/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-simple/id_i25_o25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 10:29:32,645 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 10:29:32,727 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 10:29:32,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 10:29:32,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 10:29:32,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 10:29:32,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 10:29:32,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 10:29:32,769 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 10:29:32,772 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 10:29:32,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 10:29:32,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 10:29:32,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 10:29:32,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 10:29:32,775 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 10:29:32,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 10:29:32,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 10:29:32,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 10:29:32,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 10:29:32,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 10:29:32,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 10:29:32,777 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 10:29:32,777 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 10:29:32,777 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 10:29:32,777 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 10:29:32,777 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 10:29:32,778 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 10:29:32,778 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 10:29:32,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 10:29:32,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 10:29:32,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 10:29:32,780 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 10:29:32,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:29:32,780 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 10:29:32,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 10:29:32,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 10:29:32,781 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 10:29:32,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 10:29:32,781 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 10:29:32,781 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 10:29:32,781 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 10:29:32,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 10:29:32,782 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 10:29:32,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 10:29:32,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 10:29:33,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 10:29:33,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 10:29:33,012 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 10:29:33,013 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 10:29:33,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2023-12-21 10:29:34,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 10:29:34,383 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 10:29:34,384 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2023-12-21 10:29:34,388 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce9658009/f23334d071e148ba9b8ad4a475af01c2/FLAG9798b500b [2023-12-21 10:29:34,399 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce9658009/f23334d071e148ba9b8ad4a475af01c2 [2023-12-21 10:29:34,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 10:29:34,401 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 10:29:34,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 10:29:34,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 10:29:34,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 10:29:34,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a30dfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34, skipping insertion in model container [2023-12-21 10:29:34,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,423 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 10:29:34,534 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-simple/id_i25_o25-1.c[454,467] [2023-12-21 10:29:34,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:29:34,546 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 10:29:34,567 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-simple/id_i25_o25-1.c[454,467] [2023-12-21 10:29:34,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:29:34,584 INFO L206 MainTranslator]: Completed translation [2023-12-21 10:29:34,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34 WrapperNode [2023-12-21 10:29:34,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 10:29:34,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 10:29:34,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 10:29:34,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 10:29:34,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,622 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-12-21 10:29:34,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 10:29:34,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 10:29:34,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 10:29:34,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 10:29:34,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,645 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 10:29:34,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,654 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,656 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 10:29:34,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 10:29:34,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 10:29:34,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 10:29:34,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (1/1) ... [2023-12-21 10:29:34,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:29:34,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:34,698 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 10:29:34,722 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 10:29:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 10:29:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 10:29:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 10:29:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 10:29:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-12-21 10:29:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-12-21 10:29:34,787 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 10:29:34,789 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 10:29:34,922 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 10:29:34,938 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 10:29:34,938 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 10:29:34,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:29:34 BoogieIcfgContainer [2023-12-21 10:29:34,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 10:29:34,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 10:29:34,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 10:29:34,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 10:29:34,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:29:34" (1/3) ... [2023-12-21 10:29:34,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f985e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:29:34, skipping insertion in model container [2023-12-21 10:29:34,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:29:34" (2/3) ... [2023-12-21 10:29:34,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f985e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:29:34, skipping insertion in model container [2023-12-21 10:29:34,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:29:34" (3/3) ... [2023-12-21 10:29:34,956 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i25_o25-1.c [2023-12-21 10:29:34,971 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 10:29:34,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 10:29:35,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 10:29:35,030 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;@35bc4b84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 10:29:35,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 10:29:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 10:29:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 10:29:35,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:35,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:35,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:35,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1493244868, now seen corresponding path program 1 times [2023-12-21 10:29:35,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:35,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820000828] [2023-12-21 10:29:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:35,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:35,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:29:35,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:35,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820000828] [2023-12-21 10:29:35,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820000828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:29:35,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:29:35,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 10:29:35,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740503653] [2023-12-21 10:29:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:29:35,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:29:35,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:29:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:29:35,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 10:29:35,438 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:29:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:29:35,514 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-12-21 10:29:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:29:35,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-21 10:29:35,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:29:35,524 INFO L225 Difference]: With dead ends: 22 [2023-12-21 10:29:35,524 INFO L226 Difference]: Without dead ends: 14 [2023-12-21 10:29:35,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 10:29:35,531 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:29:35,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:29:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-21 10:29:35,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-21 10:29:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 10:29:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-12-21 10:29:35,566 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2023-12-21 10:29:35,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:29:35,567 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-12-21 10:29:35,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:29:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-21 10:29:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 10:29:35,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:35,569 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 10:29:35,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:35,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -642736818, now seen corresponding path program 1 times [2023-12-21 10:29:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:35,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861516288] [2023-12-21 10:29:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:35,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:35,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 10:29:35,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:35,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861516288] [2023-12-21 10:29:35,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861516288] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:29:35,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77353772] [2023-12-21 10:29:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:35,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:35,769 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 10:29:35,794 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 10:29:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:35,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 10:29:35,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:29:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 10:29:35,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:29:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 10:29:36,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77353772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:29:36,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:29:36,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2023-12-21 10:29:36,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65186120] [2023-12-21 10:29:36,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:29:36,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 10:29:36,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:29:36,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 10:29:36,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-21 10:29:36,068 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 10:29:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:29:36,112 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2023-12-21 10:29:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 10:29:36,113 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 15 [2023-12-21 10:29:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:29:36,114 INFO L225 Difference]: With dead ends: 21 [2023-12-21 10:29:36,114 INFO L226 Difference]: Without dead ends: 17 [2023-12-21 10:29:36,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:29:36,116 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:29:36,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 32 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:29:36,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-21 10:29:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-21 10:29:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 10:29:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-12-21 10:29:36,121 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2023-12-21 10:29:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:29:36,121 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-12-21 10:29:36,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 10:29:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-12-21 10:29:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 10:29:36,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:36,122 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:36,132 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 10:29:36,328 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 10:29:36,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:36,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2123675004, now seen corresponding path program 2 times [2023-12-21 10:29:36,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:36,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722279882] [2023-12-21 10:29:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:36,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:36,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 10:29:36,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:36,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722279882] [2023-12-21 10:29:36,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722279882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:29:36,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230809763] [2023-12-21 10:29:36,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:29:36,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:36,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:36,559 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 10:29:36,585 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 10:29:36,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:29:36,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:29:36,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 10:29:36,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:29:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 10:29:36,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:29:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 10:29:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230809763] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:29:37,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:29:37,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 14 [2023-12-21 10:29:37,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923288946] [2023-12-21 10:29:37,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:29:37,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 10:29:37,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:29:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 10:29:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:29:37,020 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 14 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-21 10:29:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:29:37,076 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-12-21 10:29:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:29:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 21 [2023-12-21 10:29:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:29:37,077 INFO L225 Difference]: With dead ends: 24 [2023-12-21 10:29:37,077 INFO L226 Difference]: Without dead ends: 20 [2023-12-21 