/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/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 10:14:08,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 10:14:08,918 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 10:14:08,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 10:14:08,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 10:14:08,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 10:14:08,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 10:14:08,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 10:14:08,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 10:14:08,947 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 10:14:08,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 10:14:08,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 10:14:08,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 10:14:08,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 10:14:08,949 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 10:14:08,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 10:14:08,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 10:14:08,949 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 10:14:08,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 10:14:08,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 10:14:08,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 10:14:08,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 10:14:08,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 10:14:08,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 10:14:08,950 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 10:14:08,950 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 10:14:08,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 10:14:08,951 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 10:14:08,951 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 10:14:08,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 10:14:08,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 10:14:08,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 10:14:08,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:14:08,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 10:14:08,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 10:14:08,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 10:14:08,953 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 10:14:08,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 10:14:08,953 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 10:14:08,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 10:14:08,953 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 10:14:08,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 10:14:08,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 10:14:08,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 10:14:09,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 10:14:09,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 10:14:09,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 10:14:09,186 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 10:14:09,186 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 10:14:09,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2023-12-21 10:14:10,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 10:14:10,421 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 10:14:10,422 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/MultCommutative-2.c [2023-12-21 10:14:10,427 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4701109f/9f6b1ce4a3b64737850aa9f6b5781869/FLAG1ffa9573f [2023-12-21 10:14:10,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4701109f/9f6b1ce4a3b64737850aa9f6b5781869 [2023-12-21 10:14:10,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 10:14:10,442 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 10:14:10,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 10:14:10,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 10:14:10,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 10:14:10,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dec2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10, skipping insertion in model container [2023-12-21 10:14:10,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 10:14:10,593 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/MultCommutative-2.c[970,983] [2023-12-21 10:14:10,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:14:10,605 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 10:14:10,616 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/MultCommutative-2.c[970,983] [2023-12-21 10:14:10,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:14:10,626 INFO L206 MainTranslator]: Completed translation [2023-12-21 10:14:10,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10 WrapperNode [2023-12-21 10:14:10,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 10:14:10,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 10:14:10,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 10:14:10,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 10:14:10,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,646 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-12-21 10:14:10,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 10:14:10,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 10:14:10,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 10:14:10,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 10:14:10,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,661 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]. [2023-12-21 10:14:10,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 10:14:10,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 10:14:10,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 10:14:10,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 10:14:10,668 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (1/1) ... [2023-12-21 10:14:10,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:14:10,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:10,696 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) [2023-12-21 10:14:10,716 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 [2023-12-21 10:14:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 10:14:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-12-21 10:14:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-12-21 10:14:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 10:14:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 10:14:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 10:14:10,764 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 10:14:10,766 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 10:14:10,862 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 10:14:10,877 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 10:14:10,878 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 10:14:10,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:14:10 BoogieIcfgContainer [2023-12-21 10:14:10,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 10:14:10,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 10:14:10,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 10:14:10,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 10:14:10,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:14:10" (1/3) ... [2023-12-21 10:14:10,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7332a2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:14:10, skipping insertion in model container [2023-12-21 10:14:10,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:14:10" (2/3) ... [2023-12-21 10:14:10,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7332a2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:14:10, skipping insertion in model container [2023-12-21 10:14:10,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:14:10" (3/3) ... [2023-12-21 10:14:10,884 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2023-12-21 10:14:10,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 10:14:10,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 10:14:10,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 10:14:10,948 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;@5508d3bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 10:14:10,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 10:14:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 10:14:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 10:14:10,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:10,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:10,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:10,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash 647179642, now seen corresponding path program 1 times [2023-12-21 10:14:10,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:10,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412057854] [2023-12-21 10:14:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:10,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 10:14:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 10:14:11,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:11,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412057854] [2023-12-21 10:14:11,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412057854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:14:11,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:14:11,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:14:11,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129319123] [2023-12-21 10:14:11,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:14:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:14:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:14:11,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:14:11,315 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:14:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:11,419 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2023-12-21 10:14:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:14:11,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-12-21 10:14:11,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:11,427 INFO L225 Difference]: With dead ends: 37 [2023-12-21 10:14:11,427 INFO L226 Difference]: Without dead ends: 27 [2023-12-21 10:14:11,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:14:11,432 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:11,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:14:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-21 10:14:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2023-12-21 10:14:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-21 10:14:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2023-12-21 10:14:11,463 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 19 [2023-12-21 10:14:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:11,463 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2023-12-21 10:14:11,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:14:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2023-12-21 10:14:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 10:14:11,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:11,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 10:14:11,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:11,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:11,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1580415186, now seen corresponding path program 1 times [2023-12-21 10:14:11,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:11,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566590422] [2023-12-21 10:14:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:11,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 10:14:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 10:14:11,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:11,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566590422] [2023-12-21 10:14:11,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566590422] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:11,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868885380] [2023-12-21 10:14:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:11,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:11,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:11,684 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) [2023-12-21 10:14:11,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 10:14:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 10:14:11,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 10:14:11,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 10:14:11,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868885380] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:11,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:11,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-12-21 10:14:11,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726273690] [2023-12-21 10:14:11,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:11,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 10:14:11,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:11,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 10:14:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:14:11,903 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-21 10:14:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:12,069 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2023-12-21 10:14:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:14:12,069 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 25 [2023-12-21 10:14:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:12,070 INFO L225 Difference]: With dead ends: 51 [2023-12-21 10:14:12,070 INFO L226 Difference]: Without dead ends: 26 [2023-12-21 10:14:12,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-12-21 10:14:12,072 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:12,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:14:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-21 10:14:12,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-12-21 10:14:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 10:14:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-12-21 10:14:12,078 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 25 [2023-12-21 10:14:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:12,078 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-12-21 10:14:12,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-21 10:14:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-12-21 10:14:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 10:14:12,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:12,079 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:12,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 10:14:12,284 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 [2023-12-21 10:14:12,285 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:12,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:12,286 INFO L85 PathProgramCache]: Analyzing trace with hash -590605896, now seen corresponding path program 1 times [2023-12-21 10:14:12,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:12,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272262323] [2023-12-21 10:14:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:12,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:12,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 10:14:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 10:14:12,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:12,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272262323] [2023-12-21 10:14:12,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272262323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:14:12,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:14:12,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 10:14:12,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025285079] [2023-12-21 10:14:12,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:14:12,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:14:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:12,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:14:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 10:14:12,438 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 10:14:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:12,478 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2023-12-21 10:14:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:14:12,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-12-21 10:14:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:12,480 INFO L225 Difference]: With dead ends: 30 [2023-12-21 10:14:12,480 INFO L226 Difference]: Without dead ends: 26 [2023-12-21 10:14:12,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:14:12,481 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:12,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 38 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:14:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-21 10:14:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-21 10:14:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 10:14:12,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-12-21 10:14:12,486 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 26 [2023-12-21 10:14:12,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:12,486 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-12-21 10:14:12,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 10:14:12,486 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-12-21 10:14:12,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 10:14:12,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:12,487 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:12,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 10:14:12,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:12,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:12,488 INFO L85 PathProgramCache]: Analyzing trace with hash 132154764, now seen corresponding path program 2 times [2023-12-21 10:14:12,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:12,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162071484] [2023-12-21 10:14:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:12,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:12,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:12,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 10:14:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:12,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 10:14:12,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:12,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162071484] [2023-12-21 10:14:12,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162071484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:12,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026762560] [2023-12-21 10:14:12,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:14:12,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:12,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:12,975 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) [2023-12-21 10:14:13,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 10:14:13,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:14:13,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:13,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 10:14:13,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 10:14:13,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 10:14:14,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026762560] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:14,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:14,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2023-12-21 10:14:14,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490088180] [2023-12-21 10:14:14,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:14,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 10:14:14,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:14,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 10:14:14,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 10:14:14,011 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 40 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 28 states have internal predecessors, (56), 8 states have call successors, (8), 1 states have call predecessors, (8), 10 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-21 10:14:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:14,352 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2023-12-21 10:14:14,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 10:14:14,352 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 28 states have internal predecessors, (56), 8 states have call successors, (8), 1 states have call predecessors, (8), 10 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) Word has length 33 [2023-12-21 10:14:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:14,353 INFO L225 Difference]: With dead ends: 39 [2023-12-21 10:14:14,353 INFO L226 Difference]: Without dead ends: 35 [2023-12-21 10:14:14,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=1992, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 10:14:14,355 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:14,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 133 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 10:14:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-21 10:14:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2023-12-21 10:14:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 10:14:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2023-12-21 10:14:14,360 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 33 [2023-12-21 10:14:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:14,360 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2023-12-21 10:14:14,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 28 states have internal predecessors, (56), 8 states have call successors, (8), 1 states have call predecessors, (8), 10 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-21 10:14:14,361 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2023-12-21 10:14:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 10:14:14,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:14,362 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:14,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:14,566 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,SelfDestructingSolverStorable3 [2023-12-21 10:14:14,567 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:14,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:14,567 INFO L85 PathProgramCache]: Analyzing trace with hash 735115528, now seen corresponding path program 3 times [2023-12-21 10:14:14,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:14,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411687518] [2023-12-21 10:14:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:14,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 10:14:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 10:14:14,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:14,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411687518] [2023-12-21 10:14:14,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411687518] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:14,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232380339] [2023-12-21 10:14:14,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:14:14,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:14,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:14,953 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) [2023-12-21 10:14:14,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 10:14:14,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 10:14:14,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:14,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-21 10:14:14,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 10:14:15,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 10:14:16,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232380339] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:16,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:16,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 20] total 47 [2023-12-21 10:14:16,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257104339] [2023-12-21 10:14:16,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:16,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 10:14:16,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:16,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 10:14:16,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1990, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 10:14:16,118 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 47 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 32 states have internal predecessors, (65), 9 states have call successors, (9), 1 states have call predecessors, (9), 13 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) [2023-12-21 10:14:17,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:17,048 INFO L93 Difference]: Finished difference Result 67 states and 89 transitions. [2023-12-21 10:14:17,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 10:14:17,048 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 32 states have internal predecessors, (65), 9 states have call successors, (9), 1 states have call predecessors, (9), 13 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) Word has length 40 [2023-12-21 10:14:17,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:17,049 INFO L225 Difference]: With dead ends: 67 [2023-12-21 10:14:17,049 INFO L226 Difference]: Without dead ends: 61 [2023-12-21 10:14:17,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=485, Invalid=3937, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 10:14:17,051 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 85 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:17,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 272 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 10:14:17,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-21 10:14:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2023-12-21 10:14:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 2 states have call predecessors, (7), 8 states have return successors, (29), 11 states have call predecessors, (29), 7 states have call successors, (29) [2023-12-21 10:14:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2023-12-21 10:14:17,059 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 70 transitions. Word has length 40 [2023-12-21 10:14:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:17,059 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 70 transitions. [2023-12-21 10:14:17,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 32 states have internal predecessors, (65), 9 states have call successors, (9), 1 states have call predecessors, (9), 13 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) [2023-12-21 10:14:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 70 transitions. [2023-12-21 10:14:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 10:14:17,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:17,060 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:17,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:17,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:17,265 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:17,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:17,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2110838554, now seen corresponding path program 4 times [2023-12-21 10:14:17,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:17,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757808944] [2023-12-21 10:14:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:17,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:14:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 10:14:17,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:17,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757808944] [2023-12-21 10:14:17,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757808944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:17,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287783390] [2023-12-21 10:14:17,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:14:17,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:17,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:17,550 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) [2023-12-21 10:14:17,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 10:14:17,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:14:17,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:17,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-21 10:14:17,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 10:14:17,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 10:14:18,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287783390] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:18,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:18,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 20] total 46 [2023-12-21 10:14:18,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616944286] [2023-12-21 10:14:18,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:18,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 10:14:18,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:18,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 10:14:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 10:14:18,579 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand has 46 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 31 states have internal predecessors, (64), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) [2023-12-21 10:14:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:19,452 INFO L93 Difference]: Finished difference Result 80 states and 124 transitions. [2023-12-21 10:14:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 10:14:19,452 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 31 states have internal predecessors, (64), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) Word has length 40 [2023-12-21 10:14:19,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:19,454 INFO L225 Difference]: With dead ends: 80 [2023-12-21 10:14:19,454 INFO L226 Difference]: Without dead ends: 70 [2023-12-21 10:14:19,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=494, Invalid=3928, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 10:14:19,456 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 88 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:19,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 285 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 10:14:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-21 10:14:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 55. [2023-12-21 10:14:19,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 38 states have internal predecessors, (41), 9 states have call successors, (9), 3 states have call predecessors, (9), 9 states have return successors, (44), 13 states have call predecessors, (44), 9 states have call successors, (44) [2023-12-21 10:14:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 94 transitions. [2023-12-21 10:14:19,465 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 94 transitions. Word has length 40 [2023-12-21 10:14:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:19,466 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 94 transitions. [2023-12-21 10:14:19,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 31 states have internal predecessors, (64), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) [2023-12-21 10:14:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 94 transitions. [2023-12-21 10:14:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 10:14:19,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:19,467 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:19,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:19,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:19,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:19,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash -577127850, now seen corresponding path program 1 times [2023-12-21 10:14:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:19,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525616791] [2023-12-21 10:14:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:19,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 10:14:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:19,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:19,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 36 proven. 11 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-21 10:14:19,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:19,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525616791] [2023-12-21 10:14:19,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525616791] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:19,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379253976] [2023-12-21 10:14:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:19,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:19,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:19,750 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) [2023-12-21 10:14:19,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 10:14:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:19,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 10:14:19,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-21 10:14:19,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-21 10:14:19,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379253976] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:19,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:19,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2023-12-21 10:14:19,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014576688] [2023-12-21 10:14:19,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:19,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 10:14:19,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:19,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 10:14:19,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-21 10:14:19,950 INFO L87 Difference]: Start difference. First operand 55 states and 94 transitions. Second operand has 12 states, 10 states have (on average 3.4) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-21 10:14:20,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:20,029 INFO L93 Difference]: Finished difference Result 78 states and 127 transitions. [2023-12-21 10:14:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:14:20,029 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.4) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 60 [2023-12-21 10:14:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:20,030 INFO L225 Difference]: With dead ends: 78 [2023-12-21 10:14:20,030 INFO L226 Difference]: Without dead ends: 43 [2023-12-21 10:14:20,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-21 10:14:20,031 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:20,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 81 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:14:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-21 10:14:20,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-21 10:14:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) [2023-12-21 10:14:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2023-12-21 10:14:20,036 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 60 [2023-12-21 10:14:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:20,036 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2023-12-21 10:14:20,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.4) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-21 10:14:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2023-12-21 10:14:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 10:14:20,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:20,037 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:20,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:20,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:20,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:20,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:20,242 INFO L85 PathProgramCache]: Analyzing trace with hash 396340908, now seen corresponding path program 5 times [2023-12-21 10:14:20,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:20,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949238682] [2023-12-21 10:14:20,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:20,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-21 10:14:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 82 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-21 10:14:20,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:20,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949238682] [2023-12-21 10:14:20,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949238682] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:20,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009733532] [2023-12-21 10:14:20,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:14:20,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:20,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:20,830 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) [2023-12-21 10:14:20,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 10:14:20,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-21 10:14:20,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:20,886 WARN L260 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 10:14:20,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 3 proven. 81 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-21 10:14:21,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 112 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 10:14:22,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009733532] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:22,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:22,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 21] total 42 [2023-12-21 10:14:22,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105000452] [2023-12-21 10:14:22,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:22,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 10:14:22,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:22,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 10:14:22,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 10:14:22,255 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 42 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 27 states have internal predecessors, (55), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-21 10:14:22,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:22,841 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2023-12-21 10:14:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 10:14:22,841 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 27 states have internal predecessors, (55), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) Word has length 61 [2023-12-21 10:14:22,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:22,842 INFO L225 Difference]: With dead ends: 62 [2023-12-21 10:14:22,842 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 10:14:22,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=366, Invalid=3174, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 10:14:22,844 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 40 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:22,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 256 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 10:14:22,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 10:14:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2023-12-21 10:14:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (19), 10 states have call predecessors, (19), 7 states have call successors, (19) [2023-12-21 10:14:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-12-21 10:14:22,849 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 61 [2023-12-21 10:14:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:22,849 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-12-21 10:14:22,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 27 states have internal predecessors, (55), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-21 10:14:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-12-21 10:14:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 10:14:22,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:22,850 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:22,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 10:14:23,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:23,055 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:23,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:23,055 INFO L85 PathProgramCache]: Analyzing trace with hash 834620298, now seen corresponding path program 6 times [2023-12-21 10:14:23,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:23,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587289093] [2023-12-21 10:14:23,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:23,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:23,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:23,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:14:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:23,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:23,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 20 proven. 91 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-21 10:14:23,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587289093] [2023-12-21 10:14:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587289093] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342369293] [2023-12-21 10:14:23,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:14:23,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:23,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:23,698 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) [2023-12-21 10:14:23,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 10:14:23,755 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-21 10:14:23,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:23,756 WARN L260 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 10:14:23,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 83 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-21 10:14:24,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 23 proven. 115 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 10:14:25,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342369293] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:25,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:25,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 27] total 56 [2023-12-21 10:14:25,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007328953] [2023-12-21 10:14:25,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:25,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-21 10:14:25,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:25,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-21 10:14:25,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2876, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 10:14:25,470 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 56 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 35 states have internal predecessors, (74), 12 states have call successors, (12), 1 states have call predecessors, (12), 15 states have return successors, (22), 21 states have call predecessors, (22), 12 states have call successors, (22) [2023-12-21 10:14:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:26,466 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2023-12-21 10:14:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 10:14:26,466 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 35 states have internal predecessors, (74), 12 states have call successors, (12), 1 states have call predecessors, (12), 15 states have return successors, (22), 21 states have call predecessors, (22), 12 states have call successors, (22) Word has length 61 [2023-12-21 10:14:26,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:26,467 INFO L225 Difference]: With dead ends: 65 [2023-12-21 10:14:26,467 INFO L226 Difference]: Without dead ends: 58 [2023-12-21 10:14:26,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=540, Invalid=5312, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 10:14:26,469 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:26,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 388 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:14:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-21 10:14:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2023-12-21 10:14:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (22), 11 states have call predecessors, (22), 7 states have call successors, (22) [2023-12-21 10:14:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2023-12-21 10:14:26,474 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 61 [2023-12-21 10:14:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:26,474 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2023-12-21 10:14:26,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 35 states have internal predecessors, (74), 12 states have call successors, (12), 1 states have call predecessors, (12), 15 states have return successors, (22), 21 states have call predecessors, (22), 12 states have call successors, (22) [2023-12-21 10:14:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2023-12-21 10:14:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 10:14:26,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:26,475 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:26,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:26,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:26,689 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:26,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1250404822, now seen corresponding path program 7 times [2023-12-21 10:14:26,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:26,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125313977] [2023-12-21 10:14:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:26,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:27,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 10:14:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:27,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 93 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-21 10:14:27,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:27,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125313977] [2023-12-21 10:14:27,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125313977] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:27,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234435607] [2023-12-21 10:14:27,356 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:14:27,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:27,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:27,363 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) [2023-12-21 10:14:27,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 10:14:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:27,440 WARN L260 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 10:14:27,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-21 10:14:27,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 118 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 10:14:28,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234435607] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:28,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:28,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 21] total 51 [2023-12-21 10:14:28,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251134309] [2023-12-21 10:14:28,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:28,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-21 10:14:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-21 10:14:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2369, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 10:14:28,870 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 51 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 32 states have internal predecessors, (65), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (20), 19 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-21 10:14:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:29,785 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2023-12-21 10:14:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 10:14:29,786 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 32 states have internal predecessors, (65), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (20), 19 states have call predecessors, (20), 10 states have call successors, (20) Word has length 61 [2023-12-21 10:14:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:29,787 INFO L225 Difference]: With dead ends: 70 [2023-12-21 10:14:29,787 INFO L226 Difference]: Without dead ends: 60 [2023-12-21 10:14:29,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=556, Invalid=4846, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 10:14:29,789 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 72 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:29,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 281 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:14:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-21 10:14:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2023-12-21 10:14:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (21), 11 states have call predecessors, (21), 7 states have call successors, (21) [2023-12-21 10:14:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2023-12-21 10:14:29,798 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 61 [2023-12-21 10:14:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:29,798 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2023-12-21 10:14:29,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 32 states have internal predecessors, (65), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (20), 19 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-21 10:14:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2023-12-21 10:14:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 10:14:29,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:29,799 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:29,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:29,999 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,SelfDestructingSolverStorable9 [2023-12-21 10:14:30,000 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:30,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:30,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1515345786, now seen corresponding path program 8 times [2023-12-21 10:14:30,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:30,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895546837] [2023-12-21 10:14:30,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:30,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:14:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-21 10:14:30,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:30,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895546837] [2023-12-21 10:14:30,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895546837] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:30,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408126058] [2023-12-21 10:14:30,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:14:30,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:30,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:30,804 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) [2023-12-21 10:14:30,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 10:14:30,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:14:30,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:30,889 WARN L260 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 109 conjunts are in the unsatisfiable core [2023-12-21 10:14:30,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 5 proven. 108 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-21 10:14:31,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 26 proven. 156 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-21 10:14:32,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408126058] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:32,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:32,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 30] total 62 [2023-12-21 10:14:32,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293701356] [2023-12-21 10:14:32,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:32,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-21 10:14:32,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:32,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-21 10:14:32,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=3556, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 10:14:32,951 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand has 62 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2023-12-21 10:14:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:33,906 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2023-12-21 10:14:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 10:14:33,907 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) Word has length 68 [2023-12-21 10:14:33,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:33,908 INFO L225 Difference]: With dead ends: 70 [2023-12-21 10:14:33,908 INFO L226 Difference]: Without dead ends: 63 [2023-12-21 10:14:33,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=616, Invalid=6356, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 10:14:33,910 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:33,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 355 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:14:33,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-21 10:14:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2023-12-21 10:14:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 36 states have internal predecessors, (38), 7 states have call successors, (7), 3 states have call predecessors, (7), 9 states have return successors, (24), 12 states have call predecessors, (24), 7 states have call successors, (24) [2023-12-21 10:14:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2023-12-21 10:14:33,922 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 68 [2023-12-21 10:14:33,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:33,922 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2023-12-21 10:14:33,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2023-12-21 10:14:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2023-12-21 10:14:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 10:14:33,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:33,923 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:33,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 10:14:34,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:34,131 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:34,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash -335813798, now seen corresponding path program 9 times [2023-12-21 10:14:34,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:34,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329950563] [2023-12-21 10:14:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:34,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:14:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 28 proven. 146 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-12-21 10:14:35,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:35,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329950563] [2023-12-21 10:14:35,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329950563] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:35,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195364507] [2023-12-21 10:14:35,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:14:35,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:35,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:35,025 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) [2023-12-21 10:14:35,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 10:14:35,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-21 10:14:35,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:35,162 WARN L260 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 120 conjunts are in the unsatisfiable core [2023-12-21 10:14:35,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 18 proven. 142 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-21 10:14:35,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 30 proven. 206 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 10:14:37,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195364507] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:37,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:37,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 37] total 73 [2023-12-21 10:14:37,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729151702] [2023-12-21 10:14:37,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:37,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-21 10:14:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:37,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-21 10:14:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=4971, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 10:14:37,866 INFO L87 Difference]: Start difference. First operand 52 states and 69 transitions. Second operand has 73 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 46 states have internal predecessors, (97), 14 states have call successors, (14), 1 states have call predecessors, (14), 20 states have return successors, (29), 27 states have call predecessors, (29), 14 states have call successors, (29) [2023-12-21 10:14:39,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:39,039 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2023-12-21 10:14:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 10:14:39,040 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 46 states have internal predecessors, (97), 14 states have call successors, (14), 1 states have call predecessors, (14), 20 states have return successors, (29), 27 states have call predecessors, (29), 14 states have call successors, (29) Word has length 75 [2023-12-21 10:14:39,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:39,042 INFO L225 Difference]: With dead ends: 73 [2023-12-21 10:14:39,042 INFO L226 Difference]: Without dead ends: 66 [2023-12-21 10:14:39,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=810, Invalid=8502, Unknown=0, NotChecked=0, Total=9312 [2023-12-21 10:14:39,046 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 140 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:39,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 479 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:14:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-21 10:14:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2023-12-21 10:14:39,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 38 states have internal predecessors, (40), 7 states have call successors, (7), 3 states have call predecessors, (7), 10 states have return successors, (27), 13 states have call predecessors, (27), 7 states have call successors, (27) [2023-12-21 10:14:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2023-12-21 10:14:39,062 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 75 [2023-12-21 10:14:39,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:39,063 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions. [2023-12-21 10:14:39,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 46 states have internal predecessors, (97), 14 states have call successors, (14), 1 states have call predecessors, (14), 20 states have return successors, (29), 27 states have call predecessors, (29), 14 states have call successors, (29) [2023-12-21 10:14:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2023-12-21 10:14:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-21 10:14:39,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:39,065 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:39,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:39,272 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,SelfDestructingSolverStorable11 [2023-12-21 10:14:39,272 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:39,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1392852054, now seen corresponding path program 10 times [2023-12-21 10:14:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:39,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506780929] [2023-12-21 10:14:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:39,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:39,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:39,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:14:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:39,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:39,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:40,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:40,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:40,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:40,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-21 10:14:40,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:40,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506780929] [2023-12-21 10:14:40,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506780929] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:40,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174819323] [2023-12-21 10:14:40,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:14:40,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:40,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:40,382 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) [2023-12-21 10:14:40,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 10:14:40,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:14:40,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:40,449 WARN L260 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 133 conjunts are in the unsatisfiable core [2023-12-21 10:14:40,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 7 proven. 167 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-12-21 10:14:41,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-21 10:14:43,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174819323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:43,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:43,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 36] total 74 [2023-12-21 10:14:43,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599398631] [2023-12-21 10:14:43,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:43,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-21 10:14:43,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:43,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-21 10:14:43,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=5132, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 10:14:43,341 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 74 states, 70 states have (on average 1.4) internal successors, (98), 44 states have internal predecessors, (98), 15 states have call successors, (15), 1 states have call predecessors, (15), 21 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) [2023-12-21 10:14:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:44,830 INFO L93 Difference]: Finished difference Result 76 states and 105 transitions. [2023-12-21 10:14:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 10:14:44,830 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 70 states have (on average 1.4) internal successors, (98), 44 states have internal predecessors, (98), 15 states have call successors, (15), 1 states have call predecessors, (15), 21 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) Word has length 82 [2023-12-21 10:14:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:44,831 INFO L225 Difference]: With dead ends: 76 [2023-12-21 10:14:44,831 INFO L226 Difference]: Without dead ends: 69 [2023-12-21 10:14:44,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=788, Invalid=9112, Unknown=0, NotChecked=0, Total=9900 [2023-12-21 10:14:44,833 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 111 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:44,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 581 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2025 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:14:44,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-21 10:14:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2023-12-21 10:14:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 40 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 11 states have return successors, (30), 14 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-21 10:14:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2023-12-21 10:14:44,838 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 82 [2023-12-21 10:14:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:44,839 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2023-12-21 10:14:44,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 70 states have (on average 1.4) internal successors, (98), 44 states have internal predecessors, (98), 15 states have call successors, (15), 1 states have call predecessors, (15), 21 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) [2023-12-21 10:14:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2023-12-21 10:14:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 10:14:44,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:44,840 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:44,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-21 10:14:45,047 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,SelfDestructingSolverStorable12 [2023-12-21 10:14:45,047 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:45,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:45,047 INFO L85 PathProgramCache]: Analyzing trace with hash -34520552, now seen corresponding path program 11 times [2023-12-21 10:14:45,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:45,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740278269] [2023-12-21 10:14:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:45,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:45,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:45,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:45,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:45,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:45,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 10:14:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:45,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 48 proven. 336 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-21 10:14:46,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:46,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740278269] [2023-12-21 10:14:46,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740278269] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:46,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335400041] [2023-12-21 10:14:46,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:14:46,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:46,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:46,738 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:46,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 10:14:46,824 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-21 10:14:46,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:46,827 WARN L260 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 181 conjunts are in the unsatisfiable core [2023-12-21 10:14:46,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 8 proven. 316 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-12-21 10:14:47,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 53 proven. 520 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-21 10:14:50,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335400041] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:50,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:50,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 26, 48] total 95 [2023-12-21 10:14:50,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999714676] [2023-12-21 10:14:50,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:50,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-12-21 10:14:50,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:50,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-12-21 10:14:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=8566, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 10:14:50,818 INFO L87 Difference]: Start difference. First operand 58 states and 79 transitions. Second operand has 95 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 56 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 29 states have return successors, (40), 39 states have call predecessors, (40), 19 states have call successors, (40) [2023-12-21 10:14:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:53,051 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2023-12-21 10:14:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 10:14:53,052 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 56 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 29 states have return successors, (40), 39 states have call predecessors, (40), 19 states have call successors, (40) Word has length 110 [2023-12-21 10:14:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:53,053 INFO L225 Difference]: With dead ends: 86 [2023-12-21 10:14:53,053 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 10:14:53,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3376 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1280, Invalid=15490, Unknown=0, NotChecked=0, Total=16770 [2023-12-21 10:14:53,055 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 208 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 3328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:53,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 776 Invalid, 3328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3236 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 10:14:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 10:14:53,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2023-12-21 10:14:53,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 42 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 12 states have return successors, (33), 15 states have call predecessors, (33), 7 states have call successors, (33) [2023-12-21 10:14:53,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 84 transitions. [2023-12-21 10:14:53,063 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 84 transitions. Word has length 110 [2023-12-21 10:14:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:53,064 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 84 transitions. [2023-12-21 10:14:53,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 56 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 29 states have return successors, (40), 39 states have call predecessors, (40), 19 states have call successors, (40) [2023-12-21 10:14:53,064 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 84 transitions. [2023-12-21 10:14:53,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 10:14:53,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:53,065 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:53,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:53,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-21 10:14:53,275 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:53,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:53,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2050033702, now seen corresponding path program 12 times [2023-12-21 10:14:53,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:53,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571883535] [2023-12-21 10:14:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:53,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:14:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 40 proven. 251 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-21 10:14:54,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571883535] [2023-12-21 10:14:54,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571883535] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126270263] [2023-12-21 10:14:54,618 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:14:54,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:54,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:54,633 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:54,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 10:14:54,729 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-12-21 10:14:54,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:54,731 WARN L260 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 157 conjunts are in the unsatisfiable core [2023-12-21 10:14:54,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 19 proven. 229 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-21 10:14:55,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 39 proven. 380 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-21 10:14:58,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126270263] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:58,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:58,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28, 42] total 86 [2023-12-21 10:14:58,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803589071] [2023-12-21 10:14:58,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:58,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-21 10:14:58,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:58,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-21 10:14:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=6996, Unknown=0, NotChecked=0, Total=7310 [2023-12-21 10:14:58,141 INFO L87 Difference]: Start difference. First operand 61 states and 84 transitions. Second operand has 86 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 50 states have internal predecessors, (117), 17 states have call successors, (17), 1 states have call predecessors, (17), 25 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) [2023-12-21 10:14:59,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:59,855 INFO L93 Difference]: Finished difference Result 82 states and 115 transitions. [2023-12-21 10:14:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 10:14:59,856 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 50 states have internal predecessors, (117), 17 states have call successors, (17), 1 states have call predecessors, (17), 25 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) Word has length 96 [2023-12-21 10:14:59,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:59,856 INFO L225 Difference]: With dead ends: 82 [2023-12-21 10:14:59,857 INFO L226 Difference]: Without dead ends: 75 [2023-12-21 10:14:59,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2773 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=976, Invalid=12364, Unknown=0, NotChecked=0, Total=13340 [2023-12-21 10:14:59,860 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 59 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:59,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 707 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 10:14:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-21 10:14:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2023-12-21 10:14:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.069767441860465) internal successors, (46), 44 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 13 states have return successors, (36), 16 states have call predecessors, (36), 7 states have call successors, (36) [2023-12-21 10:14:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2023-12-21 10:14:59,867 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 96 [2023-12-21 10:14:59,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:59,867 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2023-12-21 10:14:59,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 50 states have internal predecessors, (117), 17 states have call successors, (17), 1 states have call predecessors, (17), 25 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) [2023-12-21 10:14:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2023-12-21 10:14:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 10:14:59,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:59,868 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:59,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 10:15:00,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 10:15:00,073 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:00,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2116040742, now seen corresponding path program 13 times [2023-12-21 10:15:00,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:00,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961644967] [2023-12-21 10:15:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:00,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 10:15:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 60 proven. 486 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-12-21 10:15:02,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:02,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961644967] [2023-12-21 10:15:02,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961644967] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:02,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749113154] [2023-12-21 10:15:02,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:15:02,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:02,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:02,150 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:02,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 10:15:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:02,286 WARN L260 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 217 conjunts are in the unsatisfiable core [2023-12-21 10:15:02,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 10 proven. 460 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2023-12-21 10:15:03,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:15:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 65 proven. 783 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-21 10:15:07,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749113154] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:15:07,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:15:07,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 30, 57] total 112 [2023-12-21 10:15:07,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019666301] [2023-12-21 10:15:07,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:15:07,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2023-12-21 10:15:07,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:15:07,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2023-12-21 10:15:07,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=12000, Unknown=0, NotChecked=0, Total=12432 [2023-12-21 10:15:07,235 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 112 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 65 states have internal predecessors, (150), 22 states have call successors, (22), 1 states have call predecessors, (22), 35 states have return successors, (48), 47 states have call predecessors, (48), 22 states have call successors, (48) [2023-12-21 10:15:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:15:10,187 INFO L93 Difference]: Finished difference Result 94 states and 138 transitions. [2023-12-21 10:15:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 10:15:10,188 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 65 states have internal predecessors, (150), 22 states have call successors, (22), 1 states have call predecessors, (22), 35 states have return successors, (48), 47 states have call predecessors, (48), 22 states have call successors, (48) Word has length 131 [2023-12-21 10:15:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:15:10,188 INFO L225 Difference]: With dead ends: 94 [2023-12-21 10:15:10,188 INFO L226 Difference]: Without dead ends: 78 [2023-12-21 10:15:10,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4674 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1640, Invalid=21616, Unknown=0, NotChecked=0, Total=23256 [2023-12-21 10:15:10,191 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 80 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 5189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:15:10,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1216 Invalid, 5189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 10:15:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-21 10:15:10,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2023-12-21 10:15:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 46 states have internal predecessors, (48), 7 states have call successors, (7), 3 states have call predecessors, (7), 14 states have return successors, (39), 17 states have call predecessors, (39), 7 states have call successors, (39) [2023-12-21 10:15:10,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 94 transitions. [2023-12-21 10:15:10,204 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 94 transitions. Word has length 131 [2023-12-21 10:15:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:15:10,204 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 94 transitions. [2023-12-21 10:15:10,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 65 states have internal predecessors, (150), 22 states have call successors, (22), 1 states have call predecessors, (22), 35 states have return successors, (48), 47 states have call predecessors, (48), 22 states have call successors, (48) [2023-12-21 10:15:10,204 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 94 transitions. [2023-12-21 10:15:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 10:15:10,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:15:10,207 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:15:10,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 10:15:10,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:10,413 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:10,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:10,413 INFO L85 PathProgramCache]: Analyzing trace with hash 209449994, now seen corresponding path program 14 times [2023-12-21 10:15:10,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:10,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561302398] [2023-12-21 10:15:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:10,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:10,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:10,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:10,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:15:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:10,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:11,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:11,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:11,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:11,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:11,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 48 proven. 336 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-21 10:15:12,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561302398] [2023-12-21 10:15:12,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561302398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657873268] [2023-12-21 10:15:12,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:15:12,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:12,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:12,199 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:12,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 10:15:12,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:15:12,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:12,326 WARN L260 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 181 conjunts are in the unsatisfiable core [2023-12-21 10:15:12,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 11 proven. 321 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-21 10:15:13,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:15:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 44 proven. 528 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-21 10:15:16,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657873268] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:15:16,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:15:16,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 48] total 98 [2023-12-21 10:15:16,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514431443] [2023-12-21 10:15:16,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:15:16,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-21 10:15:16,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:15:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-21 10:15:16,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=9148, Unknown=0, NotChecked=0, Total=9506 [2023-12-21 10:15:16,582 INFO L87 Difference]: Start difference. First operand 67 states and 94 transitions. Second operand has 98 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 56 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 29 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) [2023-12-21 10:15:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:15:18,818 INFO L93 Difference]: Finished difference Result 88 states and 125 transitions. [2023-12-21 10:15:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 10:15:18,819 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 56 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 29 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) Word has length 110 [2023-12-21 10:15:18,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:15:18,820 INFO L225 Difference]: With dead ends: 88 [2023-12-21 10:15:18,820 INFO L226 Difference]: Without dead ends: 81 [2023-12-21 10:15:18,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3624 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1180, Invalid=16112, Unknown=0, NotChecked=0, Total=17292 [2023-12-21 10:15:18,822 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 115 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 3230 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 10:15:18,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 850 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3230 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 10:15:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-21 10:15:18,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2023-12-21 10:15:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 48 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 15 states have return successors, (42), 18 states have call predecessors, (42), 7 states have call successors, (42) [2023-12-21 10:15:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 99 transitions. [2023-12-21 10:15:18,829 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 99 transitions. Word has length 110 [2023-12-21 10:15:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:15:18,830 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 99 transitions. [2023-12-21 10:15:18,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 56 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 29 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) [2023-12-21 10:15:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 99 transitions. [2023-12-21 10:15:18,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 10:15:18,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:15:18,831 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:15:18,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 10:15:19,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 10:15:19,033 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:19,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:19,033 INFO L85 PathProgramCache]: Analyzing trace with hash -679641528, now seen corresponding path program 15 times [2023-12-21 10:15:19,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:19,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754442587] [2023-12-21 10:15:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:19,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:19,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:19,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:19,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 10:15:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:20,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:20,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:20,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:21,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:21,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 72 proven. 663 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2023-12-21 10:15:21,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:21,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754442587] [2023-12-21 10:15:21,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754442587] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:21,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16631001] [2023-12-21 10:15:21,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:15:21,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:21,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:21,942 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:21,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 10:15:22,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2023-12-21 10:15:22,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:22,109 WARN L260 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 253 conjunts are in the unsatisfiable core [2023-12-21 10:15:22,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 12 proven. 632 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2023-12-21 10:15:23,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:15:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 77 proven. 1101 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-21 10:15:30,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16631001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:15:30,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:15:30,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 34, 66] total 129 [2023-12-21 10:15:30,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110428843] [2023-12-21 10:15:30,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:15:30,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-12-21 10:15:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:15:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-12-21 10:15:30,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=16012, Unknown=0, NotChecked=0, Total=16512 [2023-12-21 10:15:30,352 INFO L87 Difference]: Start difference. First operand 70 states and 99 transitions. Second operand has 129 states, 125 states have (on average 1.384) internal successors, (173), 74 states have internal predecessors, (173), 25 states have call successors, (25), 1 states have call predecessors, (25), 41 states have return successors, (56), 55 states have call predecessors, (56), 25 states have call successors, (56) [2023-12-21 10:15:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:15:33,795 INFO L93 Difference]: Finished difference Result 102 states and 152 transitions. [2023-12-21 10:15:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 10:15:33,796 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 125 states have (on average 1.384) internal successors, (173), 74 states have internal predecessors, (173), 25 states have call successors, (25), 1 states have call predecessors, (25), 41 states have return successors, (56), 55 states have call predecessors, (56), 25 states have call successors, (56) Word has length 152 [2023-12-21 10:15:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:15:33,797 INFO L225 Difference]: With dead ends: 102 [2023-12-21 10:15:33,797 INFO L226 Difference]: Without dead ends: 84 [2023-12-21 10:15:33,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6206 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2036, Invalid=28764, Unknown=0, NotChecked=0, Total=30800 [2023-12-21 10:15:33,799 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 296 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 5335 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 5465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 5335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:15:33,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1032 Invalid, 5465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 5335 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 10:15:33,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-21 10:15:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2023-12-21 10:15:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 50 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 16 states have return successors, (45), 19 states have call predecessors, (45), 7 states have call successors, (45) [2023-12-21 10:15:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 104 transitions. [2023-12-21 10:15:33,807 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 104 transitions. Word has length 152 [2023-12-21 10:15:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:15:33,807 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 104 transitions. [2023-12-21 10:15:33,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 125 states have (on average 1.384) internal successors, (173), 74 states have internal predecessors, (173), 25 states have call successors, (25), 1 states have call predecessors, (25), 41 states have return successors, (56), 55 states have call predecessors, (56), 25 states have call successors, (56) [2023-12-21 10:15:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 104 transitions. [2023-12-21 10:15:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-21 10:15:33,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:15:33,815 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:15:33,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 10:15:34,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 10:15:34,022 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:34,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1657187606, now seen corresponding path program 16 times [2023-12-21 10:15:34,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:34,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560140975] [2023-12-21 10:15:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:34,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:34,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:34,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:34,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:15:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 80 proven. 796 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2023-12-21 10:15:37,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560140975] [2023-12-21 10:15:37,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560140975] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72487181] [2023-12-21 10:15:37,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:15:37,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:37,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:37,509 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:37,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 10:15:37,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:15:37,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:37,706 WARN L260 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 277 conjunts are in the unsatisfiable core [2023-12-21 10:15:37,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 13 proven. 761 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2023-12-21 10:15:39,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:15:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 86 proven. 1342 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-12-21 10:15:47,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72487181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:15:47,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:15:47,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 36, 72] total 140 [2023-12-21 10:15:47,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332005681] [2023-12-21 10:15:47,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:15:47,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2023-12-21 10:15:47,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:15:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2023-12-21 10:15:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=18914, Unknown=0, NotChecked=0, Total=19460 [2023-12-21 10:15:47,108 INFO L87 Difference]: Start difference. First operand 73 states and 104 transitions. Second operand has 140 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 80 states have internal predecessors, (188), 27 states have call successors, (27), 1 states have call predecessors, (27), 45 states have return successors, (61), 60 states have call predecessors, (61), 27 states have call successors, (61) [2023-12-21 10:15:51,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:15:51,843 INFO L93 Difference]: Finished difference Result 106 states and 159 transitions. [2023-12-21 10:15:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-21 10:15:51,843 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 80 states have internal predecessors, (188), 27 states have call successors, (27), 1 states have call predecessors, (27), 45 states have return successors, (61), 60 states have call predecessors, (61), 27 states have call successors, (61) Word has length 166 [2023-12-21 10:15:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:15:51,844 INFO L225 Difference]: With dead ends: 106 [2023-12-21 10:15:51,844 INFO L226 Difference]: Without dead ends: 87 [2023-12-21 10:15:51,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7222 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2285, Invalid=33625, Unknown=0, NotChecked=0, Total=35910 [2023-12-21 10:15:51,847 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 93 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 7287 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 7319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 7287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:15:51,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1538 Invalid, 7319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 7287 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 10:15:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-21 10:15:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2023-12-21 10:15:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 52 states have internal predecessors, (54), 7 states have call successors, (7), 3 states have call predecessors, (7), 17 states have return successors, (48), 20 states have call predecessors, (48), 7 states have call successors, (48) [2023-12-21 10:15:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 109 transitions. [2023-12-21 10:15:51,854 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 109 transitions. Word has length 166 [2023-12-21 10:15:51,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:15:51,854 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 109 transitions. [2023-12-21 10:15:51,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 80 states have internal predecessors, (188), 27 states have call successors, (27), 1 states have call predecessors, (27), 45 states have return successors, (61), 60 states have call predecessors, (61), 27 states have call successors, (61) [2023-12-21 10:15:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 109 transitions. [2023-12-21 10:15:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-21 10:15:51,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:15:51,855 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:15:51,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-21 10:15:52,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:52,064 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:52,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:52,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1505342248, now seen corresponding path program 17 times [2023-12-21 10:15:52,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:52,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764069876] [2023-12-21 10:15:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:52,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:52,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:52,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:52,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:53,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:53,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:53,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:53,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 10:15:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:54,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:54,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:54,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:56,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:56,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2006 backedges. 88 proven. 941 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2023-12-21 10:15:56,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:56,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764069876] [2023-12-21 10:15:56,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764069876] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:56,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166755454] [2023-12-21 10:15:56,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:15:56,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:56,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:56,190 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:56,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 10:15:56,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2023-12-21 10:15:56,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:56,423 WARN L260 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 301 conjunts are in the unsatisfiable core [2023-12-21 10:15:56,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2006 backedges. 14 proven. 902 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2023-12-21 10:15:58,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:16:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2006 backedges. 95 proven. 1607 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-21 10:16:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166755454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:16:07,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:16:07,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 38, 78] total 151 [2023-12-21 10:16:07,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528383256] [2023-12-21 10:16:07,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:16:07,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2023-12-21 10:16:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:16:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2023-12-21 10:16:07,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=22058, Unknown=0, NotChecked=0, Total=22650 [2023-12-21 10:16:07,204 INFO L87 Difference]: Start difference. First operand 76 states and 109 transitions. Second operand has 151 states, 147 states have (on average 1.380952380952381) internal successors, (203), 86 states have internal predecessors, (203), 29 states have call successors, (29), 1 states have call predecessors, (29), 49 states have return successors, (66), 65 states have call predecessors, (66), 29 states have call successors, (66) [2023-12-21 10:16:11,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:16:11,745 INFO L93 Difference]: Finished difference Result 110 states and 166 transitions. [2023-12-21 10:16:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-21 10:16:11,746 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 147 states have (on average 1.380952380952381) internal successors, (203), 86 states have internal predecessors, (203), 29 states have call successors, (29), 1 states have call predecessors, (29), 49 states have return successors, (66), 65 states have call predecessors, (66), 29 states have call successors, (66) Word has length 180 [2023-12-21 10:16:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:16:11,747 INFO L225 Difference]: With dead ends: 110 [2023-12-21 10:16:11,747 INFO L226 Difference]: Without dead ends: 90 [2023-12-21 10:16:11,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8314 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2546, Invalid=38866, Unknown=0, NotChecked=0, Total=41412 [2023-12-21 10:16:11,750 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 66 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 7848 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 7860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 7848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:16:11,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1772 Invalid, 7860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 7848 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 10:16:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-21 10:16:11,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2023-12-21 10:16:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 54 states have internal predecessors, (56), 7 states have call successors, (7), 3 states have call predecessors, (7), 18 states have return successors, (51), 21 states have call predecessors, (51), 7 states have call successors, (51) [2023-12-21 10:16:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2023-12-21 10:16:11,757 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 180 [2023-12-21 10:16:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:16:11,757 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2023-12-21 10:16:11,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 147 states have (on average 1.380952380952381) internal successors, (203), 86 states have internal predecessors, (203), 29 states have call successors, (29), 1 states have call predecessors, (29), 49 states have return successors, (66), 65 states have call predecessors, (66), 29 states have call successors, (66) [2023-12-21 10:16:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2023-12-21 10:16:11,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-21 10:16:11,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:16:11,758 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 25, 25, 25, 25, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:16:11,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 10:16:11,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:16:11,964 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:16:11,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:16:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash -550407510, now seen corresponding path program 18 times [2023-12-21 10:16:11,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:16:11,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895023242] [2023-12-21 10:16:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:16:11,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:16:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:12,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:12,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:13,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 10:16:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:14,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:15,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:15,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:16,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:16,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 96 proven. 1098 refuted. 0 times theorem prover too weak. 1161 trivial. 0 not checked. [2023-12-21 10:16:16,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:16:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895023242] [2023-12-21 10:16:16,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895023242] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:16:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018354691] [2023-12-21 10:16:16,781 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:16:16,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:16:16,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:16:16,783 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:16:16,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 10:16:17,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2023-12-21 10:16:17,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:16:17,076 WARN L260 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 325 conjunts are in the unsatisfiable core [2023-12-21 10:16:17,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:16:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 15 proven. 1055 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2023-12-21 10:16:19,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:16:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 104 proven. 1896 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-12-21 10:16:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018354691] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:16:29,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:16:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 40, 84] total 162 [2023-12-21 10:16:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910917769] [2023-12-21 10:16:29,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:16:29,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2023-12-21 10:16:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:16:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2023-12-21 10:16:29,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=25444, Unknown=0, NotChecked=0, Total=26082 [2023-12-21 10:16:29,255 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand has 162 states, 158 states have (on average 1.379746835443038) internal successors, (218), 92 states have internal predecessors, (218), 31 states have call successors, (31), 1 states have call predecessors, (31), 53 states have return successors, (71), 70 states have call predecessors, (71), 31 states have call successors, (71) [2023-12-21 10:16:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:16:34,582 INFO L93 Difference]: Finished difference Result 114 states and 173 transitions. [2023-12-21 10:16:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-21 10:16:34,582 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 158 states have (on average 1.379746835443038) internal successors, (218), 92 states have internal predecessors, (218), 31 states have call successors, (31), 1 states have call predecessors, (31), 53 states have return successors, (71), 70 states have call predecessors, (71), 31 states have call successors, (71) Word has length 194 [2023-12-21 10:16:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:16:34,583 INFO L225 Difference]: With dead ends: 114 [2023-12-21 10:16:34,583 INFO L226 Difference]: Without dead ends: 93 [2023-12-21 10:16:34,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9483 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=2819, Invalid=44487, Unknown=0, NotChecked=0, Total=47306 [2023-12-21 10:16:34,590 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 219 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 8326 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 8417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 8326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:16:34,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1858 Invalid, 8417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 8326 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-21 10:16:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-21 10:16:34,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82. [2023-12-21 10:16:34,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 56 states have internal predecessors, (58), 7 states have call successors, (7), 3 states have call predecessors, (7), 19 states have return successors, (54), 22 states have call predecessors, (54), 7 states have call successors, (54) [2023-12-21 10:16:34,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 119 transitions. [2023-12-21 10:16:34,600 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 119 transitions. Word has length 194 [2023-12-21 10:16:34,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:16:34,600 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 119 transitions. [2023-12-21 10:16:34,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 158 states have (on average 1.379746835443038) internal successors, (218), 92 states have internal predecessors, (218), 31 states have call successors, (31), 1 states have call predecessors, (31), 53 states have return successors, (71), 70 states have call predecessors, (71), 31 states have call successors, (71) [2023-12-21 10:16:34,600 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 119 transitions. [2023-12-21 10:16:34,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 10:16:34,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:16:34,602 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:16:34,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 10:16:34,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:16:34,810 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:16:34,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:16:34,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1492671894, now seen corresponding path program 19 times [2023-12-21 10:16:34,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:16:34,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743988414] [2023-12-21 10:16:34,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:16:34,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:16:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:35,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:35,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:16:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:35,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:36,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:36,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:37,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:37,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:37,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:38,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:38,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:38,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 68 proven. 601 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-12-21 10:16:38,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:16:38,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743988414] [2023-12-21 10:16:38,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743988414] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:16:38,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896618379] [2023-12-21 10:16:38,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:16:38,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:16:38,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:16:38,305 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:16:38,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 10:16:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:38,527 WARN L260 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 241 conjunts are in the unsatisfiable core [2023-12-21 10:16:38,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:16:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 16 proven. 581 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2023-12-21 10:16:40,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:16:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 59 proven. 1003 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-12-21 10:16:46,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896618379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:16:46,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:16:46,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 42, 63] total 128 [2023-12-21 10:16:46,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15720491] [2023-12-21 10:16:46,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:16:46,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2023-12-21 10:16:46,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:16:46,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2023-12-21 10:16:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=15788, Unknown=0, NotChecked=0, Total=16256 [2023-12-21 10:16:46,502 INFO L87 Difference]: Start difference. First operand 82 states and 119 transitions. Second operand has 128 states, 124 states have (on average 1.3709677419354838) internal successors, (170), 71 states have internal predecessors, (170), 24 states have call successors, (24), 1 states have call predecessors, (24), 39 states have return successors, (58), 57 states have call predecessors, (58), 24 states have call successors, (58) [2023-12-21 10:16:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:16:50,344 INFO L93 Difference]: Finished difference Result 103 states and 150 transitions. [2023-12-21 10:16:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 10:16:50,345 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 124 states have (on average 1.3709677419354838) internal successors, (170), 71 states have internal predecessors, (170), 24 states have call successors, (24), 1 states have call predecessors, (24), 39 states have return successors, (58), 57 states have call predecessors, (58), 24 states have call successors, (58) Word has length 145 [2023-12-21 10:16:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:16:50,346 INFO L225 Difference]: With dead ends: 103 [2023-12-21 10:16:50,346 INFO L226 Difference]: Without dead ends: 96 [2023-12-21 10:16:50,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6223 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1760, Invalid=27652, Unknown=0, NotChecked=0, Total=29412 [2023-12-21 10:16:50,349 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 106 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 6327 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 6351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 6327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:16:50,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1911 Invalid, 6351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 6327 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 10:16:50,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-21 10:16:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2023-12-21 10:16:50,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 58 states have internal predecessors, (60), 7 states have call successors, (7), 3 states have call predecessors, (7), 20 states have return successors, (57), 23 states have call predecessors, (57), 7 states have call successors, (57) [2023-12-21 10:16:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 124 transitions. [2023-12-21 10:16:50,364 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 124 transitions. Word has length 145 [2023-12-21 10:16:50,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:16:50,364 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 124 transitions. [2023-12-21 10:16:50,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 124 states have (on average 1.3709677419354838) internal successors, (170), 71 states have internal predecessors, (170), 24 states have call successors, (24), 1 states have call predecessors, (24), 39 states have return successors, (58), 57 states have call predecessors, (58), 24 states have call successors, (58) [2023-12-21 10:16:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 124 transitions. [2023-12-21 10:16:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 10:16:50,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:16:50,369 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:16:50,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 10:16:50,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-21 10:16:50,574 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:16:50,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:16:50,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1062836378, now seen corresponding path program 20 times [2023-12-21 10:16:50,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:16:50,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608030388] [2023-12-21 10:16:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:16:50,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:16:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:50,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:51,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:16:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:51,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:51,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:52,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:53,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:53,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:53,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:54,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:54,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:54,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:54,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 72 proven. 663 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2023-12-21 10:16:54,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:16:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608030388] [2023-12-21 10:16:54,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608030388] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:16:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538226247] [2023-12-21 10:16:54,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:16:54,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:16:54,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:16:54,626 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:16:54,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 10:16:54,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:16:54,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:16:54,918 WARN L260 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 253 conjunts are in the unsatisfiable core [2023-12-21 10:16:54,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:16:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 17 proven. 642 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2023-12-21 10:16:57,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:17:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 62 proven. 1116 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-21 10:17:03,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538226247] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:17:03,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:17:03,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 44, 66] total 134 [2023-12-21 10:17:03,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039823483] [2023-12-21 10:17:03,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:17:03,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2023-12-21 10:17:03,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:17:03,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2023-12-21 10:17:03,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=17332, Unknown=0, NotChecked=0, Total=17822 [2023-12-21 10:17:03,527 INFO L87 Difference]: Start difference. First operand 85 states and 124 transitions. Second operand has 134 states, 130 states have (on average 1.3692307692307693) internal successors, (178), 74 states have internal predecessors, (178), 25 states have call successors, (25), 1 states have call predecessors, (25), 41 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) [2023-12-21 10:17:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:17:06,822 INFO L93 Difference]: Finished difference Result 106 states and 155 transitions. [2023-12-21 10:17:06,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 10:17:06,822 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 130 states have (on average 1.3692307692307693) internal successors, (178), 74 states have internal predecessors, (178), 25 states have call successors, (25), 1 states have call predecessors, (25), 41 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) Word has length 152 [2023-12-21 10:17:06,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:17:06,823 INFO L225 Difference]: With dead ends: 106 [2023-12-21 10:17:06,823 INFO L226 Difference]: Without dead ends: 99 [2023-12-21 10:17:06,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6828 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1888, Invalid=30332, Unknown=0, NotChecked=0, Total=32220 [2023-12-21 10:17:06,825 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 87 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 6282 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 6310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:17:06,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1779 Invalid, 6310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 6282 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 10:17:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-21 10:17:06,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2023-12-21 10:17:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 60 states have internal predecessors, (62), 7 states have call successors, (7), 3 states have call predecessors, (7), 21 states have return successors, (60), 24 states have call predecessors, (60), 7 states have call successors, (60) [2023-12-21 10:17:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 129 transitions. [2023-12-21 10:17:06,845 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 129 transitions. Word has length 152 [2023-12-21 10:17:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:17:06,846 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 129 transitions. [2023-12-21 10:17:06,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 130 states have (on average 1.3692307692307693) internal successors, (178), 74 states have internal predecessors, (178), 25 states have call successors, (25), 1 states have call predecessors, (25), 41 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) [2023-12-21 10:17:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 129 transitions. [2023-12-21 10:17:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-21 10:17:06,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:17:06,860 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 29, 29, 29, 29, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:17:06,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 10:17:07,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-21 10:17:07,066 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:17:07,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:17:07,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1417997144, now seen corresponding path program 21 times [2023-12-21 10:17:07,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:17:07,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809151004] [2023-12-21 10:17:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:17:07,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:17:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:07,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:08,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:08,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:08,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:08,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:08,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:09,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 10:17:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:10,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:10,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:13,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:13,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:13,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 112 proven. 1448 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2023-12-21 10:17:13,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:17:13,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809151004] [2023-12-21 10:17:13,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809151004] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:17:13,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910681920] [2023-12-21 10:17:13,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:17:13,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:17:13,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:17:13,742 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:17:13,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 10:17:14,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 37 check-sat command(s) [2023-12-21 10:17:14,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:17:14,167 WARN L260 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 373 conjunts are in the unsatisfiable core [2023-12-21 10:17:14,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:17:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 18 proven. 1399 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2023-12-21 10:17:16,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:17:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 119 proven. 2549 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-12-21 10:17:27,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910681920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:17:27,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:17:27,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 46, 96] total 185 [2023-12-21 10:17:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271109772] [2023-12-21 10:17:27,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:17:27,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2023-12-21 10:17:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:17:27,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2023-12-21 10:17:27,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=33312, Unknown=0, NotChecked=0, Total=34040 [2023-12-21 10:17:27,401 INFO L87 Difference]: Start difference. First operand 88 states and 129 transitions. Second operand has 185 states, 181 states have (on average 1.3756906077348066) internal successors, (249), 104 states have internal predecessors, (249), 35 states have call successors, (35), 1 states have call predecessors, (35), 61 states have return successors, (82), 81 states have call predecessors, (82), 35 states have call successors, (82) [2023-12-21 10:17:32,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:17:32,785 INFO L93 Difference]: Finished difference Result 126 states and 194 transitions. [2023-12-21 10:17:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-21 10:17:32,786 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 181 states have (on average 1.3756906077348066) internal successors, (249), 104 states have internal predecessors, (249), 35 states have call successors, (35), 1 states have call predecessors, (35), 61 states have return successors, (82), 81 states have call predecessors, (82), 35 states have call successors, (82) Word has length 222 [2023-12-21 10:17:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:17:32,787 INFO L225 Difference]: With dead ends: 126 [2023-12-21 10:17:32,787 INFO L226 Difference]: Without dead ends: 102 [2023-12-21 10:17:32,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12538 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=3530, Invalid=58720, Unknown=0, NotChecked=0, Total=62250 [2023-12-21 10:17:32,792 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 194 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 9339 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 9408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 9339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:17:32,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1849 Invalid, 9408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 9339 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 10:17:32,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-21 10:17:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 91. [2023-12-21 10:17:32,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 62 states have internal predecessors, (64), 7 states have call successors, (7), 3 states have call predecessors, (7), 22 states have return successors, (63), 25 states have call predecessors, (63), 7 states have call successors, (63) [2023-12-21 10:17:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 134 transitions. [2023-12-21 10:17:32,802 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 134 transitions. Word has length 222 [2023-12-21 10:17:32,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:17:32,802 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 134 transitions. [2023-12-21 10:17:32,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 181 states have (on average 1.3756906077348066) internal successors, (249), 104 states have internal predecessors, (249), 35 states have call successors, (35), 1 states have call predecessors, (35), 61 states have return successors, (82), 81 states have call predecessors, (82), 35 states have call successors, (82) [2023-12-21 10:17:32,802 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 134 transitions. [2023-12-21 10:17:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-21 10:17:32,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:17:32,803 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 31, 31, 31, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:17:32,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-21 10:17:33,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:17:33,009 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:17:33,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:17:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1851639142, now seen corresponding path program 22 times [2023-12-21 10:17:33,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:17:33,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333516983] [2023-12-21 10:17:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:17:33,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:17:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:34,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:34,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:35,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 10:17:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:36,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:38,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:39,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:39,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:39,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 120 proven. 1641 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2023-12-21 10:17:40,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:17:40,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333516983] [2023-12-21 10:17:40,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333516983] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:17:40,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283117585] [2023-12-21 10:17:40,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:17:40,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:17:40,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:17:40,797 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:17:40,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 10:17:41,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:17:41,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:17:41,207 WARN L260 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 397 conjunts are in the unsatisfiable core [2023-12-21 10:17:41,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:17:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 19 proven. 1588 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2023-12-21 10:17:44,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:17:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 128 proven. 2910 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-12-21 10:17:56,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283117585] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:17:56,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:17:56,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 48, 102] total 196 [2023-12-21 10:17:56,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005294129] [2023-12-21 10:17:56,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:17:56,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2023-12-21 10:17:56,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:17:56,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2023-12-21 10:17:56,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=774, Invalid=37446, Unknown=0, NotChecked=0, Total=38220 [2023-12-21 10:17:56,731 INFO L87 Difference]: Start difference. First operand 91 states and 134 transitions. Second operand has 196 states, 192 states have (on average 1.375) internal successors, (264), 110 states have internal predecessors, (264), 37 states have call successors, (37), 1 states have call predecessors, (37), 65 states have return successors, (87), 86 states have call predecessors, (87), 37 states have call successors, (87) [2023-12-21 10:18:03,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:18:03,610 INFO L93 Difference]: Finished difference Result 130 states and 201 transitions. [2023-12-21 10:18:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 10:18:03,610 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 192 states have (on average 1.375) internal successors, (264), 110 states have internal predecessors, (264), 37 states have call successors, (37), 1 states have call predecessors, (37), 65 states have return successors, (87), 86 states have call predecessors, (87), 37 states have call successors, (87) Word has length 236 [2023-12-21 10:18:03,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:18:03,611 INFO L225 Difference]: With dead ends: 130 [2023-12-21 10:18:03,611 INFO L226 Difference]: Without dead ends: 105 [2023-12-21 10:18:03,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13966 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=3845, Invalid=65587, Unknown=0, NotChecked=0, Total=69432 [2023-12-21 10:18:03,616 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 220 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 10955 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 11050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 10955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:18:03,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2154 Invalid, 11050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 10955 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-21 10:18:03,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-21 10:18:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2023-12-21 10:18:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 7 states have call successors, (7), 3 states have call predecessors, (7), 23 states have return successors, (66), 26 states have call predecessors, (66), 7 states have call successors, (66) [2023-12-21 10:18:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 139 transitions. [2023-12-21 10:18:03,625 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 139 transitions. Word has length 236 [2023-12-21 10:18:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:18:03,626 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 139 transitions. [2023-12-21 10:18:03,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 192 states have (on average 1.375) internal successors, (264), 110 states have internal predecessors, (264), 37 states have call successors, (37), 1 states have call predecessors, (37), 65 states have return successors, (87), 86 states have call predecessors, (87), 37 states have call successors, (87) [2023-12-21 10:18:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 139 transitions. [2023-12-21 10:18:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-21 10:18:03,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:18:03,627 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 33, 33, 33, 33, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:18:03,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-21 10:18:03,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:18:03,835 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:18:03,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:18:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash 56183864, now seen corresponding path program 23 times [2023-12-21 10:18:03,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:18:03,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379519296] [2023-12-21 10:18:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:18:03,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:18:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:05,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:05,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:05,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:05,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:06,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:06,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:06,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 10:18:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:09,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:10,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:11,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4031 backedges. 128 proven. 1846 refuted. 0 times theorem prover too weak. 2057 trivial. 0 not checked. [2023-12-21 10:18:12,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:18:12,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379519296] [2023-12-21 10:18:12,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379519296] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:18:12,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47620678] [2023-12-21 10:18:12,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:18:12,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:18:12,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:18:12,860 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:18:12,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 10:18:13,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2023-12-21 10:18:13,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:18:13,351 WARN L260 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 421 conjunts are in the unsatisfiable core [2023-12-21 10:18:13,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:18:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4031 backedges. 20 proven. 1789 refuted. 0 times theorem prover too weak. 2222 trivial. 0 not checked. [2023-12-21 10:18:16,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:18:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4031 backedges. 137 proven. 3295 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2023-12-21 10:18:31,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47620678] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:18:31,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:18:31,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 50, 108] total 207 [2023-12-21 10:18:31,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408342803] [2023-12-21 10:18:31,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:18:31,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 207 states [2023-12-21 10:18:31,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:18:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2023-12-21 10:18:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=41822, Unknown=0, NotChecked=0, Total=42642 [2023-12-21 10:18:31,761 INFO L87 Difference]: Start difference. First operand 94 states and 139 transitions. Second operand has 207 states, 203 states have (on average 1.374384236453202) internal successors, (279), 116 states have internal predecessors, (279), 39 states have call successors, (39), 1 states have call predecessors, (39), 69 states have return successors, (92), 91 states have call predecessors, (92), 39 states have call successors, (92) [2023-12-21 10:18:39,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:18:39,851 INFO L93 Difference]: Finished difference Result 134 states and 208 transitions. [2023-12-21 10:18:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-21 10:18:39,851 INFO L78 Accepts]: Start accepts. Automaton has has 207 states, 203 states have (on average 1.374384236453202) internal successors, (279), 116 states have internal predecessors, (279), 39 states have call successors, (39), 1 states have call predecessors, (39), 69 states have return successors, (92), 91 states have call predecessors, (92), 39 states have call successors, (92) Word has length 250 [2023-12-21 10:18:39,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:18:39,853 INFO L225 Difference]: With dead ends: 134 [2023-12-21 10:18:39,853 INFO L226 Difference]: Without dead ends: 108 [2023-12-21 10:18:39,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15477 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=4172, Invalid=72834, Unknown=0, NotChecked=0, Total=77006 [2023-12-21 10:18:39,857 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 228 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 14476 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 14574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 14476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:18:39,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 2979 Invalid, 14574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 14476 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-21 10:18:39,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-21 10:18:39,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 97. [2023-12-21 10:18:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 66 states have internal predecessors, (68), 7 states have call successors, (7), 3 states have call predecessors, (7), 24 states have return successors, (69), 27 states have call predecessors, (69), 7 states have call successors, (69) [2023-12-21 10:18:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 144 transitions. [2023-12-21 10:18:39,886 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 144 transitions. Word has length 250 [2023-12-21 10:18:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:18:39,886 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 144 transitions. [2023-12-21 10:18:39,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 207 states, 203 states have (on average 1.374384236453202) internal successors, (279), 116 states have internal predecessors, (279), 39 states have call successors, (39), 1 states have call predecessors, (39), 69 states have return successors, (92), 91 states have call predecessors, (92), 39 states have call successors, (92) [2023-12-21 10:18:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 144 transitions. [2023-12-21 10:18:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-21 10:18:39,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:18:39,888 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:18:39,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 10:18:40,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 10:18:40,095 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:18:40,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:18:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash 808950010, now seen corresponding path program 24 times [2023-12-21 10:18:40,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:18:40,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516270467] [2023-12-21 10:18:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:18:40,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:18:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:40,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:40,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:18:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:41,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:42,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:43,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:44,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:44,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:44,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:45,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:45,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:45,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:46,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:46,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:46,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:46,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:46,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2006 backedges. 88 proven. 941 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2023-12-21 10:18:46,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:18:46,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516270467] [2023-12-21 10:18:46,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516270467] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:18:46,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157270032] [2023-12-21 10:18:46,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:18:46,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:18:46,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:18:46,990 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:18:46,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 10:18:47,478 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-12-21 10:18:47,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:18:47,483 WARN L260 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 300 conjunts are in the unsatisfiable core [2023-12-21 10:18:47,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:18:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2006 backedges. 48 proven. 937 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2023-12-21 10:18:50,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:19:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2006 backedges. 75 proven. 1631 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-21 10:19:02,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157270032] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:19:02,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:19:02,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 56, 82] total 163 [2023-12-21 10:19:02,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035185850] [2023-12-21 10:19:02,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:19:02,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2023-12-21 10:19:02,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:19:02,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2023-12-21 10:19:02,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=25791, Unknown=0, NotChecked=0, Total=26406 [2023-12-21 10:19:02,107 INFO L87 Difference]: Start difference. First operand 97 states and 144 transitions. Second operand has 163 states, 158 states have (on average 1.3734177215189873) internal successors, (217), 91 states have internal predecessors, (217), 29 states have call successors, (29), 1 states have call predecessors, (29), 50 states have return successors, (74), 72 states have call predecessors, (74), 29 states have call successors, (74) [2023-12-21 10:19:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:19:06,369 INFO L93 Difference]: Finished difference Result 118 states and 175 transitions. [2023-12-21 10:19:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 10:19:06,369 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 158 states have (on average 1.3734177215189873) internal successors, (217), 91 states have internal predecessors, (217), 29 states have call successors, (29), 1 states have call predecessors, (29), 50 states have return successors, (74), 72 states have call predecessors, (74), 29 states have call successors, (74) Word has length 180 [2023-12-21 10:19:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:19:06,371 INFO L225 Difference]: With dead ends: 118 [2023-12-21 10:19:06,371 INFO L226 Difference]: Without dead ends: 111 [2023-12-21 10:19:06,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10108 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2670, Invalid=44202, Unknown=0, NotChecked=0, Total=46872 [2023-12-21 10:19:06,377 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 158 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 7998 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 8051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 7998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:19:06,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 2303 Invalid, 8051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 7998 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 10:19:06,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-21 10:19:06,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2023-12-21 10:19:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.044776119402985) internal successors, (70), 68 states have internal predecessors, (70), 7 states have call successors, (7), 3 states have call predecessors, (7), 25 states have return successors, (72), 28 states have call predecessors, (72), 7 states have call successors, (72) [2023-12-21 10:19:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 149 transitions. [2023-12-21 10:19:06,450 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 149 transitions. Word has length 180 [2023-12-21 10:19:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:19:06,450 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 149 transitions. [2023-12-21 10:19:06,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 158 states have (on average 1.3734177215189873) internal successors, (217), 91 states have internal predecessors, (217), 29 states have call successors, (29), 1 states have call predecessors, (29), 50 states have return successors, (74), 72 states have call predecessors, (74), 29 states have call successors, (74) [2023-12-21 10:19:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 149 transitions. [2023-12-21 10:19:06,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-21 10:19:06,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:19:06,452 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 36, 36, 36, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:19:06,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 10:19:06,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 10:19:06,664 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:19:06,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:19:06,666 INFO L85 PathProgramCache]: Analyzing trace with hash -561203078, now seen corresponding path program 25 times [2023-12-21 10:19:06,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:19:06,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669287264] [2023-12-21 10:19:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:19:06,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:19:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:07,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:09,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:09,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:09,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:09,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:09,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:09,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:10,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:10,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 10:19:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:10,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:12,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:14,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:14,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:16,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:16,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:16,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:16,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:17,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:17,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 140 proven. 2176 refuted. 0 times theorem prover too weak. 2459 trivial. 0 not checked. [2023-12-21 10:19:18,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:19:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669287264] [2023-12-21 10:19:18,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669287264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:19:18,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142123912] [2023-12-21 10:19:18,234 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:19:18,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:19:18,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:19:18,235 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:19:18,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 10:19:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:18,842 WARN L260 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 457 conjunts are in the unsatisfiable core [2023-12-21 10:19:18,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:19:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 22 proven. 2114 refuted. 0 times theorem prover too weak. 2639 trivial. 0 not checked. [2023-12-21 10:19:23,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:19:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 149 proven. 3919 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2023-12-21 10:19:39,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142123912] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:19:39,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:19:39,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 54, 117] total 224 [2023-12-21 10:19:39,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329229226] [2023-12-21 10:19:39,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:19:39,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 224 states [2023-12-21 10:19:39,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:19:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2023-12-21 10:19:39,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=888, Invalid=49064, Unknown=0, NotChecked=0, Total=49952 [2023-12-21 10:19:39,458 INFO L87 Difference]: Start difference. First operand 100 states and 149 transitions. Second operand has 224 states, 220 states have (on average 1.3727272727272728) internal successors, (302), 125 states have internal predecessors, (302), 42 states have call successors, (42), 1 states have call predecessors, (42), 75 states have return successors, (100), 99 states have call predecessors, (100), 42 states have call successors, (100) [2023-12-21 10:19:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:19:49,859 INFO L93 Difference]: Finished difference Result 142 states and 222 transitions. [2023-12-21 10:19:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-21 10:19:49,860 INFO L78 Accepts]: Start accepts. Automaton has has 224 states, 220 states have (on average 1.3727272727272728) internal successors, (302), 125 states have internal predecessors, (302), 42 states have call successors, (42), 1 states have call predecessors, (42), 75 states have return successors, (100), 99 states have call predecessors, (100), 42 states have call successors, (100) Word has length 271 [2023-12-21 10:19:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:19:49,861 INFO L225 Difference]: With dead ends: 142 [2023-12-21 10:19:49,861 INFO L226 Difference]: Without dead ends: 114 [2023-12-21 10:19:49,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18172 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=4760, Invalid=85540, Unknown=0, NotChecked=0, Total=90300 [2023-12-21 10:19:49,866 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 444 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 16523 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 16721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 16523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:19:49,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 3527 Invalid, 16721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 16523 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-21 10:19:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-21 10:19:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2023-12-21 10:19:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 70 states have internal predecessors, (72), 7 states have call successors, (7), 3 states have call predecessors, (7), 26 states have return successors, (75), 29 states have call predecessors, (75), 7 states have call successors, (75) [2023-12-21 10:19:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 154 transitions. [2023-12-21 10:19:49,876 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 154 transitions. Word has length 271 [2023-12-21 10:19:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:19:49,876 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 154 transitions. [2023-12-21 10:19:49,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 224 states, 220 states have (on average 1.3727272727272728) internal successors, (302), 125 states have internal predecessors, (302), 42 states have call successors, (42), 1 states have call predecessors, (42), 75 states have return successors, (100), 99 states have call predecessors, (100), 42 states have call successors, (100) [2023-12-21 10:19:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 154 transitions. [2023-12-21 10:19:49,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-12-21 10:19:49,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:19:49,878 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 38, 38, 38, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:19:49,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 10:19:50,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-21 10:19:50,086 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:19:50,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:19:50,086 INFO L85 PathProgramCache]: Analyzing trace with hash 90918956, now seen corresponding path program 26 times [2023-12-21 10:19:50,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:19:50,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679558519] [2023-12-21 10:19:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:19:50,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:19:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:51,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:52,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:52,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:53,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:53,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:53,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:53,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:53,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 10:19:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:54,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:56,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:57,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:58,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:59,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:59,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:00,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:00,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:01,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:01,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:02,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:02,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:02,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 148 proven. 2411 refuted. 0 times theorem prover too weak. 2747 trivial. 0 not checked. [2023-12-21 10:20:02,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:20:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679558519] [2023-12-21 10:20:02,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679558519] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:20:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356591602] [2023-12-21 10:20:02,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:20:02,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:20:02,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:20:02,735 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:20:02,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 10:20:03,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:20:03,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:20:03,402 WARN L260 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 481 conjunts are in the unsatisfiable core [2023-12-21 10:20:03,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:20:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 23 proven. 2345 refuted. 0 times theorem prover too weak. 2938 trivial. 0 not checked. [2023-12-21 10:20:07,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:20:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 158 proven. 4364 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2023-12-21 10:20:28,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356591602] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:20:28,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:20:28,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 56, 123] total 235 [2023-12-21 10:20:28,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19525953] [2023-12-21 10:20:28,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:20:28,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 235 states [2023-12-21 10:20:28,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:20:28,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2023-12-21 10:20:28,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=54056, Unknown=0, NotChecked=0, Total=54990 [2023-12-21 10:20:28,612 INFO L87 Difference]: Start difference. First operand 103 states and 154 transitions. Second operand has 235 states, 231 states have (on average 1.3722943722943723) internal successors, (317), 131 states have internal predecessors, (317), 44 states have call successors, (44), 1 states have call predecessors, (44), 79 states have return successors, (105), 104 states have call predecessors, (105), 44 states have call successors, (105) [2023-12-21 10:20:39,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:20:39,328 INFO L93 Difference]: Finished difference Result 146 states and 229 transitions. [2023-12-21 10:20:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-21 10:20:39,329 INFO L78 Accepts]: Start accepts. Automaton has has 235 states, 231 states have (on average 1.3722943722943723) internal successors, (317), 131 states have internal predecessors, (317), 44 states have call successors, (44), 1 states have call predecessors, (44), 79 states have return successors, (105), 104 states have call predecessors, (105), 44 states have call successors, (105) Word has length 285 [2023-12-21 10:20:39,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:20:39,330 INFO L225 Difference]: With dead ends: 146 [2023-12-21 10:20:39,330 INFO L226 Difference]: Without dead ends: 117 [2023-12-21 10:20:39,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19883 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=5120, Invalid=93790, Unknown=0, NotChecked=0, Total=98910 [2023-12-21 10:20:39,336 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 864 mSDsluCounter, 3940 mSDsCounter, 0 mSdLazyCounter, 19551 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 19947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 19551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:20:39,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 3975 Invalid, 19947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 19551 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-21 10:20:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-21 10:20:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2023-12-21 10:20:39,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 72 states have internal predecessors, (74), 7 states have call successors, (7), 3 states have call predecessors, (7), 27 states have return successors, (78), 30 states have call predecessors, (78), 7 states have call successors, (78) [2023-12-21 10:20:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 159 transitions. [2023-12-21 10:20:39,352 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 159 transitions. Word has length 285 [2023-12-21 10:20:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:20:39,352 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 159 transitions. [2023-12-21 10:20:39,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 235 states, 231 states have (on average 1.3722943722943723) internal successors, (317), 131 states have internal predecessors, (317), 44 states have call successors, (44), 1 states have call predecessors, (44), 79 states have return successors, (105), 104 states have call predecessors, (105), 44 states have call successors, (105) [2023-12-21 10:20:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 159 transitions. [2023-12-21 10:20:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-12-21 10:20:39,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:20:39,354 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 40, 40, 40, 40, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:20:39,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 10:20:39,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 10:20:39,561 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:20:39,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:20:39,562 INFO L85 PathProgramCache]: Analyzing trace with hash -141984070, now seen corresponding path program 27 times [2023-12-21 10:20:39,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:20:39,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2769738] [2023-12-21 10:20:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:20:39,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:20:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:41,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:42,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:42,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:42,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:43,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:43,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:43,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:43,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:43,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:43,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 10:20:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:44,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:46,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:47,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:49,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:49,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:51,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:51,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:52,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:52,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:52,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:52,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:53,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 156 proven. 2658 refuted. 0 times theorem prover too weak. 3051 trivial. 0 not checked. [2023-12-21 10:20:53,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:20:53,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2769738] [2023-12-21 10:20:53,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2769738] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:20:53,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383428333] [2023-12-21 10:20:53,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:20:53,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:20:53,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:20:53,559 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:20:53,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 10:20:54,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2023-12-21 10:20:54,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:20:54,361 WARN L260 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 505 conjunts are in the unsatisfiable core [2023-12-21 10:20:54,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:20:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 24 proven. 2588 refuted. 0 times theorem prover too weak. 3253 trivial. 0 not checked. [2023-12-21 10:20:58,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:21:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 167 proven. 4833 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2023-12-21 10:21:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383428333] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:21:20,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:21:20,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 58, 129] total 246 [2023-12-21 10:21:20,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772091601] [2023-12-21 10:21:20,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:21:20,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 246 states [2023-12-21 10:21:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:21:20,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2023-12-21 10:21:20,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=980, Invalid=59290, Unknown=0, NotChecked=0, Total=60270 [2023-12-21 10:21:20,453 INFO L87 Difference]: Start difference. First operand 106 states and 159 transitions. Second operand has 246 states, 242 states have (on average 1.371900826446281) internal successors, (332), 137 states have internal predecessors, (332), 46 states have call successors, (46), 1 states have call predecessors, (46), 83 states have return successors, (110), 109 states have call predecessors, (110), 46 states have call successors, (110) [2023-12-21 10:21:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:21:33,078 INFO L93 Difference]: Finished difference Result 150 states and 236 transitions. [2023-12-21 10:21:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-21 10:21:33,078 INFO L78 Accepts]: Start accepts. Automaton has has 246 states, 242 states have (on average 1.371900826446281) internal successors, (332), 137 states have internal predecessors, (332), 46 states have call successors, (46), 1 states have call predecessors, (46), 83 states have return successors, (110), 109 states have call predecessors, (110), 46 states have call successors, (110) Word has length 299 [2023-12-21 10:21:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:21:33,079 INFO L225 Difference]: With dead ends: 150 [2023-12-21 10:21:33,079 INFO L226 Difference]: Without dead ends: 120 [2023-12-21 10:21:33,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21682 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=5492, Invalid=102420, Unknown=0, NotChecked=0, Total=107912 [2023-12-21 10:21:33,086 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1153 mSDsluCounter, 4424 mSDsCounter, 0 mSdLazyCounter, 21226 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 4460 SdHoareTripleChecker+Invalid, 21776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 21226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:21:33,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 4460 Invalid, 21776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [550 Valid, 21226 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-21 10:21:33,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-21 10:21:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2023-12-21 10:21:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 74 states have internal predecessors, (76), 7 states have call successors, (7), 3 states have call predecessors, (7), 28 states have return successors, (81), 31 states have call predecessors, (81), 7 states have call successors, (81) [2023-12-21 10:21:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 164 transitions. [2023-12-21 10:21:33,096 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 164 transitions. Word has length 299 [2023-12-21 10:21:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:21:33,097 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 164 transitions. [2023-12-21 10:21:33,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 246 states, 242 states have (on average 1.371900826446281) internal successors, (332), 137 states have internal predecessors, (332), 46 states have call successors, (46), 1 states have call predecessors, (46), 83 states have return successors, (110), 109 states have call predecessors, (110), 46 states have call successors, (110) [2023-12-21 10:21:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 164 transitions. [2023-12-21 10:21:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-21 10:21:33,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:21:33,098 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 27, 27, 27, 27, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:21:33,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-21 10:21:33,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:21:33,307 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:21:33,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:21:33,307 INFO L85 PathProgramCache]: Analyzing trace with hash 900774234, now seen corresponding path program 28 times [2023-12-21 10:21:33,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:21:33,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689048979] [2023-12-21 10:21:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:21:33,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:21:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:34,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:21:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:35,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:37,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:37,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:39,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:40,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:41,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:42,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:42,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:43,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:43,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 104 proven. 1267 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2023-12-21 10:21:43,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:21:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689048979] [2023-12-21 10:21:43,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689048979] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:21:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697362060] [2023-12-21 10:21:43,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:21:43,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:21:43,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:21:43,665 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:21:43,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 10:21:44,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:21:44,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:21:44,449 WARN L260 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 349 conjunts are in the unsatisfiable core [2023-12-21 10:21:44,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:21:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 25 proven. 1238 refuted. 0 times theorem prover too weak. 1469 trivial. 0 not checked. [2023-12-21 10:21:48,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:22:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 86 proven. 2236 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2023-12-21 10:22:00,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697362060] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:22:00,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:22:00,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 60, 90] total 182 [2023-12-21 10:22:00,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246969336] [2023-12-21 10:22:00,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:22:00,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2023-12-21 10:22:00,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:22:00,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2023-12-21 10:22:00,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=32276, Unknown=0, NotChecked=0, Total=32942 [2023-12-21 10:22:00,586 INFO L87 Difference]: Start difference. First operand 109 states and 164 transitions. Second operand has 182 states, 178 states have (on average 1.3595505617977528) internal successors, (242), 98 states have internal predecessors, (242), 33 states have call successors, (33), 1 states have call predecessors, (33), 57 states have return successors, (85), 84 states have call predecessors, (85), 33 states have call successors, (85) [2023-12-21 10:22:05,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:22:05,659 INFO L93 Difference]: Finished difference Result 130 states and 195 transitions. [2023-12-21 10:22:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-21 10:22:05,659 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 178 states have (on average 1.3595505617977528) internal successors, (242), 98 states have internal predecessors, (242), 33 states have call successors, (33), 1 states have call predecessors, (33), 57 states have return successors, (85), 84 states have call predecessors, (85), 33 states have call successors, (85) Word has length 208 [2023-12-21 10:22:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:22:05,660 INFO L225 Difference]: With dead ends: 130 [2023-12-21 10:22:05,661 INFO L226 Difference]: Without dead ends: 123 [2023-12-21 10:22:05,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12668 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=3056, Invalid=56236, Unknown=0, NotChecked=0, Total=59292 [2023-12-21 10:22:05,666 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1213 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 9128 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 9683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 9128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:22:05,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 2443 Invalid, 9683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 9128 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-21 10:22:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-21 10:22:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 112. [2023-12-21 10:22:05,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 75 states have (on average 1.04) internal successors, (78), 76 states have internal predecessors, (78), 7 states have call successors, (7), 3 states have call predecessors, (7), 29 states have return successors, (84), 32 states have call predecessors, (84), 7 states have call successors, (84) [2023-12-21 10:22:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2023-12-21 10:22:05,676 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 208 [2023-12-21 10:22:05,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:22:05,676 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2023-12-21 10:22:05,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 178 states have (on average 1.3595505617977528) internal successors, (242), 98 states have internal predecessors, (242), 33 states have call successors, (33), 1 states have call predecessors, (33), 57 states have return successors, (85), 84 states have call predecessors, (85), 33 states have call successors, (85) [2023-12-21 10:22:05,677 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2023-12-21 10:22:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-12-21 10:22:05,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:22:05,678 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 43, 43, 43, 43, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:22:05,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-21 10:22:05,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:22:05,886 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:22:05,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:22:05,887 INFO L85 PathProgramCache]: Analyzing trace with hash -838922936, now seen corresponding path program 29 times [2023-12-21 10:22:05,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:22:05,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100666035] [2023-12-21 10:22:05,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:22:05,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:22:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:07,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:08,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:08,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:08,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:09,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:10,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:10,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:11,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 10:22:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:12,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:15,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:18,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:19,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:19,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:20,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:20,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:21,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:21,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:22,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:22,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:22:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:22:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6756 backedges. 168 proven. 3051 refuted. 0 times theorem prover too weak. 3537 trivial. 0 not checked. [2023-12-21 10:22:23,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:22:23,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100666035] [2023-12-21 10:22:23,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100666035] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:22:23,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955866859] [2023-12-21 10:22:23,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:22:23,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:22:23,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:22:23,137 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:22:23,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-21 10:22:24,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2023-12-21 10:22:24,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:22:24,036 WARN L260 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 541 conjunts are in the unsatisfiable core [2023-12-21 10:22:24,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:22:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6756 backedges. 26 proven. 2976 refuted. 0 times theorem prover too weak. 3754 trivial. 0 not checked. [2023-12-21 10:22:28,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:22:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6756 backedges. 179 proven. 5583 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2023-12-21 10:22:55,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955866859] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:22:55,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:22:55,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 62, 138] total 263 [2023-12-21 10:22:55,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423017306] [2023-12-21 10:22:55,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:22:55,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 263 states [2023-12-21 10:22:55,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:22:55,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 263 interpolants. [2023-12-21 10:22:55,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=67858, Unknown=0, NotChecked=0, Total=68906 [2023-12-21 10:22:55,490 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand has 263 states, 259 states have (on average 1.3706563706563706) internal successors, (355), 146 states have internal predecessors, (355), 49 states have call successors, (49), 1 states have call predecessors, (49), 89 states have return successors, (118), 117 states have call predecessors, (118), 49 states have call successors, (118) [2023-12-21 10:23:09,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:23:09,215 INFO L93 Difference]: Finished difference Result 158 states and 250 transitions. [2023-12-21 10:23:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-21 10:23:09,216 INFO L78 Accepts]: Start accepts. Automaton has has 263 states, 259 states have (on average 1.3706563706563706) internal successors, (355), 146 states have internal predecessors, (355), 49 states have call successors, (49), 1 states have call predecessors, (49), 89 states have return successors, (118), 117 states have call predecessors, (118), 49 states have call successors, (118) Word has length 320 [2023-12-21 10:23:09,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:23:09,217 INFO L225 Difference]: With dead ends: 158 [2023-12-21 10:23:09,217 INFO L226 Difference]: Without dead ends: 126 [2023-12-21 10:23:09,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24851 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=6158, Invalid=117394, Unknown=0, NotChecked=0, Total=123552 [2023-12-21 10:23:09,246 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1245 mSDsluCounter, 4503 mSDsCounter, 0 mSdLazyCounter, 22009 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 22594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 22009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:23:09,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 4542 Invalid, 22594 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [585 Valid, 22009 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-21 10:23:09,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-21 10:23:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 115. [2023-12-21 10:23:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 78 states have internal predecessors, (80), 7 states have call successors, (7), 3 states have call predecessors, (7), 30 states have return successors, (87), 33 states have call predecessors, (87), 7 states have call successors, (87) [2023-12-21 10:23:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 174 transitions. [2023-12-21 10:23:09,257 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 174 transitions. Word has length 320 [2023-12-21 10:23:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:23:09,257 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 174 transitions. [2023-12-21 10:23:09,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 263 states, 259 states have (on average 1.3706563706563706) internal successors, (355), 146 states have internal predecessors, (355), 49 states have call successors, (49), 1 states have call predecessors, (49), 89 states have return successors, (118), 117 states have call predecessors, (118), 49 states have call successors, (118) [2023-12-21 10:23:09,258 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 174 transitions. [2023-12-21 10:23:09,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-21 10:23:09,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:23:09,259 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 45, 45, 45, 45, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:23:09,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-21 10:23:09,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-21 10:23:09,468 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:23:09,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:23:09,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1608880650, now seen corresponding path program 30 times [2023-12-21 10:23:09,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:23:09,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637599741] [2023-12-21 10:23:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:23:09,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:23:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:11,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:13,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:14,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:14,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:14,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 10:23:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:21,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:22,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:24,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:24,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:25,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:26,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:26,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:27,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:27,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:27,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:27,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:23:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:23:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7385 backedges. 176 proven. 3328 refuted. 0 times theorem prover too weak. 3881 trivial. 0 not checked. [2023-12-21 10:23:28,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:23:28,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637599741] [2023-12-21 10:23:28,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637599741] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:23:28,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928441947] [2023-12-21 10:23:28,062 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:23:28,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:23:28,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:23:28,064 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:23:28,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-21 10:23:29,110 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2023-12-21 10:23:29,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:23:29,120 WARN L260 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 565 conjunts are in the unsatisfiable core [2023-12-21 10:23:29,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:23:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7385 backedges. 27 proven. 3249 refuted. 0 times theorem prover too weak. 4109 trivial. 0 not checked. [2023-12-21 10:23:34,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:24:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7385 backedges. 188 proven. 6112 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2023-12-21 10:24:01,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928441947] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:24:01,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:24:01,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 64, 144] total 274 [2023-12-21 10:24:01,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811308649] [2023-12-21 10:24:01,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:24:01,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 274 states [2023-12-21 10:24:01,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:24:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 274 interpolants. [2023-12-21 10:24:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=73708, Unknown=0, NotChecked=0, Total=74802 [2023-12-21 10:24:01,014 INFO L87 Difference]: Start difference. First operand 115 states and 174 transitions. Second operand has 274 states, 270 states have (on average 1.3703703703703705) internal successors, (370), 152 states have internal predecessors, (370), 51 states have call successors, (51), 1 states have call predecessors, (51), 93 states have return successors, (123), 122 states have call predecessors, (123), 51 states have call successors, (123) [2023-12-21 10:24:13,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:24:13,245 INFO L93 Difference]: Finished difference Result 162 states and 257 transitions. [2023-12-21 10:24:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-21 10:24:13,246 INFO L78 Accepts]: Start accepts. Automaton has has 274 states, 270 states have (on average 1.3703703703703705) internal successors, (370), 152 states have internal predecessors, (370), 51 states have call successors, (51), 1 states have call predecessors, (51), 93 states have return successors, (123), 122 states have call predecessors, (123), 51 states have call successors, (123) Word has length 334 [2023-12-21 10:24:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:24:13,247 INFO L225 Difference]: With dead ends: 162 [2023-12-21 10:24:13,247 INFO L226 Difference]: Without dead ends: 129 [2023-12-21 10:24:13,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26860 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=6563, Invalid=127027, Unknown=0, NotChecked=0, Total=133590 [2023-12-21 10:24:13,255 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 366 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 20656 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 3671 SdHoareTripleChecker+Invalid, 20830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 20656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:24:13,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 3671 Invalid, 20830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 20656 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-21 10:24:13,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-21 10:24:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 118. [2023-12-21 10:24:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 80 states have internal predecessors, (82), 7 states have call successors, (7), 3 states have call predecessors, (7), 31 states have return successors, (90), 34 states have call predecessors, (90), 7 states have call successors, (90) [2023-12-21 10:24:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 179 transitions. [2023-12-21 10:24:13,280 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 179 transitions. Word has length 334 [2023-12-21 10:24:13,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:24:13,280 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 179 transitions. [2023-12-21 10:24:13,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 274 states, 270 states have (on average 1.3703703703703705) internal successors, (370), 152 states have internal predecessors, (370), 51 states have call successors, (51), 1 states have call predecessors, (51), 93 states have return successors, (123), 122 states have call predecessors, (123), 51 states have call successors, (123) [2023-12-21 10:24:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 179 transitions. [2023-12-21 10:24:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-21 10:24:13,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:24:13,282 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 47, 47, 47, 47, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:24:13,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-21 10:24:13,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:24:13,496 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:24:13,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:24:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2021268952, now seen corresponding path program 31 times [2023-12-21 10:24:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:24:13,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918129334] [2023-12-21 10:24:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:24:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:24:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:16,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:19,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:19,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 10:24:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:21,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:22,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:28,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:28,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:30,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:32,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:33,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:33,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:33,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:33,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:34,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:34,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:34,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:24:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8042 backedges. 184 proven. 3617 refuted. 0 times theorem prover too weak. 4241 trivial. 0 not checked. [2023-12-21 10:24:35,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:24:35,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918129334] [2023-12-21 10:24:35,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918129334] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:24:35,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995288512] [2023-12-21 10:24:35,168 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:24:35,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:24:35,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:24:35,169 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:24:35,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-21 10:24:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:24:36,243 WARN L260 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 589 conjunts are in the unsatisfiable core [2023-12-21 10:24:36,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:24:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8042 backedges. 28 proven. 3534 refuted. 0 times theorem prover too weak. 4480 trivial. 0 not checked. [2023-12-21 10:24:42,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:25:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8042 backedges. 197 proven. 6665 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2023-12-21 10:25:09,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995288512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:25:09,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:25:09,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 66, 150] total 285 [2023-12-21 10:25:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171386033] [2023-12-21 10:25:09,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:25:09,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 285 states [2023-12-21 10:25:09,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:25:09,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 285 interpolants. [2023-12-21 10:25:09,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1140, Invalid=79800, Unknown=0, NotChecked=0, Total=80940 [2023-12-21 10:25:09,759 INFO L87 Difference]: Start difference. First operand 118 states and 179 transitions. Second operand has 285 states, 281 states have (on average 1.3701067615658362) internal successors, (385), 158 states have internal predecessors, (385), 53 states have call successors, (53), 1 states have call predecessors, (53), 97 states have return successors, (128), 127 states have call predecessors, (128), 53 states have call successors, (128) [2023-12-21 10:25:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:25:24,724 INFO L93 Difference]: Finished difference Result 166 states and 264 transitions. [2023-12-21 10:25:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-12-21 10:25:24,724 INFO L78 Accepts]: Start accepts. Automaton has has 285 states, 281 states have (on average 1.3701067615658362) internal successors, (385), 158 states have internal predecessors, (385), 53 states have call successors, (53), 1 states have call predecessors, (53), 97 states have return successors, (128), 127 states have call predecessors, (128), 53 states have call successors, (128) Word has length 348 [2023-12-21 10:25:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:25:24,725 INFO L225 Difference]: With dead ends: 166 [2023-12-21 10:25:24,725 INFO L226 Difference]: Without dead ends: 132 [2023-12-21 10:25:24,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28934 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=6980, Invalid=137040, Unknown=0, NotChecked=0, Total=144020 [2023-12-21 10:25:24,734 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 967 mSDsluCounter, 5456 mSDsCounter, 0 mSdLazyCounter, 26164 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 5497 SdHoareTripleChecker+Invalid, 26627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 26164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:25:24,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 5497 Invalid, 26627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [463 Valid, 26164 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-21 10:25:24,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-21 10:25:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2023-12-21 10:25:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 81 states have (on average 1.037037037037037) internal successors, (84), 82 states have internal predecessors, (84), 7 states have call successors, (7), 3 states have call predecessors, (7), 32 states have return successors, (93), 35 states have call predecessors, (93), 7 states have call successors, (93) [2023-12-21 10:25:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2023-12-21 10:25:24,745 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 348 [2023-12-21 10:25:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:25:24,745 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2023-12-21 10:25:24,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 285 states, 281 states have (on average 1.3701067615658362) internal successors, (385), 158 states have internal predecessors, (385), 53 states have call successors, (53), 1 states have call predecessors, (53), 97 states have return successors, (128), 127 states have call predecessors, (128), 53 states have call successors, (128) [2023-12-21 10:25:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2023-12-21 10:25:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-21 10:25:24,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:25:24,747 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 49, 49, 49, 49, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:25:24,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-21 10:25:24,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:25:24,958 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:25:24,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:25:24,958 INFO L85 PathProgramCache]: Analyzing trace with hash 467542474, now seen corresponding path program 32 times [2023-12-21 10:25:24,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:25:24,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749238650] [2023-12-21 10:25:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:25:24,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:25:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:28,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:28,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:29,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:29,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:29,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:30,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:30,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:31,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:31,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:31,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:32,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:32,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 10:25:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:38,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:39,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:43,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:46,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:47,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:47,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:47,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:48,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:48,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:25:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:25:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8727 backedges. 192 proven. 3918 refuted. 0 times theorem prover too weak. 4617 trivial. 0 not checked. [2023-12-21 10:25:48,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:25:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749238650] [2023-12-21 10:25:48,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749238650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:25:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797712299] [2023-12-21 10:25:48,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:25:48,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:25:48,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:25:48,694 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:25:48,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-21 10:25:49,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:25:49,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:25:49,917 WARN L260 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 613 conjunts are in the unsatisfiable core [2023-12-21 10:25:49,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:25:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8727 backedges. 29 proven. 3831 refuted. 0 times theorem prover too weak. 4867 trivial. 0 not checked. [2023-12-21 10:25:55,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:26:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8727 backedges. 206 proven. 7242 refuted. 0 times theorem prover too weak. 1279 trivial. 0 not checked. [2023-12-21 10:26:24,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797712299] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:26:24,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:26:24,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 68, 156] total 296 [2023-12-21 10:26:24,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410524012] [2023-12-21 10:26:24,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:26:24,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 296 states [2023-12-21 10:26:24,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:26:24,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 296 interpolants. [2023-12-21 10:26:24,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1186, Invalid=86134, Unknown=0, NotChecked=0, Total=87320 [2023-12-21 10:26:24,588 INFO L87 Difference]: Start difference. First operand 121 states and 184 transitions. Second operand has 296 states, 292 states have (on average 1.36986301369863) internal successors, (400), 164 states have internal predecessors, (400), 55 states have call successors, (55), 1 states have call predecessors, (55), 101 states have return successors, (133), 132 states have call predecessors, (133), 55 states have call successors, (133) [2023-12-21 10:26:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:26:41,373 INFO L93 Difference]: Finished difference Result 170 states and 271 transitions. [2023-12-21 10:26:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-12-21 10:26:41,373 INFO L78 Accepts]: Start accepts. Automaton has has 296 states, 292 states have (on average 1.36986301369863) internal successors, (400), 164 states have internal predecessors, (400), 55 states have call successors, (55), 1 states have call predecessors, (55), 101 states have return successors, (133), 132 states have call predecessors, (133), 55 states have call successors, (133) Word has length 362 [2023-12-21 10:26:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:26:41,375 INFO L225 Difference]: With dead ends: 170 [2023-12-21 10:26:41,375 INFO L226 Difference]: Without dead ends: 135 [2023-12-21 10:26:41,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31098 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=7409, Invalid=147433, Unknown=0, NotChecked=0, Total=154842 [2023-12-21 10:26:41,384 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 692 mSDsluCounter, 4281 mSDsCounter, 0 mSdLazyCounter, 25353 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 4321 SdHoareTripleChecker+Invalid, 25686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 25353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:26:41,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 4321 Invalid, 25686 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [333 Valid, 25353 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-12-21 10:26:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-21 10:26:41,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 124. [2023-12-21 10:26:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 83 states have (on average 1.036144578313253) internal successors, (86), 84 states have internal predecessors, (86), 7 states have call successors, (7), 3 states have call predecessors, (7), 33 states have return successors, (96), 36 states have call predecessors, (96), 7 states have call successors, (96) [2023-12-21 10:26:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 189 transitions. [2023-12-21 10:26:41,396 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 189 transitions. Word has length 362 [2023-12-21 10:26:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:26:41,396 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 189 transitions. [2023-12-21 10:26:41,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 296 states, 292 states have (on average 1.36986301369863) internal successors, (400), 164 states have internal predecessors, (400), 55 states have call successors, (55), 1 states have call predecessors, (55), 101 states have return successors, (133), 132 states have call predecessors, (133), 55 states have call successors, (133) [2023-12-21 10:26:41,396 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 189 transitions. [2023-12-21 10:26:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-21 10:26:41,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:26:41,398 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 32, 32, 32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:26:41,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-21 10:26:41,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-21 10:26:41,609 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:26:41,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:26:41,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2119242010, now seen corresponding path program 33 times [2023-12-21 10:26:41,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:26:41,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874651535] [2023-12-21 10:26:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:26:41,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:26:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:42,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:26:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:45,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:51,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:52,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:53,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:53,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:56,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:57,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:57,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:58,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:58,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:58,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:59,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:59,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 124 proven. 1742 refuted. 0 times theorem prover too weak. 1931 trivial. 0 not checked. [2023-12-21 10:26:59,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:26:59,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874651535] [2023-12-21 10:26:59,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874651535] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:26:59,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465790397] [2023-12-21 10:26:59,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:26:59,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:26:59,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:26:59,382 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:26:59,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-21 10:27:00,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2023-12-21 10:27:00,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:27:00,683 WARN L260 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 409 conjunts are in the unsatisfiable core [2023-12-21 10:27:00,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:27:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 30 proven. 1708 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2023-12-21 10:27:04,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:27:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 101 proven. 3131 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-12-21 10:27:21,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465790397] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:27:21,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:27:21,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 70, 105] total 212 [2023-12-21 10:27:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756891846] [2023-12-21 10:27:21,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:27:21,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 212 states [2023-12-21 10:27:21,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:27:21,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2023-12-21 10:27:21,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=776, Invalid=43956, Unknown=0, NotChecked=0, Total=44732 [2023-12-21 10:27:21,736 INFO L87 Difference]: Start difference. First operand 124 states and 189 transitions. Second operand has 212 states, 208 states have (on average 1.3557692307692308) internal successors, (282), 113 states have internal predecessors, (282), 38 states have call successors, (38), 1 states have call predecessors, (38), 67 states have return successors, (100), 99 states have call predecessors, (100), 38 states have call successors, (100) [2023-12-21 10:27:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:27:31,305 INFO L93 Difference]: Finished difference Result 145 states and 220 transitions. [2023-12-21 10:27:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-21 10:27:31,306 INFO L78 Accepts]: Start accepts. Automaton has has 212 states, 208 states have (on average 1.3557692307692308) internal successors, (282), 113 states have internal predecessors, (282), 38 states have call successors, (38), 1 states have call predecessors, (38), 67 states have return successors, (100), 99 states have call predecessors, (100), 38 states have call successors, (100) Word has length 243 [2023-12-21 10:27:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:27:31,309 INFO L225 Difference]: With dead ends: 145 [2023-12-21 10:27:31,309 INFO L226 Difference]: Without dead ends: 138 [2023-12-21 10:27:31,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17228 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=3916, Invalid=76456, Unknown=0, NotChecked=0, Total=80372 [2023-12-21 10:27:31,314 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1100 mSDsluCounter, 3800 mSDsCounter, 0 mSdLazyCounter, 13920 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 3842 SdHoareTripleChecker+Invalid, 14427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 13920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:27:31,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 3842 Invalid, 14427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 13920 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-21 10:27:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-21 10:27:31,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 127. [2023-12-21 10:27:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 85 states have (on average 1.035294117647059) internal successors, (88), 86 states have internal predecessors, (88), 7 states have call successors, (7), 3 states have call predecessors, (7), 34 states have return successors, (99), 37 states have call predecessors, (99), 7 states have call successors, (99) [2023-12-21 10:27:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 194 transitions. [2023-12-21 10:27:31,334 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 194 transitions. Word has length 243 [2023-12-21 10:27:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:27:31,334 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 194 transitions. [2023-12-21 10:27:31,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 212 states, 208 states have (on average 1.3557692307692308) internal successors, (282), 113 states have internal predecessors, (282), 38 states have call successors, (38), 1 states have call predecessors, (38), 67 states have return successors, (100), 99 states have call predecessors, (100), 38 states have call successors, (100) [2023-12-21 10:27:31,334 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 194 transitions. [2023-12-21 10:27:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-21 10:27:31,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:27:31,337 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 52, 52, 52, 52, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:27:31,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-21 10:27:31,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-21 10:27:31,549 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:27:31,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:27:31,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1375539140, now seen corresponding path program 34 times [2023-12-21 10:27:31,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:27:31,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989273679] [2023-12-21 10:27:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:27:31,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:27:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:33,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:35,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:36,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:36,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:37,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:37,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:38,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:38,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:38,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:39,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:39,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:39,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 10:27:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:41,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:46,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:50,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:52,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:54,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:56,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:58,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:58,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:59,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 9807 backedges. 204 proven. 4392 refuted. 0 times theorem prover too weak. 5211 trivial. 0 not checked. [2023-12-21 10:27:59,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:27:59,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989273679] [2023-12-21 10:27:59,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989273679] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:27:59,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905856048] [2023-12-21 10:27:59,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:27:59,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:27:59,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:27:59,397 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:27:59,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-21 10:28:00,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:28:00,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:28:00,781 WARN L260 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 649 conjunts are in the unsatisfiable core [2023-12-21 10:28:00,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:28:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9807 backedges. 31 proven. 4300 refuted. 0 times theorem prover too weak. 5476 trivial. 0 not checked. [2023-12-21 10:28:06,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-21 10:28:08,924 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 10:28:08,930 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 [2023-12-21 10:28:08,930 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 10:28:08,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-21 10:28:09,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-21 10:28:09,125 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 384 with TraceHistMax 54,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 188 known predicates. [2023-12-21 10:28:09,129 INFO L445 BasicCegarLoop]: Path program histogram: [34, 1, 1, 1] [2023-12-21 10:28:09,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 10:28:09,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 10:28:09 BoogieIcfgContainer [2023-12-21 10:28:09,131 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 10:28:09,132 INFO L158 Benchmark]: Toolchain (without parser) took 838689.72ms. Allocated memory was 343.9MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 290.9MB in the beginning and 901.3MB in the end (delta: -610.3MB). Peak memory consumption was 466.0MB. Max. memory is 8.0GB. [2023-12-21 10:28:09,146 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 200.3MB. Free memory was 150.0MB in the beginning and 149.8MB in the end (delta: 140.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 10:28:09,146 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.13ms. Allocated memory is still 343.9MB. Free memory was 290.9MB in the beginning and 279.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 10:28:09,146 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.86ms. Allocated memory is still 343.9MB. Free memory was 279.9MB in the beginning and 278.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 10:28:09,146 INFO L158 Benchmark]: Boogie Preprocessor took 19.47ms. Allocated memory is still 343.9MB. Free memory was 278.4MB in the beginning and 276.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 10:28:09,146 INFO L158 Benchmark]: RCFGBuilder took 210.92ms. Allocated memory is still 343.9MB. Free memory was 276.8MB in the beginning and 264.7MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 10:28:09,146 INFO L158 Benchmark]: TraceAbstraction took 838251.57ms. Allocated memory was 343.9MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 264.2MB in the beginning and 901.3MB in the end (delta: -637.1MB). Peak memory consumption was 438.8MB. Max. memory is 8.0GB. [2023-12-21 10:28:09,147 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 200.3MB. Free memory was 150.0MB in the beginning and 149.8MB in the end (delta: 140.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.13ms. Allocated memory is still 343.9MB. Free memory was 290.9MB in the beginning and 279.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.86ms. Allocated memory is still 343.9MB. Free memory was 279.9MB in the beginning and 278.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.47ms. Allocated memory is still 343.9MB. Free memory was 278.4MB in the beginning and 276.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 210.92ms. Allocated memory is still 343.9MB. Free memory was 276.8MB in the beginning and 264.7MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 838251.57ms. Allocated memory was 343.9MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 264.2MB in the beginning and 901.3MB in the end (delta: -637.1MB). Peak memory consumption was 438.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 39). Cancelled while NwaCegarLoop was analyzing trace of length 384 with TraceHistMax 54,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 188 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 838.2s, OverallIterations: 37, TraceHistogramMax: 54, PathProgramHistogramMax: 34, EmptinessCheckTime: 0.1s, AutomataDifference: 174.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11540 SdHoareTripleChecker+Valid, 100.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10930 mSDsluCounter, 62384 SdHoareTripleChecker+Invalid, 87.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61442 mSDsCounter, 4985 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 283590 IncrementalHoareTripleChecker+Invalid, 288575 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4985 mSolverCounterUnsat, 942 mSDtfsCounter, 283590 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16139 GetRequests, 9839 SyntacticMatches, 5 SemanticMatches, 6295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323035 ImplicationChecksByTransitivity, 317.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=36, InterpolantAutomatonStates: 1933, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 36 MinimizatonAttempts, 350 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 605.0s InterpolantComputationTime, 11245 NumberOfCodeBlocks, 11245 NumberOfCodeBlocksAsserted, 518 NumberOfCheckSat, 16741 ConstructedInterpolants, 0 QuantifiedInterpolants, 149755 SizeOfPredicates, 1534 NumberOfNonLiveVariables, 16068 ConjunctsInSsa, 9208 ConjunctsInUnsatCore, 104 InterpolantComputations, 2 PerfectInterpolantSequences, 103452/242276 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown