20 22:19:14,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 22:19:14,596 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 87 [2023-12-20 22:19:14,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:19:14,597 INFO L225 Difference]: With dead ends: 154 [2023-12-20 22:19:14,597 INFO L226 Difference]: Without dead ends: 152 [2023-12-20 22:19:14,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-12-20 22:19:14,598 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 73 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 22:19:14,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 229 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 22:19:14,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-20 22:19:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 131. [2023-12-20 22:19:14,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 81 states have internal predecessors, (97), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-20 22:19:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 181 transitions. [2023-12-20 22:19:14,628 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 181 transitions. Word has length 87 [2023-12-20 22:19:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:19:14,630 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 181 transitions. [2023-12-20 22:19:14,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 181 transitions. [2023-12-20 22:19:14,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 22:19:14,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:19:14,632 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:19:14,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 22:19:14,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:19:14,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:19:14,632 INFO L85 PathProgramCache]: Analyzing trace with hash 461556868, now seen corresponding path program 1 times [2023-12-20 22:19:14,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:19:14,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084888996] [2023-12-20 22:19:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:19:14,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:19:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:19:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:19:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:19:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:19:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:19:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:19:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:19:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:19:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:19:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:19:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:19:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:19:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:19:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:19:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-20 22:19:17,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:19:17,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084888996] [2023-12-20 22:19:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084888996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:19:17,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:19:17,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 22:19:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778677984] [2023-12-20 22:19:17,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:19:17,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 22:19:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:19:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 22:19:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-20 22:19:17,370 INFO L87 Difference]: Start difference. First operand 131 states and 181 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:19:18,382 INFO L93 Difference]: Finished difference Result 150 states and 200 transitions. [2023-12-20 22:19:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 22:19:18,382 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 87 [2023-12-20 22:19:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:19:18,383 INFO L225 Difference]: With dead ends: 150 [2023-12-20 22:19:18,383 INFO L226 Difference]: Without dead ends: 148 [2023-12-20 22:19:18,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-12-20 22:19:18,384 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 77 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 22:19:18,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 228 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 22:19:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-20 22:19:18,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 129. [2023-12-20 22:19:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-20 22:19:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 178 transitions. [2023-12-20 22:19:18,400 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 178 transitions. Word has length 87 [2023-12-20 22:19:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:19:18,401 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 178 transitions. [2023-12-20 22:19:18,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 22:19:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 178 transitions. [2023-12-20 22:19:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-20 22:19:18,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:19:18,402 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:19:18,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 22:19:18,402 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:19:18,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:19:18,403 INFO L85 PathProgramCache]: Analyzing trace with hash 324235561, now seen corresponding path program 1 times [2023-12-20 22:19:18,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:19:18,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610382230] [2023-12-20 22:19:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:19:18,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:19:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:19:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:19:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:19:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:19:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:19:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:19:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:19:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:19:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:19:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:19:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:19:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:19:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:19:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:19:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-20 22:19:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 22:19:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 22:19:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 22:19:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 22:19:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-20 22:19:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-20 22:19:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 22:19:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 22:19:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 22:19:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 22:19:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-20 22:19:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 22:19:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 22:19:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-20 22:19:21,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:19:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610382230] [2023-12-20 22:19:21,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610382230] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 22:19:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930919276] [2023-12-20 22:19:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:19:21,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:19:21,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:19:21,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:19:21,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 22:19:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:21,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 22:19:21,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:19:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 914 proven. 33 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-12-20 22:19:22,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:19:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 1433 trivial. 0 not checked. [2023-12-20 22:19:22,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930919276] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 22:19:22,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 22:19:22,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2023-12-20 22:19:22,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934489593] [2023-12-20 22:19:22,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 22:19:22,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 22:19:22,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:19:22,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 22:19:22,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-12-20 22:19:22,220 INFO L87 Difference]: Start difference. First operand 129 states and 178 transitions. Second operand has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 5 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2023-12-20 22:19:26,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:19:26,214 INFO L93 Difference]: Finished difference Result 288 states and 378 transitions. [2023-12-20 22:19:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-20 22:19:26,214 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 5 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) Word has length 170 [2023-12-20 22:19:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:19:26,216 INFO L225 Difference]: With dead ends: 288 [2023-12-20 22:19:26,216 INFO L226 Difference]: Without dead ends: 245 [2023-12-20 22:19:26,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=825, Invalid=4577, Unknown=0, NotChecked=0, Total=5402 [2023-12-20 22:19:26,217 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 395 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 22:19:26,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 363 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 22:19:26,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-20 22:19:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 144. [2023-12-20 22:19:26,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 90 states have internal predecessors, (103), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-20 22:19:26,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 187 transitions. [2023-12-20 22:19:26,252 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 187 transitions. Word has length 170 [2023-12-20 22:19:26,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:19:26,252 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 187 transitions. [2023-12-20 22:19:26,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 5 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2023-12-20 22:19:26,253 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 187 transitions. [2023-12-20 22:19:26,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 22:19:26,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:19:26,256 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:19:26,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 22:19:26,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 22:19:26,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:19:26,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:19:26,465 INFO L85 PathProgramCache]: Analyzing trace with hash -774169141, now seen corresponding path program 1 times [2023-12-20 22:19:26,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:19:26,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367236526] [2023-12-20 22:19:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:19:26,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:19:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:19:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:19:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:19:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:19:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:19:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:19:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:19:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:19:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:19:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:19:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:19:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:19:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:19:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:19:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-20 22:19:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 22:19:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 22:19:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 22:19:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 22:19:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-20 22:19:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-20 22:19:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 22:19:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 22:19:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 22:19:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 22:19:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-20 22:19:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 22:19:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 22:19:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-20 22:19:28,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:19:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367236526] [2023-12-20 22:19:28,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367236526] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 22:19:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421435304] [2023-12-20 22:19:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:19:28,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:19:28,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:19:28,414 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:19:28,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 22:19:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:19:28,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-20 22:19:28,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-20 22:33:23,358 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 22:33:23,366 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 22:33:23,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 22:33:23,386 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 [2023-12-20 22:33:23,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 22:33:23,569 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 173 with TraceHistMax 28,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-19-2-2-2-2-2-2-2-3-2-3-2-3-2-2-2-2-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-55-4-2-3-4-3-4-3-4-3-3-3-2-4-3-4-3-3-3-3-4-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-1 context. [2023-12-20 22:33:23,574 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:33:23,575 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 22:33:23,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 10:33:23 BoogieIcfgContainer [2023-12-20 22:33:23,577 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 22:33:23,577 INFO L158 Benchmark]: Toolchain (without parser) took 870758.85ms. Allocated memory was 221.2MB in the beginning and 1.2GB in the end (delta: 944.8MB). Free memory was 183.9MB in the beginning and 450.0MB in the end (delta: -266.1MB). Peak memory consumption was 701.4MB. Max. memory is 8.0GB. [2023-12-20 22:33:23,577 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 221.2MB. Free memory is still 178.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 22:33:23,577 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.58ms. Allocated memory is still 221.2MB. Free memory was 183.9MB in the beginning and 170.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 22:33:23,578 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.90ms. Allocated memory is still 221.2MB. Free memory was 170.7MB in the beginning and 167.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-20 22:33:23,578 INFO L158 Benchmark]: Boogie Preprocessor took 36.07ms. Allocated memory is still 221.2MB. Free memory was 167.1MB in the beginning and 161.4MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-20 22:33:23,579 INFO L158 Benchmark]: RCFGBuilder took 405.06ms. Allocated memory is still 221.2MB. Free memory was 161.4MB in the beginning and 141.5MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-20 22:33:23,579 INFO L158 Benchmark]: TraceAbstraction took 870057.85ms. Allocated memory was 221.2MB in the beginning and 1.2GB in the end (delta: 944.8MB). Free memory was 140.9MB in the beginning and 450.0MB in the end (delta: -309.1MB). Peak memory consumption was 658.4MB. Max. memory is 8.0GB. [2023-12-20 22:33:23,580 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 221.2MB. Free memory is still 178.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 202.58ms. Allocated memory is still 221.2MB. Free memory was 183.9MB in the beginning and 170.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.90ms. Allocated memory is still 221.2MB. Free memory was 170.7MB in the beginning and 167.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.07ms. Allocated memory is still 221.2MB. Free memory was 167.1MB in the beginning and 161.4MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 405.06ms. Allocated memory is still 221.2MB. Free memory was 161.4MB in the beginning and 141.5MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 870057.85ms. Allocated memory was 221.2MB in the beginning and 1.2GB in the end (delta: 944.8MB). Free memory was 140.9MB in the beginning and 450.0MB in the end (delta: -309.1MB). Peak memory consumption was 658.4MB. 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 analyzing trace of length 173 with TraceHistMax 28,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-19-2-2-2-2-2-2-2-3-2-3-2-3-2-2-2-2-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-55-4-2-3-4-3-4-3-4-3-3-3-2-4-3-4-3-3-3-3-4-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 870.0s, OverallIterations: 12, TraceHistogramMax: 28, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1035 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1032 mSDsluCounter, 2181 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1599 mSDsCounter, 547 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2561 IncrementalHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 547 mSolverCounterUnsat, 582 mSDtfsCounter, 2561 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 924 GetRequests, 741 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1853 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=11, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 277 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 22.9s InterpolantComputationTime, 1200 NumberOfCodeBlocks, 1200 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1357 ConstructedInterpolants, 0 QuantifiedInterpolants, 9346 SizeOfPredicates, 4 NumberOfNonLiveVariables, 384 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 8122/8257 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