10:29:37,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-12-21 10:29:37,079 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:29:37,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 36 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:29:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-21 10:29:37,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-21 10:29:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 10:29:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-12-21 10:29:37,083 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 21 [2023-12-21 10:29:37,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:29:37,084 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-12-21 10:29:37,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-21 10:29:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-12-21 10:29:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 10:29:37,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:37,085 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:37,093 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 10:29:37,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-21 10:29:37,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:37,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash 54189198, now seen corresponding path program 3 times [2023-12-21 10:29:37,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:37,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938798734] [2023-12-21 10:29:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:37,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:37,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 10:29:37,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:37,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938798734] [2023-12-21 10:29:37,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938798734] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:29:37,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534550323] [2023-12-21 10:29:37,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:29:37,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:37,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:37,542 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 10:29:37,561 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 10:29:37,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 10:29:37,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:29:37,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 10:29:37,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:29:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 10:29:37,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:29:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 10:29:38,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534550323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:29:38,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:29:38,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 16 [2023-12-21 10:29:38,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313082879] [2023-12-21 10:29:38,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:29:38,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 10:29:38,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:29:38,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 10:29:38,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-12-21 10:29:38,088 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-21 10:29:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:29:38,155 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-12-21 10:29:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 10:29:38,160 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) Word has length 27 [2023-12-21 10:29:38,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:29:38,161 INFO L225 Difference]: With dead ends: 27 [2023-12-21 10:29:38,161 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 10:29:38,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2023-12-21 10:29:38,165 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:29:38,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 41 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:29:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 10:29:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 10:29:38,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 10:29:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-12-21 10:29:38,178 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 27 [2023-12-21 10:29:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:29:38,178 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-12-21 10:29:38,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-21 10:29:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-12-21 10:29:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 10:29:38,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:38,181 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:38,190 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 10:29:38,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:38,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:38,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1269749436, now seen corresponding path program 4 times [2023-12-21 10:29:38,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:38,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468984418] [2023-12-21 10:29:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:38,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:38,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:38,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:38,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:38,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 10:29:38,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:38,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468984418] [2023-12-21 10:29:38,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468984418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:29:38,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286356361] [2023-12-21 10:29:38,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:29:38,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:38,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:38,641 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 10:29:38,665 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 10:29:38,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:29:38,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:29:38,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 10:29:38,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:29:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 10:29:38,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:29:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 10:29:39,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286356361] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:29:39,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:29:39,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 18 [2023-12-21 10:29:39,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444965193] [2023-12-21 10:29:39,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:29:39,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 10:29:39,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:29:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 10:29:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-21 10:29:39,414 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 18 states, 16 states have (on average 2.0) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-21 10:29:39,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:29:39,494 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-12-21 10:29:39,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:29:39,495 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) Word has length 33 [2023-12-21 10:29:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:29:39,496 INFO L225 Difference]: With dead ends: 30 [2023-12-21 10:29:39,496 INFO L226 Difference]: Without dead ends: 26 [2023-12-21 10:29:39,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-12-21 10:29:39,498 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 45 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:29:39,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 46 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:29:39,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-21 10:29:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-21 10:29:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 10:29:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-12-21 10:29:39,507 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 33 [2023-12-21 10:29:39,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:29:39,507 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-12-21 10:29:39,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-21 10:29:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-12-21 10:29:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 10:29:39,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:39,509 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:39,519 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 10:29:39,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:39,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:39,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:39,716 INFO L85 PathProgramCache]: Analyzing trace with hash -4035634, now seen corresponding path program 5 times [2023-12-21 10:29:39,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:39,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774559645] [2023-12-21 10:29:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:39,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:39,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:39,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:39,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:39,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:39,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 10:29:39,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774559645] [2023-12-21 10:29:39,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774559645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:29:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858577937] [2023-12-21 10:29:39,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:29:39,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:39,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:39,983 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 10:29:40,000 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 10:29:40,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-21 10:29:40,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:29:40,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 10:29:40,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:29:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-21 10:29:40,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:29:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 10:29:41,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858577937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:29:41,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:29:41,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 20 [2023-12-21 10:29:41,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473675608] [2023-12-21 10:29:41,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:29:41,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 10:29:41,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:29:41,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 10:29:41,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-21 10:29:41,163 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 20 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2023-12-21 10:29:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:29:41,235 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2023-12-21 10:29:41,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 10:29:41,236 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) Word has length 39 [2023-12-21 10:29:41,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:29:41,237 INFO L225 Difference]: With dead ends: 33 [2023-12-21 10:29:41,237 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 10:29:41,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2023-12-21 10:29:41,238 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:29:41,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 49 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:29:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 10:29:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 10:29:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 10:29:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2023-12-21 10:29:41,242 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 39 [2023-12-21 10:29:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:29:41,242 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2023-12-21 10:29:41,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2023-12-21 10:29:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2023-12-21 10:29:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 10:29:41,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:41,244 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:41,252 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 10:29:41,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:41,450 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:41,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1047611388, now seen corresponding path program 6 times [2023-12-21 10:29:41,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:41,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730786606] [2023-12-21 10:29:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:41,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:41,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:41,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:41,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:41,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:41,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-21 10:29:41,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:41,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730786606] [2023-12-21 10:29:41,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730786606] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:29:41,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934495120] [2023-12-21 10:29:41,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:29:41,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:41,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:41,750 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 10:29:41,770 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 10:29:41,818 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-21 10:29:41,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:29:41,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 10:29:41,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:29:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 10:29:41,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:29:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 10:29:43,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934495120] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:29:43,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:29:43,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 17] total 22 [2023-12-21 10:29:43,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196115659] [2023-12-21 10:29:43,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:29:43,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 10:29:43,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:29:43,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 10:29:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2023-12-21 10:29:43,298 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 22 states, 20 states have (on average 2.0) internal successors, (40), 21 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-21 10:29:43,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:29:43,385 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2023-12-21 10:29:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 10:29:43,386 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 21 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) Word has length 45 [2023-12-21 10:29:43,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:29:43,387 INFO L225 Difference]: With dead ends: 36 [2023-12-21 10:29:43,387 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 10:29:43,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2023-12-21 10:29:43,388 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 53 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:29:43,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 54 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:29:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 10:29:43,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-21 10:29:43,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-21 10:29:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2023-12-21 10:29:43,392 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 45 [2023-12-21 10:29:43,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:29:43,393 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2023-12-21 10:29:43,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 21 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-21 10:29:43,393 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-12-21 10:29:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 10:29:43,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:43,394 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:43,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 10:29:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:43,600 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:43,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1466649358, now seen corresponding path program 7 times [2023-12-21 10:29:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:43,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332140976] [2023-12-21 10:29:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:43,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:43,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:43,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:43,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-21 10:29:43,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:43,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332140976] [2023-12-21 10:29:43,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332140976] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:29:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894968858] [2023-12-21 10:29:43,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:29:43,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:43,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:43,945 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 10:29:43,966 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 10:29:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:44,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 10:29:44,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:29:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-21 10:29:44,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:29:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:29:46,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894968858] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:29:46,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:29:46,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 24 [2023-12-21 10:29:46,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739459560] [2023-12-21 10:29:46,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:29:46,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 10:29:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:29:46,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 10:29:46,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2023-12-21 10:29:46,054 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 24 states, 22 states have (on average 2.0) internal successors, (44), 23 states have internal predecessors, (44), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2023-12-21 10:29:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:29:46,172 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2023-12-21 10:29:46,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 10:29:46,173 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 23 states have internal predecessors, (44), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) Word has length 51 [2023-12-21 10:29:46,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:29:46,175 INFO L225 Difference]: With dead ends: 39 [2023-12-21 10:29:46,177 INFO L226 Difference]: Without dead ends: 35 [2023-12-21 10:29:46,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 96 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=322, Invalid=670, Unknown=0, NotChecked=0, Total=992 [2023-12-21 10:29:46,179 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 70 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:29:46,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 52 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:29:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-21 10:29:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-21 10:29:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:29:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2023-12-21 10:29:46,190 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 51 [2023-12-21 10:29:46,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:29:46,190 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2023-12-21 10:29:46,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0) internal successors, (44), 23 states have internal predecessors, (44), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2023-12-21 10:29:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2023-12-21 10:29:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 10:29:46,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:46,194 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:46,202 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 10:29:46,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:46,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:46,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:46,400 INFO L85 PathProgramCache]: Analyzing trace with hash 335541956, now seen corresponding path program 8 times [2023-12-21 10:29:46,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:46,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415317459] [2023-12-21 10:29:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:46,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:46,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:46,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:46,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:46,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 10:29:46,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:46,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415317459] [2023-12-21 10:29:46,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415317459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:29:46,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946356522] [2023-12-21 10:29:46,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:29:46,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:46,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:46,804 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 10:29:46,807 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 10:29:46,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:29:46,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:29:46,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 10:29:46,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:29:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-21 10:29:47,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:29:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 10:29:50,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946356522] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:29:50,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:29:50,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 21] total 26 [2023-12-21 10:29:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770541515] [2023-12-21 10:29:50,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:29:50,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 10:29:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:29:50,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 10:29:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2023-12-21 10:29:50,487 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 26 states, 24 states have (on average 2.0) internal successors, (48), 25 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2023-12-21 10:29:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:29:50,605 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2023-12-21 10:29:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 10:29:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 25 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) Word has length 57 [2023-12-21 10:29:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:29:50,607 INFO L225 Difference]: With dead ends: 42 [2023-12-21 10:29:50,608 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 10:29:50,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 108 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=387, Invalid=803, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 10:29:50,609 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 61 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:29:50,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 67 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:29:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 10:29:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-21 10:29:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 10:29:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2023-12-21 10:29:50,613 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 57 [2023-12-21 10:29:50,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:29:50,613 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2023-12-21 10:29:50,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 25 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2023-12-21 10:29:50,613 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2023-12-21 10:29:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 10:29:50,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:50,614 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:50,622 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 10:29:50,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-21 10:29:50,821 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:50,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash -682001842, now seen corresponding path program 9 times [2023-12-21 10:29:50,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:50,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424910273] [2023-12-21 10:29:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:50,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:51,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:51,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:51,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-21 10:29:51,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:51,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424910273] [2023-12-21 10:29:51,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424910273] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:29:51,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044145237] [2023-12-21 10:29:51,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:29:51,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:51,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:51,304 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 10:29:51,308 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 10:29:51,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-21 10:29:51,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:29:51,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 10:29:51,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:29:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-21 10:29:51,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:29:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 10:29:54,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044145237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:29:54,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:29:54,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 28 [2023-12-21 10:29:54,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953253238] [2023-12-21 10:29:54,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:29:54,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 10:29:54,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:29:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 10:29:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2023-12-21 10:29:54,936 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 28 states, 26 states have (on average 2.0) internal successors, (52), 27 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) [2023-12-21 10:29:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:29:55,066 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2023-12-21 10:29:55,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 10:29:55,067 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.0) internal successors, (52), 27 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) Word has length 63 [2023-12-21 10:29:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:29:55,067 INFO L225 Difference]: With dead ends: 45 [2023-12-21 10:29:55,067 INFO L226 Difference]: Without dead ends: 41 [2023-12-21 10:29:55,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 120 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=458, Invalid=948, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 10:29:55,068 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 81 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:29:55,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 69 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:29:55,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-21 10:29:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-21 10:29:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:29:55,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2023-12-21 10:29:55,073 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 63 [2023-12-21 10:29:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:29:55,073 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2023-12-21 10:29:55,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.0) internal successors, (52), 27 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) [2023-12-21 10:29:55,073 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2023-12-21 10:29:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 10:29:55,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:29:55,074 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:29:55,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 10:29:55,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 10:29:55,276 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:29:55,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:29:55,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1904272772, now seen corresponding path program 10 times [2023-12-21 10:29:55,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:29:55,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147221308] [2023-12-21 10:29:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:29:55,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:29:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:29:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:29:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:29:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-21 10:29:55,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:29:55,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147221308] [2023-12-21 10:29:55,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147221308] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:29:55,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611598769] [2023-12-21 10:29:55,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:29:55,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:29:55,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:29:55,841 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 10:29:55,860 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 10:29:56,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:29:56,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:29:56,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 10:29:56,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:29:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-12-21 10:29:56,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:30:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 10:30:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611598769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:30:01,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:30:01,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 25] total 30 [2023-12-21 10:30:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380303046] [2023-12-21 10:30:01,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:30:01,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 10:30:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:30:01,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 10:30:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2023-12-21 10:30:01,053 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 30 states, 28 states have (on average 2.0) internal successors, (56), 29 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) [2023-12-21 10:30:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:30:01,219 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2023-12-21 10:30:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 10:30:01,219 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.0) internal successors, (56), 29 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) Word has length 69 [2023-12-21 10:30:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:30:01,230 INFO L225 Difference]: With dead ends: 48 [2023-12-21 10:30:01,230 INFO L226 Difference]: Without dead ends: 44 [2023-12-21 10:30:01,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 132 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=535, Invalid=1105, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 10:30:01,231 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 30 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:30:01,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 78 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:30:01,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-21 10:30:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-21 10:30:01,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 30 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 10:30:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2023-12-21 10:30:01,245 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 69 [2023-12-21 10:30:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:30:01,246 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2023-12-21 10:30:01,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.0) internal successors, (56), 29 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) [2023-12-21 10:30:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2023-12-21 10:30:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 10:30:01,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:30:01,247 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:30:01,263 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 10:30:01,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 10:30:01,459 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:30:01,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:30:01,459 INFO L85 PathProgramCache]: Analyzing trace with hash -776930930, now seen corresponding path program 11 times [2023-12-21 10:30:01,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:30:01,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129042711] [2023-12-21 10:30:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:30:01,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:30:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:30:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:01,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:02,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:02,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:02,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-21 10:30:02,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:30:02,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129042711] [2023-12-21 10:30:02,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129042711] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:30:02,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030711380] [2023-12-21 10:30:02,085 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:30:02,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:30:02,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:30:02,086 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 10:30:02,103 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 10:30:02,401 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-21 10:30:02,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:30:02,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 10:30:02,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:30:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-12-21 10:30:02,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:30:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 10:30:08,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030711380] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:30:08,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:30:08,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 27] total 32 [2023-12-21 10:30:08,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7670492] [2023-12-21 10:30:08,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:30:08,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 10:30:08,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:30:08,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 10:30:08,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2023-12-21 10:30:08,532 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 32 states, 30 states have (on average 2.0) internal successors, (60), 31 states have internal predecessors, (60), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) [2023-12-21 10:30:08,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:30:08,698 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2023-12-21 10:30:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 10:30:08,698 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.0) internal successors, (60), 31 states have internal predecessors, (60), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) Word has length 75 [2023-12-21 10:30:08,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:30:08,699 INFO L225 Difference]: With dead ends: 51 [2023-12-21 10:30:08,699 INFO L226 Difference]: Without dead ends: 47 [2023-12-21 10:30:08,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 144 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=618, Invalid=1274, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 10:30:08,703 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 114 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:30:08,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 80 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:30:08,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-21 10:30:08,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-21 10:30:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 10:30:08,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2023-12-21 10:30:08,712 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 75 [2023-12-21 10:30:08,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:30:08,712 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2023-12-21 10:30:08,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.0) internal successors, (60), 31 states have internal predecessors, (60), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) [2023-12-21 10:30:08,713 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2023-12-21 10:30:08,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 10:30:08,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:30:08,717 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:30:08,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 10:30:08,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 10:30:08,924 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:30:08,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:30:08,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1158839228, now seen corresponding path program 12 times [2023-12-21 10:30:08,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:30:08,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096212872] [2023-12-21 10:30:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:30:08,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:30:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:30:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-21 10:30:09,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:30:09,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096212872] [2023-12-21 10:30:09,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096212872] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:30:09,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45057708] [2023-12-21 10:30:09,577 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:30:09,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:30:09,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:30:09,579 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 10:30:09,614 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 10:30:09,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-21 10:30:09,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:30:09,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 10:30:09,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:30:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-12-21 10:30:10,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:30:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 10:30:17,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45057708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:30:17,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:30:17,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 29] total 34 [2023-12-21 10:30:17,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581506481] [2023-12-21 10:30:17,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:30:17,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 10:30:17,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:30:17,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 10:30:17,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 10:30:17,606 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 34 states, 32 states have (on average 2.0) internal successors, (64), 33 states have internal predecessors, (64), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-21 10:30:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:30:17,804 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2023-12-21 10:30:17,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 10:30:17,804 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.0) internal successors, (64), 33 states have internal predecessors, (64), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) Word has length 81 [2023-12-21 10:30:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:30:17,805 INFO L225 Difference]: With dead ends: 54 [2023-12-21 10:30:17,805 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 10:30:17,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 156 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=707, Invalid=1455, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 10:30:17,808 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 215 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:30:17,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 89 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:30:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 10:30:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-21 10:30:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-21 10:30:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2023-12-21 10:30:17,825 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 81 [2023-12-21 10:30:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:30:17,825 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2023-12-21 10:30:17,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.0) internal successors, (64), 33 states have internal predecessors, (64), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-21 10:30:17,825 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2023-12-21 10:30:17,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 10:30:17,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:30:17,826 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:30:17,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-21 10:30:18,026 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,SelfDestructingSolverStorable12 [2023-12-21 10:30:18,026 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:30:18,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:30:18,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1570097358, now seen corresponding path program 13 times [2023-12-21 10:30:18,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:30:18,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018787849] [2023-12-21 10:30:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:30:18,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:30:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:30:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-12-21 10:30:18,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:30:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018787849] [2023-12-21 10:30:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018787849] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:30:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403113173] [2023-12-21 10:30:18,770 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:30:18,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:30:18,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:30:18,772 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 10:30:18,792 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 10:30:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:19,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 10:30:19,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:30:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-21 10:30:19,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:30:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-21 10:30:29,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403113173] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:30:29,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:30:29,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 36 [2023-12-21 10:30:29,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895900084] [2023-12-21 10:30:29,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:30:29,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-21 10:30:29,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:30:29,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-21 10:30:29,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=921, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 10:30:29,025 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 36 states, 34 states have (on average 2.0) internal successors, (68), 35 states have internal predecessors, (68), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) [2023-12-21 10:30:29,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:30:29,222 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2023-12-21 10:30:29,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 10:30:29,222 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.0) internal successors, (68), 35 states have internal predecessors, (68), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) Word has length 87 [2023-12-21 10:30:29,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:30:29,223 INFO L225 Difference]: With dead ends: 57 [2023-12-21 10:30:29,223 INFO L226 Difference]: Without dead ends: 53 [2023-12-21 10:30:29,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 168 SyntacticMatches, 14 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=802, Invalid=1648, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 10:30:29,225 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 120 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:30:29,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 93 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:30:29,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-21 10:30:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-21 10:30:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (16), 15 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-21 10:30:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2023-12-21 10:30:29,232 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 87 [2023-12-21 10:30:29,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:30:29,234 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2023-12-21 10:30:29,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.0) internal successors, (68), 35 states have internal predecessors, (68), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) [2023-12-21 10:30:29,234 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2023-12-21 10:30:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 10:30:29,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:30:29,236 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:30:29,244 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 10:30:29,444 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,SelfDestructingSolverStorable13 [2023-12-21 10:30:29,444 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:30:29,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:30:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1407069436, now seen corresponding path program 14 times [2023-12-21 10:30:29,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:30:29,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189250089] [2023-12-21 10:30:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:30:29,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:30:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:30:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:29,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:29,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:30,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:30,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:30,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:30,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-12-21 10:30:30,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:30:30,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189250089] [2023-12-21 10:30:30,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189250089] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:30:30,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270116081] [2023-12-21 10:30:30,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:30:30,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:30:30,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:30:30,260 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 10:30:30,271 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 10:30:30,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:30:30,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:30:30,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 10:30:30,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:30:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-12-21 10:30:30,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:30:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-21 10:30:42,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270116081] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:30:42,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:30:42,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 33] total 38 [2023-12-21 10:30:42,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143989345] [2023-12-21 10:30:42,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:30:42,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 10:30:42,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:30:42,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 10:30:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1029, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 10:30:42,698 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 38 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) [2023-12-21 10:30:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:30:42,913 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2023-12-21 10:30:42,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 10:30:42,914 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) Word has length 93 [2023-12-21 10:30:42,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:30:42,914 INFO L225 Difference]: With dead ends: 60 [2023-12-21 10:30:42,914 INFO L226 Difference]: Without dead ends: 56 [2023-12-21 10:30:42,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 180 SyntacticMatches, 15 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=903, Invalid=1853, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 10:30:42,916 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 153 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:30:42,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 99 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:30:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-21 10:30:42,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-21 10:30:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.027027027027027) internal successors, (38), 38 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 10:30:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2023-12-21 10:30:42,919 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 93 [2023-12-21 10:30:42,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:30:42,919 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2023-12-21 10:30:42,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) [2023-12-21 10:30:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2023-12-21 10:30:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 10:30:42,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:30:42,921 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:30:42,935 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 10:30:43,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:30:43,135 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:30:43,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:30:43,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1758730226, now seen corresponding path program 15 times [2023-12-21 10:30:43,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:30:43,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094530850] [2023-12-21 10:30:43,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:30:43,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:30:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:30:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:30:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:30:44,057 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-12-21 10:30:44,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:30:44,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094530850] [2023-12-21 10:30:44,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094530850] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:30:44,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522511055] [2023-12-21 10:30:44,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:30:44,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:30:44,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:30:44,060 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 10:30:44,085 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 10:30:44,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-21 10:30:44,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:30:44,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 10:30:44,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:30:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-12-21 10:30:44,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:30:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-21 10:30:59,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522511055] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:30:59,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:30:59,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 35] total 40 [2023-12-21 10:30:59,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504680187] [2023-12-21 10:30:59,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:30:59,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 10:30:59,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:30:59,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 10:30:59,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 10:30:59,799 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 40 states, 38 states have (on average 2.0) internal successors, (76), 39 states have internal predecessors, (76), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) [2023-12-21 10:31:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:31:00,014 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2023-12-21 10:31:00,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 10:31:00,015 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.0) internal successors, (76), 39 states have internal predecessors, (76), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) Word has length 99 [2023-12-21 10:31:00,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:31:00,016 INFO L225 Difference]: With dead ends: 63 [2023-12-21 10:31:00,016 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 10:31:00,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 192 SyntacticMatches, 16 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1010, Invalid=2070, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 10:31:00,017 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 73 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:31:00,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 99 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:31:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 10:31:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-21 10:31:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 40 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (18), 17 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 10:31:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2023-12-21 10:31:00,021 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 99 [2023-12-21 10:31:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:31:00,021 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2023-12-21 10:31:00,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.0) internal successors, (76), 39 states have internal predecessors, (76), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) [2023-12-21 10:31:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2023-12-21 10:31:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 10:31:00,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:31:00,022 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:31:00,036 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 10:31:00,232 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,SelfDestructingSolverStorable15 [2023-12-21 10:31:00,232 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:31:00,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:31:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1678126652, now seen corresponding path program 16 times [2023-12-21 10:31:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:31:00,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992275103] [2023-12-21 10:31:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:31:00,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:31:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:31:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:00,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:00,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:01,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:01,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:01,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-12-21 10:31:01,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:31:01,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992275103] [2023-12-21 10:31:01,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992275103] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:31:01,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751194313] [2023-12-21 10:31:01,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:31:01,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:31:01,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:31:01,296 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 10:31:01,300 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 10:31:02,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:31:02,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:31:02,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 10:31:02,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:31:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-12-21 10:31:02,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:31:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-21 10:31:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751194313] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:31:20,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:31:20,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 37] total 42 [2023-12-21 10:31:20,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591181992] [2023-12-21 10:31:20,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:31:20,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 10:31:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:31:20,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 10:31:20,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 10:31:20,666 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 42 states, 40 states have (on average 2.0) internal successors, (80), 41 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (50), 17 states have call predecessors, (50), 20 states have call successors, (50) [2023-12-21 10:31:20,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:31:20,873 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2023-12-21 10:31:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 10:31:20,873 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.0) internal successors, (80), 41 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (50), 17 states have call predecessors, (50), 20 states have call successors, (50) Word has length 105 [2023-12-21 10:31:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:31:20,874 INFO L225 Difference]: With dead ends: 66 [2023-12-21 10:31:20,874 INFO L226 Difference]: Without dead ends: 62 [2023-12-21 10:31:20,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 204 SyntacticMatches, 17 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1397 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1123, Invalid=2299, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 10:31:20,875 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 129 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:31:20,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 103 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:31:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-21 10:31:20,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-21 10:31:20,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.024390243902439) internal successors, (42), 42 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (19), 18 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 10:31:20,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2023-12-21 10:31:20,879 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 105 [2023-12-21 10:31:20,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:31:20,879 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2023-12-21 10:31:20,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.0) internal successors, (80), 41 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (50), 17 states have call predecessors, (50), 20 states have call successors, (50) [2023-12-21 10:31:20,879 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2023-12-21 10:31:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 10:31:20,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:31:20,880 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:31:20,894 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 10:31:21,090 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,SelfDestructingSolverStorable16 [2023-12-21 10:31:21,090 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:31:21,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:31:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash -543729842, now seen corresponding path program 17 times [2023-12-21 10:31:21,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:31:21,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959798228] [2023-12-21 10:31:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:31:21,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:31:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:31:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:21,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:22,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:22,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:22,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:22,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2023-12-21 10:31:22,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:31:22,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959798228] [2023-12-21 10:31:22,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959798228] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:31:22,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167428104] [2023-12-21 10:31:22,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:31:22,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:31:22,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:31:22,267 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 10:31:22,269 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 10:31:23,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-21 10:31:23,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:31:23,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 10:31:23,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:31:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-21 10:31:23,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:31:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-21 10:31:45,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167428104] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:31:45,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:31:45,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 39] total 44 [2023-12-21 10:31:45,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536290353] [2023-12-21 10:31:45,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:31:45,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 10:31:45,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:31:45,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 10:31:45,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=1389, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 10:31:45,829 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 44 states, 42 states have (on average 2.0) internal successors, (84), 43 states have internal predecessors, (84), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (53), 18 states have call predecessors, (53), 21 states have call successors, (53) [2023-12-21 10:31:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:31:46,059 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2023-12-21 10:31:46,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 10:31:46,059 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 2.0) internal successors, (84), 43 states have internal predecessors, (84), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (53), 18 states have call predecessors, (53), 21 states have call successors, (53) Word has length 111 [2023-12-21 10:31:46,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:31:46,060 INFO L225 Difference]: With dead ends: 69 [2023-12-21 10:31:46,060 INFO L226 Difference]: Without dead ends: 65 [2023-12-21 10:31:46,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 216 SyntacticMatches, 18 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1242, Invalid=2540, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 10:31:46,061 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 52 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:31:46,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 110 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:31:46,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-21 10:31:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-12-21 10:31:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 44 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (20), 19 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 10:31:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2023-12-21 10:31:46,064 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 111 [2023-12-21 10:31:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:31:46,065 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2023-12-21 10:31:46,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 2.0) internal successors, (84), 43 states have internal predecessors, (84), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (53), 18 states have call predecessors, (53), 21 states have call successors, (53) [2023-12-21 10:31:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2023-12-21 10:31:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 10:31:46,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:31:46,066 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:31:46,077 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 10:31:46,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 10:31:46,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:31:46,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:31:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1011974276, now seen corresponding path program 18 times [2023-12-21 10:31:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:31:46,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569638024] [2023-12-21 10:31:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:31:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:31:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:46,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:31:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:46,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:46,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:46,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:46,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:31:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:31:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2023-12-21 10:31:47,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:31:47,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569638024] [2023-12-21 10:31:47,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569638024] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:31:47,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615703246] [2023-12-21 10:31:47,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:31:47,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:31:47,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:31:47,423 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 10:31:47,425 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 10:31:48,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-21 10:31:48,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:31:48,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 10:31:48,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:31:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-12-21 10:31:48,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:32:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 819 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-21 10:32:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615703246] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:32:15,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:32:15,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 41] total 46 [2023-12-21 10:32:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721024493] [2023-12-21 10:32:15,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:32:15,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 10:32:15,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:32:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 10:32:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 10:32:15,306 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 46 states, 44 states have (on average 2.0) internal successors, (88), 45 states have internal predecessors, (88), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (56), 19 states have call predecessors, (56), 22 states have call successors, (56) [2023-12-21 10:32:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:32:15,550 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2023-12-21 10:32:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 10:32:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 2.0) internal successors, (88), 45 states have internal predecessors, (88), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (56), 19 states have call predecessors, (56), 22 states have call successors, (56) Word has length 117 [2023-12-21 10:32:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:32:15,552 INFO L225 Difference]: With dead ends: 72 [2023-12-21 10:32:15,552 INFO L226 Difference]: Without dead ends: 68 [2023-12-21 10:32:15,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 228 SyntacticMatches, 19 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1367, Invalid=2793, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 10:32:15,554 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 150 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:32:15,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 119 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:32:15,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-21 10:32:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-21 10:32:15,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 46 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (21), 20 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 10:32:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2023-12-21 10:32:15,558 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 117 [2023-12-21 10:32:15,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:32:15,558 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2023-12-21 10:32:15,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 2.0) internal successors, (88), 45 states have internal predecessors, (88), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (56), 19 states have call predecessors, (56), 22 states have call successors, (56) [2023-12-21 10:32:15,559 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2023-12-21 10:32:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 10:32:15,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:32:15,560 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:32:15,572 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 10:32:15,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:32:15,761 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:32:15,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:32:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash 486282894, now seen corresponding path program 19 times [2023-12-21 10:32:15,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:32:15,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881783499] [2023-12-21 10:32:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:32:15,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:32:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:32:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-12-21 10:32:16,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:32:16,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881783499] [2023-12-21 10:32:16,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881783499] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:32:16,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137420953] [2023-12-21 10:32:16,976 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:32:16,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:32:16,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:32:16,977 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 10:32:16,981 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 10:32:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:18,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 10:32:18,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:32:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2023-12-21 10:32:18,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:32:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-21 10:32:50,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137420953] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:32:50,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:32:50,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 43] total 48 [2023-12-21 10:32:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815926261] [2023-12-21 10:32:50,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:32:50,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 10:32:50,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:32:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 10:32:50,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=1659, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 10:32:50,229 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 48 states, 46 states have (on average 2.0) internal successors, (92), 47 states have internal predecessors, (92), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (59), 20 states have call predecessors, (59), 23 states have call successors, (59) [2023-12-21 10:32:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:32:50,525 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2023-12-21 10:32:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 10:32:50,526 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 2.0) internal successors, (92), 47 states have internal predecessors, (92), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (59), 20 states have call predecessors, (59), 23 states have call successors, (59) Word has length 123 [2023-12-21 10:32:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:32:50,527 INFO L225 Difference]: With dead ends: 75 [2023-12-21 10:32:50,527 INFO L226 Difference]: Without dead ends: 71 [2023-12-21 10:32:50,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 240 SyntacticMatches, 20 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1498, Invalid=3058, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 10:32:50,528 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 357 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:32:50,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 127 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:32:50,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-21 10:32:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-21 10:32:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 48 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (22), 21 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-21 10:32:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2023-12-21 10:32:50,531 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 123 [2023-12-21 10:32:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:32:50,532 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2023-12-21 10:32:50,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 2.0) internal successors, (92), 47 states have internal predecessors, (92), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (59), 20 states have call predecessors, (59), 23 states have call successors, (59) [2023-12-21 10:32:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2023-12-21 10:32:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 10:32:50,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:32:50,533 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:32:50,548 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 10:32:50,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:32:50,749 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:32:50,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:32:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1510268740, now seen corresponding path program 20 times [2023-12-21 10:32:50,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:32:50,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026857720] [2023-12-21 10:32:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:32:50,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:32:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:50,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:32:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:52,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:32:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:32:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-21 10:32:52,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:32:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026857720] [2023-12-21 10:32:52,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026857720] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:32:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183798740] [2023-12-21 10:32:52,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:32:52,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:32:52,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:32:52,147 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 10:32:52,152 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 10:32:54,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:32:54,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:32:54,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 10:32:54,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:32:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-12-21 10:32:54,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:33:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1010 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-21 10:33:31,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183798740] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:33:31,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:33:31,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 45] total 50 [2023-12-21 10:33:31,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088813651] [2023-12-21 10:33:31,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:33:31,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 10:33:31,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:33:31,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 10:33:31,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1803, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 10:33:31,764 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 50 states, 48 states have (on average 2.0) internal successors, (96), 49 states have internal predecessors, (96), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (62), 21 states have call predecessors, (62), 24 states have call successors, (62) [2023-12-21 10:33:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:33:32,078 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2023-12-21 10:33:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 10:33:32,078 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 2.0) internal successors, (96), 49 states have internal predecessors, (96), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (62), 21 states have call predecessors, (62), 24 states have call successors, (62) Word has length 129 [2023-12-21 10:33:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:33:32,079 INFO L225 Difference]: With dead ends: 78 [2023-12-21 10:33:32,079 INFO L226 Difference]: Without dead ends: 74 [2023-12-21 10:33:32,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 252 SyntacticMatches, 21 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1635, Invalid=3335, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 10:33:32,081 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 142 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:33:32,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 122 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:33:32,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-21 10:33:32,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-21 10:33:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 50 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (23), 22 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-21 10:33:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2023-12-21 10:33:32,084 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 129 [2023-12-21 10:33:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:33:32,085 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2023-12-21 10:33:32,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 2.0) internal successors, (96), 49 states have internal predecessors, (96), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (62), 21 states have call predecessors, (62), 24 states have call successors, (62) [2023-12-21 10:33:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2023-12-21 10:33:32,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 10:33:32,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:33:32,086 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:33:32,104 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 10:33:32,299 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,SelfDestructingSolverStorable20 [2023-12-21 10:33:32,300 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:33:32,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:33:32,300 INFO L85 PathProgramCache]: Analyzing trace with hash -92396082, now seen corresponding path program 21 times [2023-12-21 10:33:32,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:33:32,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343469225] [2023-12-21 10:33:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:33:32,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:33:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:33:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:32,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:32,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:33:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:33:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2023-12-21 10:33:33,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:33:33,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343469225] [2023-12-21 10:33:33,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343469225] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:33:33,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605293635] [2023-12-21 10:33:33,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:33:33,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:33:33,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:33:33,689 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 10:33:33,690 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 10:33:36,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-12-21 10:33:36,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:33:36,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 10:33:36,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:33:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-12-21 10:33:36,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:34:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1113 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-21 10:34:20,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605293635] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:34:20,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:34:20,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 47] total 52 [2023-12-21 10:34:20,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458564575] [2023-12-21 10:34:20,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:34:20,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-21 10:34:20,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:34:20,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-21 10:34:20,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=1953, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 10:34:20,303 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 52 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (65), 22 states have call predecessors, (65), 25 states have call successors, (65) [2023-12-21 10:34:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:34:20,583 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2023-12-21 10:34:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 10:34:20,585 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (65), 22 states have call predecessors, (65), 25 states have call successors, (65) Word has length 135 [2023-12-21 10:34:20,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:34:20,586 INFO L225 Difference]: With dead ends: 81 [2023-12-21 10:34:20,586 INFO L226 Difference]: Without dead ends: 77 [2023-12-21 10:34:20,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 264 SyntacticMatches, 22 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2302 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1778, Invalid=3624, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 10:34:20,588 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 172 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:34:20,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 133 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:34:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-21 10:34:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-21 10:34:20,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 52 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (24), 23 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-21 10:34:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2023-12-21 10:34:20,591 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 135 [2023-12-21 10:34:20,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:34:20,591 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2023-12-21 10:34:20,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (65), 22 states have call predecessors, (65), 25 states have call successors, (65) [2023-12-21 10:34:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2023-12-21 10:34:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 10:34:20,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:34:20,592 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:34:20,611 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 10:34:20,808 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,SelfDestructingSolverStorable21 [2023-12-21 10:34:20,808 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:34:20,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:34:20,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1661997564, now seen corresponding path program 22 times [2023-12-21 10:34:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:34:20,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475118784] [2023-12-21 10:34:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:34:20,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:34:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:20,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:34:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:34:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:34:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-21 10:34:22,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:34:22,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475118784] [2023-12-21 10:34:22,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475118784] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:34:22,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646852812] [2023-12-21 10:34:22,401 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:34:22,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:34:22,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:34:22,403 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 10:34:22,405 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 10:34:25,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:34:25,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:34:25,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 10:34:25,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:34:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2023-12-21 10:34:25,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:35:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-21 10:35:16,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646852812] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:35:16,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:35:16,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 49] total 54 [2023-12-21 10:35:16,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327819391] [2023-12-21 10:35:16,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:35:16,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 10:35:16,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:35:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 10:35:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=753, Invalid=2109, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 10:35:16,874 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 54 states, 52 states have (on average 2.0) internal successors, (104), 53 states have internal predecessors, (104), 26 states have call successors, (26), 1 states have call predecessors, (26), 24 states have return successors, (68), 23 states have call predecessors, (68), 26 states have call successors, (68) [2023-12-21 10:35:17,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:35:17,160 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2023-12-21 10:35:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 10:35:17,161 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 52 states have (on average 2.0) internal successors, (104), 53 states have internal predecessors, (104), 26 states have call successors, (26), 1 states have call predecessors, (26), 24 states have return successors, (68), 23 states have call predecessors, (68), 26 states have call successors, (68) Word has length 141 [2023-12-21 10:35:17,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:35:17,161 INFO L225 Difference]: With dead ends: 84 [2023-12-21 10:35:17,162 INFO L226 Difference]: Without dead ends: 80 [2023-12-21 10:35:17,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 276 SyntacticMatches, 23 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2510 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1927, Invalid=3925, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 10:35:17,163 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 200 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:35:17,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 141 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:35:17,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-21 10:35:17,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-21 10:35:17,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 54 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (25), 24 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-21 10:35:17,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2023-12-21 10:35:17,166 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 141 [2023-12-21 10:35:17,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:35:17,166 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2023-12-21 10:35:17,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 52 states have (on average 2.0) internal successors, (104), 53 states have internal predecessors, (104), 26 states have call successors, (26), 1 states have call predecessors, (26), 24 states have return successors, (68), 23 states have call predecessors, (68), 26 states have call successors, (68) [2023-12-21 10:35:17,167 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2023-12-21 10:35:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 10:35:17,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:35:17,167 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:35:17,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 10:35:17,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:35:17,376 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:35:17,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:35:17,377 INFO L85 PathProgramCache]: Analyzing trace with hash 675382542, now seen corresponding path program 23 times [2023-12-21 10:35:17,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:35:17,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258277697] [2023-12-21 10:35:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:35:17,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:35:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:35:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:17,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:19,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:35:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:35:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-12-21 10:35:19,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:35:19,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258277697] [2023-12-21 10:35:19,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258277697] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:35:19,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048994405] [2023-12-21 10:35:19,107 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:35:19,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:35:19,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:35:19,108 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 10:35:19,109 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 10:35:22,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-21 10:35:22,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:35:22,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 10:35:22,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:35:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-12-21 10:35:22,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:36:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 1334 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-21 10:36:22,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048994405] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:36:22,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:36:22,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 51] total 56 [2023-12-21 10:36:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046107070] [2023-12-21 10:36:22,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:36:22,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-21 10:36:22,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:36:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-21 10:36:22,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=2271, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 10:36:22,036 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 56 states, 54 states have (on average 2.0) internal successors, (108), 55 states have internal predecessors, (108), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (71), 24 states have call predecessors, (71), 27 states have call successors, (71) [2023-12-21 10:36:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:36:22,400 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2023-12-21 10:36:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 10:36:22,400 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 2.0) internal successors, (108), 55 states have internal predecessors, (108), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (71), 24 states have call predecessors, (71), 27 states have call successors, (71) Word has length 147 [2023-12-21 10:36:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:36:22,401 INFO L225 Difference]: With dead ends: 87 [2023-12-21 10:36:22,401 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 10:36:22,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 288 SyntacticMatches, 24 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2727 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2082, Invalid=4238, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 10:36:22,402 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 211 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:36:22,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 148 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:36:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 10:36:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-21 10:36:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 55 states have (on average 1.018181818181818) internal successors, (56), 56 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (26), 25 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-21 10:36:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2023-12-21 10:36:22,406 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 147 [2023-12-21 10:36:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:36:22,406 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2023-12-21 10:36:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 2.0) internal successors, (108), 55 states have internal predecessors, (108), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (71), 24 states have call predecessors, (71), 27 states have call successors, (71) [2023-12-21 10:36:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2023-12-21 10:36:22,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 10:36:22,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:36:22,407 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:36:22,428 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 10:36:22,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:36:22,607 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:36:22,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:36:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1206824132, now seen corresponding path program 24 times [2023-12-21 10:36:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:36:22,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075212184] [2023-12-21 10:36:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:36:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:36:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:22,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:36:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:23,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:23,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:36:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:36:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2023-12-21 10:36:24,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:36:24,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075212184] [2023-12-21 10:36:24,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075212184] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:36:24,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280983589] [2023-12-21 10:36:24,643 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:36:24,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:36:24,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:36:24,646 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 10:36:24,647 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 10:36:28,836 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-12-21 10:36:28,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:36:28,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 10:36:28,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:36:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2023-12-21 10:36:28,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:37:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-21 10:37:37,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280983589] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:37:37,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:37:37,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 53] total 57 [2023-12-21 10:37:37,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378049360] [2023-12-21 10:37:37,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:37:37,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 10:37:37,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:37:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 10:37:37,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=2328, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 10:37:37,614 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 57 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 56 states have internal predecessors, (111), 27 states have call successors, (27), 1 states have call predecessors, (27), 26 states have return successors, (73), 25 states have call predecessors, (73), 27 states have call successors, (73) [2023-12-21 10:37:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:37:37,908 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2023-12-21 10:37:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 10:37:37,910 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 56 states have internal predecessors, (111), 27 states have call successors, (27), 1 states have call predecessors, (27), 26 states have return successors, (73), 25 states have call predecessors, (73), 27 states have call successors, (73) Word has length 153 [2023-12-21 10:37:37,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:37:37,911 INFO L225 Difference]: With dead ends: 90 [2023-12-21 10:37:37,911 INFO L226 Difference]: Without dead ends: 86 [2023-12-21 10:37:37,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 300 SyntacticMatches, 26 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2875 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2240, Invalid=4402, Unknown=0, NotChecked=0, Total=6642 [2023-12-21 10:37:37,912 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 107 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:37:37,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 137 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:37:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-21 10:37:37,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-12-21 10:37:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 58 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 26 states have return successors, (27), 26 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-21 10:37:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2023-12-21 10:37:37,916 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 153 [2023-12-21 10:37:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:37:37,916 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2023-12-21 10:37:37,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 56 states have internal predecessors, (111), 27 states have call successors, (27), 1 states have call predecessors, (27), 26 states have return successors, (73), 25 states have call predecessors, (73), 27 states have call successors, (73) [2023-12-21 10:37:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2023-12-21 10:37:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 10:37:37,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:37:37,917 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:37:37,941 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 10:37:38,124 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,SelfDestructingSolverStorable24 [2023-12-21 10:37:38,124 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:37:38,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:37:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1687538610, now seen corresponding path program 25 times [2023-12-21 10:37:38,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:37:38,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335619992] [2023-12-21 10:37:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:37:38,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:37:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:37:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:39,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:39,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:40,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:40,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:40,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 25 proven. 950 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2023-12-21 10:37:41,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:37:41,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335619992] [2023-12-21 10:37:41,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335619992] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:37:41,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940864626] [2023-12-21 10:37:41,873 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:37:41,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:37:41,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:37:41,874 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 10:37:41,884 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 10:37:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:46,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 107 conjunts are in the unsatisfiable core [2023-12-21 10:37:46,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:37:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-12-21 10:37:46,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:37:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-12-21 10:37:49,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940864626] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:37:49,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:37:49,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 57 [2023-12-21 10:37:49,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784682561] [2023-12-21 10:37:49,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:37:49,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 10:37:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:37:49,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 10:37:49,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=3080, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 10:37:49,030 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 57 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 31 states have internal predecessors, (61), 1 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 26 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-21 10:37:51,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:37:51,258 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2023-12-21 10:37:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 10:37:51,259 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 31 states have internal predecessors, (61), 1 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 26 states have call predecessors, (27), 1 states have call successors, (27) Word has length 159 [2023-12-21 10:37:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:37:51,260 INFO L225 Difference]: With dead ends: 93 [2023-12-21 10:37:51,261 INFO L226 Difference]: Without dead ends: 89 [2023-12-21 10:37:51,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=317, Invalid=11239, Unknown=0, NotChecked=0, Total=11556 [2023-12-21 10:37:51,263 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 55 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 3090 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:37:51,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1623 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3090 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 10:37:51,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-21 10:37:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-21 10:37:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 60 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (28), 27 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-21 10:37:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2023-12-21 10:37:51,269 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 159 [2023-12-21 10:37:51,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:37:51,270 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2023-12-21 10:37:51,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 31 states have internal predecessors, (61), 1 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 26 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-21 10:37:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2023-12-21 10:37:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 10:37:51,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:37:51,276 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:37:51,309 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 10:37:51,500 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,SelfDestructingSolverStorable25 [2023-12-21 10:37:51,500 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:37:51,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:37:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash -119727228, now seen corresponding path program 26 times [2023-12-21 10:37:51,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:37:51,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405439463] [2023-12-21 10:37:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:37:51,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:37:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:51,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:37:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:52,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:52,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:52,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:53,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:54,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:54,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:37:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:37:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 975 proven. 78 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2023-12-21 10:37:54,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:37:54,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405439463] [2023-12-21 10:37:54,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405439463] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:37:54,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840412392] [2023-12-21 10:37:54,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:37:54,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:37:54,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:37:54,192 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 10:37:54,197 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 10:37:59,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:37:59,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:37:59,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 10:37:59,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:37:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2023-12-21 10:37:59,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:37:59,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840412392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:37:59,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:37:59,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [32] total 34 [2023-12-21 10:37:59,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369579632] [2023-12-21 10:37:59,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:37:59,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 10:37:59,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:37:59,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 10:37:59,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=702, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 10:37:59,337 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-21 10:37:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:37:59,766 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2023-12-21 10:37:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 10:37:59,767 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) Word has length 165 [2023-12-21 10:37:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:37:59,767 INFO L225 Difference]: With dead ends: 89 [2023-12-21 10:37:59,767 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 10:37:59,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1230, Invalid=2430, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 10:37:59,768 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 3 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:37:59,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 330 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:37:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 10:37:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 10:37:59,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 10:37:59,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 10:37:59,769 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 165 [2023-12-21 10:37:59,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:37:59,769 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 10:37:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-21 10:37:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 10:37:59,769 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 10:37:59,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 10:37:59,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-21 10:37:59,976 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,SelfDestructingSolverStorable26 [2023-12-21 10:37:59,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 10:37:59,987 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-21 10:37:59,987 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2023-12-21 10:37:59,987 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-12-21 10:37:59,987 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2023-12-21 10:37:59,987 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (= |ULTIMATE.start_main_~input~0#1| 25) [2023-12-21 10:37:59,987 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-12-21 10:37:59,987 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 17) no Hoare annotation was computed. [2023-12-21 10:37:59,987 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-21 10:37:59,987 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2023-12-21 10:37:59,987 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2023-12-21 10:37:59,987 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 9) the Hoare annotation is: true [2023-12-21 10:37:59,987 INFO L895 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2023-12-21 10:37:59,988 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-12-21 10:37:59,988 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2023-12-21 10:37:59,990 INFO L445 BasicCegarLoop]: Path program histogram: [26, 1] [2023-12-21 10:37:59,991 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 10:37:59,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 10:37:59 BoogieIcfgContainer [2023-12-21 10:37:59,994 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 10:37:59,994 INFO L158 Benchmark]: Toolchain (without parser) took 505593.10ms. Allocated memory was 212.9MB in the beginning and 1.1GB in the end (delta: 893.4MB). Free memory was 162.8MB in the beginning and 613.8MB in the end (delta: -451.1MB). Peak memory consumption was 441.6MB. Max. memory is 8.0GB. [2023-12-21 10:37:59,995 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 212.9MB. Free memory is still 168.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 10:37:59,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.75ms. Allocated memory is still 212.9MB. Free memory was 162.4MB in the beginning and 152.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 10:37:59,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.21ms. Allocated memory is still 212.9MB. Free memory was 152.0MB in the beginning and 150.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 10:37:59,995 INFO L158 Benchmark]: Boogie Preprocessor took 36.83ms. Allocated memory is still 212.9MB. Free memory was 150.8MB in the beginning and 149.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 10:37:59,995 INFO L158 Benchmark]: RCFGBuilder took 278.13ms. Allocated memory is still 212.9MB. Free memory was 149.2MB in the beginning and 139.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-21 10:37:59,995 INFO L158 Benchmark]: TraceAbstraction took 505048.89ms. Allocated memory was 212.9MB in the beginning and 1.1GB in the end (delta: 893.4MB). Free memory was 139.0MB in the beginning and 613.8MB in the end (delta: -474.8MB). Peak memory consumption was 418.6MB. Max. memory is 8.0GB. [2023-12-21 10:37:59,996 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 212.9MB. Free memory is still 168.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.75ms. Allocated memory is still 212.9MB. Free memory was 162.4MB in the beginning and 152.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.21ms. Allocated memory is still 212.9MB. Free memory was 152.0MB in the beginning and 150.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.83ms. Allocated memory is still 212.9MB. Free memory was 150.8MB in the beginning and 149.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 278.13ms. Allocated memory is still 212.9MB. Free memory was 149.2MB in the beginning and 139.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 505048.89ms. Allocated memory was 212.9MB in the beginning and 1.1GB in the end (delta: 893.4MB). Free memory was 139.0MB in the beginning and 613.8MB in the end (delta: -474.8MB). Peak memory consumption was 418.6MB. 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 - PositiveResult [Line: 15]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 505.0s, OverallIterations: 27, TraceHistogramMax: 27, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3095 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2692 mSDsluCounter, 4100 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3812 mSDsCounter, 1011 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5561 IncrementalHoareTripleChecker+Invalid, 6572 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1011 mSolverCounterUnsat, 288 mSDtfsCounter, 5561 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6082 GetRequests, 4473 SyntacticMatches, 325 SemanticMatches, 1284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28016 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=26, InterpolantAutomatonStates: 512, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 27 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 7 HoareAnnotationTreeSize, 5 FormulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 456.9s InterpolantComputationTime, 4689 NumberOfCodeBlocks, 4689 NumberOfCodeBlocksAsserted, 226 NumberOfCheckSat, 6786 ConstructedInterpolants, 0 QuantifiedInterpolants, 19986 SizeOfPredicates, 351 NumberOfNonLiveVariables, 6006 ConjunctsInSsa, 859 ConjunctsInUnsatCore, 78 InterpolantComputations, 2 PerfectInterpolantSequences, 24180/54808 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-21 10:38:00,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...