/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/loops-crafted-1/mono-crafted_6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:52:54,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:52:54,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:52:54,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:52:54,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:52:54,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:52:54,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:52:54,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:52:54,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:52:54,488 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:52:54,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:52:54,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:52:54,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:52:54,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:52:54,490 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:52:54,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:52:54,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:52:54,491 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:52:54,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:52:54,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:52:54,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:52:54,491 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:52:54,492 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:52:54,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:52:54,492 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:52:54,492 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:52:54,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:52:54,492 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:52:54,493 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:52:54,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:52:54,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:52:54,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:52:54,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:52:54,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:52:54,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:52:54,494 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:52:54,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:52:54,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:52:54,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:52:54,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:52:54,495 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:52:54,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:52:54,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:52:54,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:52:54,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:52:54,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:52:54,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:52:54,819 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:52:54,832 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:52:54,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_6.c [2023-12-16 04:52:55,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:52:56,070 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:52:56,071 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_6.c [2023-12-16 04:52:56,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/259629458/60e24374db40405a8c8b4772dcec88ee/FLAG5aea677f9 [2023-12-16 04:52:56,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/259629458/60e24374db40405a8c8b4772dcec88ee [2023-12-16 04:52:56,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:52:56,090 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:52:56,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:52:56,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:52:56,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:52:56,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65914839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56, skipping insertion in model container [2023-12-16 04:52:56,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,110 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:52:56,220 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_6.c[318,331] [2023-12-16 04:52:56,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:52:56,235 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:52:56,243 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_6.c[318,331] [2023-12-16 04:52:56,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:52:56,254 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:52:56,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56 WrapperNode [2023-12-16 04:52:56,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:52:56,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:52:56,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:52:56,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:52:56,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,276 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-12-16 04:52:56,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:52:56,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:52:56,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:52:56,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:52:56,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,283 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,289 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]. [2023-12-16 04:52:56,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:52:56,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:52:56,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:52:56,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:52:56,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (1/1) ... [2023-12-16 04:52:56,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:52:56,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:52:56,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:52:56,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:52:56,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:52:56,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:52:56,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:52:56,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:52:56,397 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:52:56,398 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:52:56,459 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:52:56,472 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:52:56,472 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:52:56,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:52:56 BoogieIcfgContainer [2023-12-16 04:52:56,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:52:56,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:52:56,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:52:56,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:52:56,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:52:56" (1/3) ... [2023-12-16 04:52:56,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792363f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:52:56, skipping insertion in model container [2023-12-16 04:52:56,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:56" (2/3) ... [2023-12-16 04:52:56,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792363f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:52:56, skipping insertion in model container [2023-12-16 04:52:56,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:52:56" (3/3) ... [2023-12-16 04:52:56,478 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_6.c [2023-12-16 04:52:56,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:52:56,488 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:52:56,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:52:56,518 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;@3b37f23b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:52:56,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:52:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:56,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-16 04:52:56,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:52:56,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-16 04:52:56,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:52:56,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:52:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash 68636575, now seen corresponding path program 1 times [2023-12-16 04:52:56,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:52:56,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566736135] [2023-12-16 04:52:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:52:56,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:52:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:52:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:52:56,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:52:56,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566736135] [2023-12-16 04:52:56,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566736135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:52:56,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:52:56,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:52:56,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779246766] [2023-12-16 04:52:56,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:52:56,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:52:56,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:52:56,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:52:56,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:52:56,726 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:52:56,763 INFO L93 Difference]: Finished difference Result 23 states and 34 transitions. [2023-12-16 04:52:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:52:56,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-16 04:52:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:52:56,769 INFO L225 Difference]: With dead ends: 23 [2023-12-16 04:52:56,769 INFO L226 Difference]: Without dead ends: 11 [2023-12-16 04:52:56,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:52:56,772 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:52:56,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:52:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-16 04:52:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-16 04:52:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-16 04:52:56,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2023-12-16 04:52:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:52:56,791 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-16 04:52:56,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-16 04:52:56,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-16 04:52:56,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:52:56,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:52:56,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:52:56,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:52:56,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:52:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1578908930, now seen corresponding path program 1 times [2023-12-16 04:52:56,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:52:56,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008679274] [2023-12-16 04:52:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:52:56,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:52:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:52:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:52:56,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:52:56,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008679274] [2023-12-16 04:52:56,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008679274] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:52:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803822350] [2023-12-16 04:52:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:52:56,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:52:56,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:52:56,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:52:56,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:52:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:52:56,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:52:56,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:52:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:52:56,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:52:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:52:56,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803822350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:52:56,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:52:56,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-16 04:52:56,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856846198] [2023-12-16 04:52:56,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:52:56,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:52:56,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:52:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:52:56,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:52:56,935 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:52:56,976 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2023-12-16 04:52:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:52:56,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-16 04:52:56,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:52:56,978 INFO L225 Difference]: With dead ends: 25 [2023-12-16 04:52:56,979 INFO L226 Difference]: Without dead ends: 17 [2023-12-16 04:52:56,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:52:56,980 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:52:56,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:52:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-16 04:52:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2023-12-16 04:52:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-12-16 04:52:56,983 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2023-12-16 04:52:56,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:52:56,983 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-12-16 04:52:56,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-16 04:52:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 04:52:56,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:52:56,984 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:52:56,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:52:57,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:52:57,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:52:57,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:52:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash -266815252, now seen corresponding path program 1 times [2023-12-16 04:52:57,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:52:57,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516464205] [2023-12-16 04:52:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:52:57,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:52:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:52:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:52:57,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:52:57,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516464205] [2023-12-16 04:52:57,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516464205] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:52:57,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154195418] [2023-12-16 04:52:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:52:57,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:52:57,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:52:57,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:52:57,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:52:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:52:57,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:52:57,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:52:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:52:57,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:52:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:52:57,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154195418] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:52:57,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:52:57,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-12-16 04:52:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006166107] [2023-12-16 04:52:57,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:52:57,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:52:57,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:52:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:52:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:52:57,395 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:57,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:52:57,436 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2023-12-16 04:52:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:52:57,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-16 04:52:57,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:52:57,438 INFO L225 Difference]: With dead ends: 38 [2023-12-16 04:52:57,438 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 04:52:57,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:52:57,441 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:52:57,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 13 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:52:57,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 04:52:57,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-16 04:52:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:57,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-12-16 04:52:57,455 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 13 [2023-12-16 04:52:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:52:57,455 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-12-16 04:52:57,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-12-16 04:52:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 04:52:57,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:52:57,456 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2023-12-16 04:52:57,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:52:57,662 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,SelfDestructingSolverStorable2 [2023-12-16 04:52:57,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:52:57,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:52:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1626016234, now seen corresponding path program 1 times [2023-12-16 04:52:57,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:52:57,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235576261] [2023-12-16 04:52:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:52:57,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:52:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:52:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 04:52:57,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:52:57,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235576261] [2023-12-16 04:52:57,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235576261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:52:57,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407949465] [2023-12-16 04:52:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:52:57,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:52:57,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:52:57,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:52:57,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:52:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:52:57,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:52:57,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:52:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 04:52:57,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:52:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 04:52:58,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407949465] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:52:58,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:52:58,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-16 04:52:58,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352266812] [2023-12-16 04:52:58,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:52:58,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 04:52:58,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:52:58,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 04:52:58,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:52:58,053 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:58,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:52:58,090 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2023-12-16 04:52:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 04:52:58,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-16 04:52:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:52:58,091 INFO L225 Difference]: With dead ends: 59 [2023-12-16 04:52:58,091 INFO L226 Difference]: Without dead ends: 38 [2023-12-16 04:52:58,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:52:58,094 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:52:58,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:52:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-16 04:52:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-16 04:52:58,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-12-16 04:52:58,105 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 27 [2023-12-16 04:52:58,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:52:58,105 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-12-16 04:52:58,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:58,105 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-12-16 04:52:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 04:52:58,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:52:58,106 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2023-12-16 04:52:58,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:52:58,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:52:58,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:52:58,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:52:58,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1656537113, now seen corresponding path program 2 times [2023-12-16 04:52:58,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:52:58,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457714919] [2023-12-16 04:52:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:52:58,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:52:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:52:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 63 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 04:52:58,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:52:58,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457714919] [2023-12-16 04:52:58,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457714919] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:52:58,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479981014] [2023-12-16 04:52:58,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:52:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:52:58,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:52:58,526 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:52:58,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:52:58,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:52:58,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:52:58,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 04:52:58,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:52:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 63 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 04:52:58,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:52:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 63 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 04:52:58,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479981014] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:52:58,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:52:58,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-12-16 04:52:58,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588020292] [2023-12-16 04:52:58,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:52:58,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 04:52:58,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:52:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 04:52:58,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:52:58,756 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:58,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:52:58,892 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2023-12-16 04:52:58,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 04:52:58,893 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-16 04:52:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:52:58,895 INFO L225 Difference]: With dead ends: 79 [2023-12-16 04:52:58,895 INFO L226 Difference]: Without dead ends: 58 [2023-12-16 04:52:58,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:52:58,896 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:52:58,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:52:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-16 04:52:58,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-12-16 04:52:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.105263157894737) internal successors, (63), 57 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2023-12-16 04:52:58,901 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 37 [2023-12-16 04:52:58,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:52:58,901 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2023-12-16 04:52:58,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2023-12-16 04:52:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 04:52:58,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:52:58,902 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2023-12-16 04:52:58,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:52:59,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:52:59,106 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:52:59,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:52:59,107 INFO L85 PathProgramCache]: Analyzing trace with hash -28340169, now seen corresponding path program 3 times [2023-12-16 04:52:59,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:52:59,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792446030] [2023-12-16 04:52:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:52:59,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:52:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:52:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 04:52:59,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:52:59,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792446030] [2023-12-16 04:52:59,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792446030] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:52:59,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826823271] [2023-12-16 04:52:59,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:52:59,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:52:59,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:52:59,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:52:59,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:52:59,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 04:52:59,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:52:59,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:52:59,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:52:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-16 04:52:59,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:52:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-16 04:52:59,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826823271] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:52:59,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:52:59,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 4, 4] total 25 [2023-12-16 04:52:59,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297767232] [2023-12-16 04:52:59,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:52:59,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 04:52:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:52:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 04:52:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-16 04:52:59,764 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:59,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:52:59,868 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2023-12-16 04:52:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 04:52:59,869 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-16 04:52:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:52:59,871 INFO L225 Difference]: With dead ends: 93 [2023-12-16 04:52:59,871 INFO L226 Difference]: Without dead ends: 72 [2023-12-16 04:52:59,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-16 04:52:59,872 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:52:59,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:52:59,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-16 04:52:59,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-12-16 04:52:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2023-12-16 04:52:59,884 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 57 [2023-12-16 04:52:59,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:52:59,885 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2023-12-16 04:52:59,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:52:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2023-12-16 04:52:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 04:52:59,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:52:59,887 INFO L195 NwaCegarLoop]: trace histogram [26, 19, 7, 7, 4, 3, 1, 1, 1, 1, 1] [2023-12-16 04:52:59,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:53:00,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:53:00,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:53:00,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:53:00,092 INFO L85 PathProgramCache]: Analyzing trace with hash -786335249, now seen corresponding path program 4 times [2023-12-16 04:53:00,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:53:00,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027392134] [2023-12-16 04:53:00,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:53:00,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:53:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:53:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 260 proven. 380 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 04:53:00,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:53:00,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027392134] [2023-12-16 04:53:00,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027392134] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:53:00,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503279289] [2023-12-16 04:53:00,617 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:53:00,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:53:00,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:53:00,618 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:53:00,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:53:00,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:53:00,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:53:00,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-16 04:53:00,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:53:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 260 proven. 380 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 04:53:00,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:53:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 260 proven. 380 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 04:53:01,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503279289] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:53:01,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:53:01,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 42 [2023-12-16 04:53:01,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223798154] [2023-12-16 04:53:01,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:53:01,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-16 04:53:01,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:53:01,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-16 04:53:01,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 04:53:01,226 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:01,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:53:01,331 INFO L93 Difference]: Finished difference Result 147 states and 190 transitions. [2023-12-16 04:53:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-16 04:53:01,332 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-16 04:53:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:53:01,333 INFO L225 Difference]: With dead ends: 147 [2023-12-16 04:53:01,333 INFO L226 Difference]: Without dead ends: 114 [2023-12-16 04:53:01,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 04:53:01,334 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:53:01,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:53:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-16 04:53:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-16 04:53:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1061946902654867) internal successors, (125), 113 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2023-12-16 04:53:01,341 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 71 [2023-12-16 04:53:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:53:01,341 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2023-12-16 04:53:01,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2023-12-16 04:53:01,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-16 04:53:01,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:53:01,342 INFO L195 NwaCegarLoop]: trace histogram [47, 40, 7, 7, 4, 3, 1, 1, 1, 1, 1] [2023-12-16 04:53:01,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 04:53:01,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:53:01,547 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:53:01,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:53:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2049214002, now seen corresponding path program 5 times [2023-12-16 04:53:01,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:53:01,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188780060] [2023-12-16 04:53:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:53:01,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:53:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:53:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 533 proven. 1640 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 04:53:03,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:53:03,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188780060] [2023-12-16 04:53:03,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188780060] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:53:03,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177503932] [2023-12-16 04:53:03,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:53:03,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:53:03,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:53:03,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:53:03,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:53:03,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2023-12-16 04:53:03,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:53:03,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-16 04:53:03,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:53:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1292 proven. 389 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-12-16 04:53:04,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:53:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1292 proven. 389 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-12-16 04:53:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177503932] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:53:06,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:53:06,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 22, 22] total 83 [2023-12-16 04:53:06,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100792736] [2023-12-16 04:53:06,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:53:06,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-16 04:53:06,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:53:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-16 04:53:06,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2023-12-16 04:53:06,152 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand has 83 states, 83 states have (on average 2.3012048192771086) internal successors, (191), 83 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:53:06,621 INFO L93 Difference]: Finished difference Result 297 states and 394 transitions. [2023-12-16 04:53:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-16 04:53:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.3012048192771086) internal successors, (191), 83 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-16 04:53:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:53:06,623 INFO L225 Difference]: With dead ends: 297 [2023-12-16 04:53:06,623 INFO L226 Difference]: Without dead ends: 264 [2023-12-16 04:53:06,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2023-12-16 04:53:06,625 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 149 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:53:06,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 58 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:53:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-16 04:53:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-12-16 04:53:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.1863117870722433) internal successors, (312), 263 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 312 transitions. [2023-12-16 04:53:06,677 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 312 transitions. Word has length 113 [2023-12-16 04:53:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:53:06,677 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 312 transitions. [2023-12-16 04:53:06,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.3012048192771086) internal successors, (191), 83 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:06,678 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 312 transitions. [2023-12-16 04:53:06,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-16 04:53:06,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:53:06,680 INFO L195 NwaCegarLoop]: trace histogram [85, 44, 44, 41, 40, 4, 1, 1, 1, 1, 1] [2023-12-16 04:53:06,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 04:53:06,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:53:06,885 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:53:06,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:53:06,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1603846910, now seen corresponding path program 6 times [2023-12-16 04:53:06,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:53:06,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138829789] [2023-12-16 04:53:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:53:06,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:53:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:53:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9117 backedges. 3654 proven. 1722 refuted. 0 times theorem prover too weak. 3741 trivial. 0 not checked. [2023-12-16 04:53:08,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:53:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138829789] [2023-12-16 04:53:08,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138829789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:53:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321721435] [2023-12-16 04:53:08,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 04:53:08,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:53:08,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:53:08,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:53:08,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:53:08,548 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-16 04:53:08,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:53:08,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:53:08,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:53:08,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9117 backedges. 1084 proven. 32 refuted. 0 times theorem prover too weak. 8001 trivial. 0 not checked. [2023-12-16 04:53:08,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:53:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9117 backedges. 1084 proven. 32 refuted. 0 times theorem prover too weak. 8001 trivial. 0 not checked. [2023-12-16 04:53:08,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321721435] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:53:08,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:53:08,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 7, 7] total 54 [2023-12-16 04:53:08,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535091770] [2023-12-16 04:53:08,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:53:08,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-16 04:53:08,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:53:08,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-16 04:53:08,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2023-12-16 04:53:08,883 INFO L87 Difference]: Start difference. First operand 264 states and 312 transitions. Second operand has 54 states, 54 states have (on average 2.5555555555555554) internal successors, (138), 54 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:08,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:53:08,998 INFO L93 Difference]: Finished difference Result 471 states and 586 transitions. [2023-12-16 04:53:08,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-16 04:53:08,999 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.5555555555555554) internal successors, (138), 54 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2023-12-16 04:53:08,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:53:09,000 INFO L225 Difference]: With dead ends: 471 [2023-12-16 04:53:09,000 INFO L226 Difference]: Without dead ends: 290 [2023-12-16 04:53:09,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2023-12-16 04:53:09,001 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:53:09,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:53:09,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-16 04:53:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2023-12-16 04:53:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.2110726643598615) internal successors, (350), 289 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2023-12-16 04:53:09,042 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 263 [2023-12-16 04:53:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:53:09,044 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2023-12-16 04:53:09,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.5555555555555554) internal successors, (138), 54 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2023-12-16 04:53:09,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-16 04:53:09,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:53:09,085 INFO L195 NwaCegarLoop]: trace histogram [92, 50, 50, 42, 40, 10, 1, 1, 1, 1, 1] [2023-12-16 04:53:09,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:53:09,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-16 04:53:09,289 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:53:09,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:53:09,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1433056971, now seen corresponding path program 7 times [2023-12-16 04:53:09,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:53:09,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280635344] [2023-12-16 04:53:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:53:09,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:53:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:53:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10914 backedges. 4257 proven. 1806 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-12-16 04:53:11,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:53:11,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280635344] [2023-12-16 04:53:11,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280635344] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:53:11,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070891122] [2023-12-16 04:53:11,569 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 04:53:11,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:53:11,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:53:11,570 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:53:11,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:53:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:53:11,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-16 04:53:11,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:53:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10914 backedges. 4257 proven. 1806 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-12-16 04:53:11,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:53:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10914 backedges. 4257 proven. 1806 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-12-16 04:53:13,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070891122] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:53:13,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:53:13,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 88 [2023-12-16 04:53:13,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522122320] [2023-12-16 04:53:13,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:53:13,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-16 04:53:13,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:53:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-16 04:53:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2023-12-16 04:53:13,822 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand has 89 states, 89 states have (on average 2.0898876404494384) internal successors, (186), 88 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:14,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:53:14,043 INFO L93 Difference]: Finished difference Result 583 states and 747 transitions. [2023-12-16 04:53:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-16 04:53:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0898876404494384) internal successors, (186), 88 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2023-12-16 04:53:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:53:14,045 INFO L225 Difference]: With dead ends: 583 [2023-12-16 04:53:14,045 INFO L226 Difference]: Without dead ends: 378 [2023-12-16 04:53:14,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2023-12-16 04:53:14,047 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:53:14,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:53:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-16 04:53:14,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2023-12-16 04:53:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.1618037135278514) internal successors, (438), 377 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 438 transitions. [2023-12-16 04:53:14,056 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 438 transitions. Word has length 289 [2023-12-16 04:53:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:53:14,056 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 438 transitions. [2023-12-16 04:53:14,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.0898876404494384) internal successors, (186), 88 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:14,056 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 438 transitions. [2023-12-16 04:53:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-16 04:53:14,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:53:14,059 INFO L195 NwaCegarLoop]: trace histogram [136, 86, 50, 50, 40, 10, 1, 1, 1, 1, 1] [2023-12-16 04:53:14,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:53:14,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 04:53:14,264 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:53:14,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:53:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2030106703, now seen corresponding path program 8 times [2023-12-16 04:53:14,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:53:14,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924635545] [2023-12-16 04:53:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:53:14,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:53:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:53:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20946 backedges. 8613 proven. 7482 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-12-16 04:53:20,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:53:20,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924635545] [2023-12-16 04:53:20,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924635545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:53:20,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755500612] [2023-12-16 04:53:20,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:53:20,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:53:20,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:53:20,472 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:53:20,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:53:20,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:53:20,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:53:20,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 174 conjunts are in the unsatisfiable core [2023-12-16 04:53:20,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:53:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 20946 backedges. 8613 proven. 7482 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-12-16 04:53:20,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:53:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20946 backedges. 8613 proven. 7482 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-12-16 04:53:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755500612] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:53:29,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:53:29,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88, 88] total 176 [2023-12-16 04:53:29,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128467556] [2023-12-16 04:53:29,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:53:29,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2023-12-16 04:53:29,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:53:29,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2023-12-16 04:53:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2023-12-16 04:53:29,910 INFO L87 Difference]: Start difference. First operand 378 states and 438 transitions. Second operand has 177 states, 177 states have (on average 2.0451977401129944) internal successors, (362), 176 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:30,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:53:30,682 INFO L93 Difference]: Finished difference Result 759 states and 967 transitions. [2023-12-16 04:53:30,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2023-12-16 04:53:30,682 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 2.0451977401129944) internal successors, (362), 176 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2023-12-16 04:53:30,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:53:30,695 INFO L225 Difference]: With dead ends: 759 [2023-12-16 04:53:30,695 INFO L226 Difference]: Without dead ends: 554 [2023-12-16 04:53:30,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2023-12-16 04:53:30,700 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:53:30,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:53:30,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-16 04:53:30,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2023-12-16 04:53:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.1103074141048825) internal successors, (614), 553 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 614 transitions. [2023-12-16 04:53:30,712 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 614 transitions. Word has length 377 [2023-12-16 04:53:30,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:53:30,712 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 614 transitions. [2023-12-16 04:53:30,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 2.0451977401129944) internal successors, (362), 176 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:53:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 614 transitions. [2023-12-16 04:53:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-12-16 04:53:30,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:53:30,719 INFO L195 NwaCegarLoop]: trace histogram [224, 174, 50, 50, 40, 10, 1, 1, 1, 1, 1] [2023-12-16 04:53:30,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:53:30,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 04:53:30,922 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:53:30,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:53:30,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1994049705, now seen corresponding path program 9 times [2023-12-16 04:53:30,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:53:30,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784904895] [2023-12-16 04:53:30,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:53:30,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:53:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:53:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 52626 backedges. 17325 proven. 30450 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-12-16 04:53:56,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:53:56,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784904895] [2023-12-16 04:53:56,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784904895] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:53:56,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920923070] [2023-12-16 04:53:56,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:53:56,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:53:56,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:53:56,740 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:53:56,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:53:56,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-12-16 04:53:56,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:53:56,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 04:53:56,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:53:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 52626 backedges. 5323 proven. 200 refuted. 0 times theorem prover too weak. 47103 trivial. 0 not checked. [2023-12-16 04:53:58,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:53:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 52626 backedges. 5323 proven. 200 refuted. 0 times theorem prover too weak. 47103 trivial. 0 not checked. [2023-12-16 04:53:59,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920923070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:53:59,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:53:59,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 13, 13] total 199 [2023-12-16 04:53:59,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716595328] [2023-12-16 04:53:59,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:53:59,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 199 states [2023-12-16 04:53:59,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:53:59,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2023-12-16 04:53:59,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2023-12-16 04:53:59,650 INFO L87 Difference]: Start difference. First operand 554 states and 614 transitions. Second operand has 199 states, 199 states have (on average 2.271356783919598) internal successors, (452), 199 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:54:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:54:00,791 INFO L93 Difference]: Finished difference Result 809 states and 966 transitions. [2023-12-16 04:54:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2023-12-16 04:54:00,792 INFO L78 Accepts]: Start accepts. Automaton has has 199 states, 199 states have (on average 2.271356783919598) internal successors, (452), 199 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 553 [2023-12-16 04:54:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:54:00,794 INFO L225 Difference]: With dead ends: 809 [2023-12-16 04:54:00,794 INFO L226 Difference]: Without dead ends: 604 [2023-12-16 04:54:00,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1280 GetRequests, 1083 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2023-12-16 04:54:00,796 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:54:00,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 47 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:54:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-12-16 04:54:00,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2023-12-16 04:54:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 603 states have (on average 1.1409618573797677) internal successors, (688), 603 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:54:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 688 transitions. [2023-12-16 04:54:00,809 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 688 transitions. Word has length 553 [2023-12-16 04:54:00,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:54:00,809 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 688 transitions. [2023-12-16 04:54:00,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 199 states, 199 states have (on average 2.271356783919598) internal successors, (452), 199 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:54:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 688 transitions. [2023-12-16 04:54:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2023-12-16 04:54:00,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:54:00,815 INFO L195 NwaCegarLoop]: trace histogram [237, 175, 62, 62, 40, 22, 1, 1, 1, 1, 1] [2023-12-16 04:54:00,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:54:01,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 04:54:01,021 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:54:01,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:54:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash 739426702, now seen corresponding path program 10 times [2023-12-16 04:54:01,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:54:01,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728235245] [2023-12-16 04:54:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:54:01,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:54:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-16 04:54:13,773 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 [2023-12-16 04:54:14,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 04:54:15,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 04:54:15,915 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:304) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-16 04:54:15,946 INFO L158 Benchmark]: Toolchain (without parser) took 79855.65ms. Allocated memory was 219.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 169.6MB in the beginning and 862.8MB in the end (delta: -693.2MB). Peak memory consumption was 893.1MB. Max. memory is 8.0GB. [2023-12-16 04:54:15,946 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 132.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:54:15,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.54ms. Allocated memory is still 219.2MB. Free memory was 169.4MB in the beginning and 159.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:54:15,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.21ms. Allocated memory is still 219.2MB. Free memory was 159.1MB in the beginning and 157.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 04:54:15,947 INFO L158 Benchmark]: Boogie Preprocessor took 27.86ms. Allocated memory is still 219.2MB. Free memory was 157.6MB in the beginning and 156.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:54:15,947 INFO L158 Benchmark]: RCFGBuilder took 168.07ms. Allocated memory is still 219.2MB. Free memory was 156.0MB in the beginning and 146.3MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 04:54:15,947 INFO L158 Benchmark]: TraceAbstraction took 79471.19ms. Allocated memory was 219.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 145.5MB in the beginning and 862.8MB in the end (delta: -717.3MB). Peak memory consumption was 869.0MB. Max. memory is 8.0GB. [2023-12-16 04:54:15,949 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 132.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 162.54ms. Allocated memory is still 219.2MB. Free memory was 169.4MB in the beginning and 159.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.21ms. Allocated memory is still 219.2MB. Free memory was 159.1MB in the beginning and 157.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.86ms. Allocated memory is still 219.2MB. Free memory was 157.6MB in the beginning and 156.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 168.07ms. Allocated memory is still 219.2MB. Free memory was 156.0MB in the beginning and 146.3MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 79471.19ms. Allocated memory was 219.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 145.5MB in the beginning and 862.8MB in the end (delta: -717.3MB). Peak memory consumption was 869.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:304) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown