/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/array-fpi/brs1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 19:44:54,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 19:44:54,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 19:44:54,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 19:44:54,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 19:44:54,411 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 19:44:54,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 19:44:54,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 19:44:54,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 19:44:54,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 19:44:54,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 19:44:54,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 19:44:54,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 19:44:54,414 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 19:44:54,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 19:44:54,415 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 19:44:54,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 19:44:54,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 19:44:54,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 19:44:54,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 19:44:54,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 19:44:54,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 19:44:54,415 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 19:44:54,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 19:44:54,415 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 19:44:54,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 19:44:54,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 19:44:54,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 19:44:54,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 19:44:54,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:44:54,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 19:44:54,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 19:44:54,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 19:44:54,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 19:44:54,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 19:44:54,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 19:44:54,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 19:44:54,417 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 19:44:54,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 19:44:54,417 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 19:44:54,417 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 19:44:54,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 19:44:54,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 19:44:54,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 19:44:54,637 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 19:44:54,637 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 19:44:54,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs1.c [2023-04-01 19:44:55,615 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 19:44:55,775 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 19:44:55,775 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs1.c [2023-04-01 19:44:55,780 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9394543a3/f2139f58b5624159bdbc8d332e7d0bb7/FLAG24fdf71f6 [2023-04-01 19:44:55,794 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9394543a3/f2139f58b5624159bdbc8d332e7d0bb7 [2023-04-01 19:44:55,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 19:44:55,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 19:44:55,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 19:44:55,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 19:44:55,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 19:44:55,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:44:55" (1/1) ... [2023-04-01 19:44:55,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ccaf862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:55, skipping insertion in model container [2023-04-01 19:44:55,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:44:55" (1/1) ... [2023-04-01 19:44:55,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 19:44:55,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 19:44:55,945 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs1.c[587,600] [2023-04-01 19:44:55,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:44:55,971 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 19:44:55,982 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs1.c[587,600] [2023-04-01 19:44:55,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:44:56,006 INFO L208 MainTranslator]: Completed translation [2023-04-01 19:44:56,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56 WrapperNode [2023-04-01 19:44:56,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 19:44:56,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 19:44:56,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 19:44:56,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 19:44:56,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56" (1/1) ... [2023-04-01 19:44:56,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56" (1/1) ... [2023-04-01 19:44:56,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56" (1/1) ... [2023-04-01 19:44:56,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56" (1/1) ... [2023-04-01 19:44:56,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56" (1/1) ... [2023-04-01 19:44:56,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56" (1/1) ... [2023-04-01 19:44:56,051 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56" (1/1) ... [2023-04-01 19:44:56,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56" (1/1) ... [2023-04-01 19:44:56,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 19:44:56,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 19:44:56,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 19:44:56,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 19:44:56,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56" (1/1) ... [2023-04-01 19:44:56,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:44:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:44:56,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 19:44:56,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 19:44:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 19:44:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 19:44:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 19:44:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 19:44:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 19:44:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 19:44:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 19:44:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 19:44:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 19:44:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 19:44:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 19:44:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 19:44:56,182 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 19:44:56,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 19:44:56,290 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 19:44:56,294 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 19:44:56,294 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-01 19:44:56,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:44:56 BoogieIcfgContainer [2023-04-01 19:44:56,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 19:44:56,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 19:44:56,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 19:44:56,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 19:44:56,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 07:44:55" (1/3) ... [2023-04-01 19:44:56,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d919e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:44:56, skipping insertion in model container [2023-04-01 19:44:56,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:44:56" (2/3) ... [2023-04-01 19:44:56,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d919e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:44:56, skipping insertion in model container [2023-04-01 19:44:56,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:44:56" (3/3) ... [2023-04-01 19:44:56,301 INFO L112 eAbstractionObserver]: Analyzing ICFG brs1.c [2023-04-01 19:44:56,314 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 19:44:56,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 19:44:56,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 19:44:56,367 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=LoopsAndPotentialCycles, 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;@778d2dc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 19:44:56,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 19:44:56,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:44:56,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-01 19:44:56,376 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:44:56,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:44:56,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:44:56,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:44:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash 816154861, now seen corresponding path program 1 times [2023-04-01 19:44:56,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:44:56,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748423611] [2023-04-01 19:44:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:44:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:44:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:56,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:44:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:56,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-01 19:44:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:44:56,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:44:56,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748423611] [2023-04-01 19:44:56,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748423611] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:44:56,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:44:56,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 19:44:56,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266923964] [2023-04-01 19:44:56,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:44:56,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 19:44:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:44:56,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 19:44:56,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 19:44:56,683 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:44:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:44:56,774 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2023-04-01 19:44:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 19:44:56,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-04-01 19:44:56,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:44:56,781 INFO L225 Difference]: With dead ends: 56 [2023-04-01 19:44:56,781 INFO L226 Difference]: Without dead ends: 26 [2023-04-01 19:44:56,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 19:44:56,788 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:44:56,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 31 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:44:56,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-01 19:44:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-04-01 19:44:56,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:44:56,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-04-01 19:44:56,821 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2023-04-01 19:44:56,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:44:56,822 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-04-01 19:44:56,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:44:56,823 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-04-01 19:44:56,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-01 19:44:56,824 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:44:56,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:44:56,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 19:44:56,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:44:56,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:44:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1231644863, now seen corresponding path program 1 times [2023-04-01 19:44:56,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:44:56,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501207520] [2023-04-01 19:44:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:44:56,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:44:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:44:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-01 19:44:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:44:56,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:44:56,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501207520] [2023-04-01 19:44:56,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501207520] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:44:56,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:44:56,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 19:44:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921182697] [2023-04-01 19:44:56,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:44:56,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 19:44:56,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:44:56,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 19:44:56,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 19:44:56,944 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:44:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:44:57,000 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2023-04-01 19:44:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 19:44:57,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-04-01 19:44:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:44:57,001 INFO L225 Difference]: With dead ends: 42 [2023-04-01 19:44:57,001 INFO L226 Difference]: Without dead ends: 32 [2023-04-01 19:44:57,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-01 19:44:57,002 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:44:57,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 22 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:44:57,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-01 19:44:57,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-04-01 19:44:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:44:57,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-04-01 19:44:57,010 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2023-04-01 19:44:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:44:57,010 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-04-01 19:44:57,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:44:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-04-01 19:44:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-01 19:44:57,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:44:57,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:44:57,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 19:44:57,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:44:57,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:44:57,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1305126266, now seen corresponding path program 1 times [2023-04-01 19:44:57,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:44:57,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502579890] [2023-04-01 19:44:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:44:57,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:44:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:44:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-01 19:44:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 19:44:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:44:57,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502579890] [2023-04-01 19:44:57,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502579890] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:44:57,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:44:57,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 19:44:57,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965770495] [2023-04-01 19:44:57,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:44:57,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 19:44:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:44:57,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 19:44:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-01 19:44:57,303 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:44:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:44:57,438 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-04-01 19:44:57,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 19:44:57,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-04-01 19:44:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:44:57,439 INFO L225 Difference]: With dead ends: 38 [2023-04-01 19:44:57,440 INFO L226 Difference]: Without dead ends: 32 [2023-04-01 19:44:57,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-04-01 19:44:57,441 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:44:57,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 59 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:44:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-01 19:44:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-04-01 19:44:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:44:57,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-04-01 19:44:57,446 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 27 [2023-04-01 19:44:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:44:57,446 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-04-01 19:44:57,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:44:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-04-01 19:44:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-01 19:44:57,447 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:44:57,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:44:57,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 19:44:57,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:44:57,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:44:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash -455123849, now seen corresponding path program 1 times [2023-04-01 19:44:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:44:57,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826414977] [2023-04-01 19:44:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:44:57,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:44:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:57,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:44:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-01 19:44:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:44:57,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:44:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826414977] [2023-04-01 19:44:57,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826414977] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 19:44:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266434170] [2023-04-01 19:44:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:44:57,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:44:57,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:44:57,550 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) [2023-04-01 19:44:57,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 19:44:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:57,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 19:44:57,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:44:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:44:57,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:44:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:44:57,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266434170] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:44:57,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 19:44:57,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2023-04-01 19:44:57,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610698247] [2023-04-01 19:44:57,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 19:44:57,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 19:44:57,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:44:57,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 19:44:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-04-01 19:44:57,748 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:44:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:44:57,874 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2023-04-01 19:44:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 19:44:57,875 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-04-01 19:44:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:44:57,876 INFO L225 Difference]: With dead ends: 54 [2023-04-01 19:44:57,876 INFO L226 Difference]: Without dead ends: 38 [2023-04-01 19:44:57,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-04-01 19:44:57,878 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:44:57,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:44:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-04-01 19:44:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2023-04-01 19:44:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:44:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2023-04-01 19:44:57,882 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 30 [2023-04-01 19:44:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:44:57,883 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2023-04-01 19:44:57,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:44:57,883 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2023-04-01 19:44:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-01 19:44:57,883 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:44:57,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:44:57,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 19:44:58,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:44:58,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:44:58,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:44:58,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1723075679, now seen corresponding path program 2 times [2023-04-01 19:44:58,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:44:58,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447072868] [2023-04-01 19:44:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:44:58,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:44:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:58,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:44:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:58,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-01 19:44:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:44:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:44:58,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:44:58,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447072868] [2023-04-01 19:44:58,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447072868] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 19:44:58,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345641234] [2023-04-01 19:44:58,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-01 19:44:58,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:44:58,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:44:58,712 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) [2023-04-01 19:44:58,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 19:44:58,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-01 19:44:58,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 19:44:58,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-01 19:44:58,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:44:58,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-04-01 19:44:59,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:44:59,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-04-01 19:44:59,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:44:59,272 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 19:44:59,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 41 [2023-04-01 19:44:59,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:44:59,505 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-04-01 19:44:59,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 13 [2023-04-01 19:44:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 19:44:59,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:45:00,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 90 [2023-04-01 19:45:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 19:45:00,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345641234] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:45:00,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 19:45:00,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 16] total 43 [2023-04-01 19:45:00,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927832468] [2023-04-01 19:45:00,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 19:45:00,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-04-01 19:45:00,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:45:00,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-04-01 19:45:00,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1587, Unknown=0, NotChecked=0, Total=1806 [2023-04-01 19:45:00,122 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 43 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 39 states have internal predecessors, (64), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 19:45:02,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 19:45:07,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 19:45:11,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 19:45:13,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 19:45:24,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-04-01 19:45:26,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-04-01 19:45:33,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-01 19:45:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:45:34,126 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2023-04-01 19:45:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-01 19:45:34,127 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 39 states have internal predecessors, (64), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-04-01 19:45:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:45:34,127 INFO L225 Difference]: With dead ends: 59 [2023-04-01 19:45:34,127 INFO L226 Difference]: Without dead ends: 42 [2023-04-01 19:45:34,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=757, Invalid=4494, Unknown=5, NotChecked=0, Total=5256 [2023-04-01 19:45:34,129 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 103 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 85 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:45:34,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 102 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 617 Invalid, 7 Unknown, 0 Unchecked, 15.0s Time] [2023-04-01 19:45:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-04-01 19:45:34,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2023-04-01 19:45:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:45:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-04-01 19:45:34,136 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 33 [2023-04-01 19:45:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:45:34,136 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-04-01 19:45:34,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 39 states have internal predecessors, (64), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 19:45:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-04-01 19:45:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-01 19:45:34,137 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:45:34,137 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:45:34,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 19:45:34,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:45:34,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:45:34,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:45:34,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1815203711, now seen corresponding path program 3 times [2023-04-01 19:45:34,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:45:34,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010538365] [2023-04-01 19:45:34,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:45:34,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:45:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:45:34,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:45:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:45:34,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-01 19:45:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:45:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:45:34,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:45:34,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010538365] [2023-04-01 19:45:34,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010538365] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 19:45:34,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801416934] [2023-04-01 19:45:34,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 19:45:34,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:45:34,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:45:34,463 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) [2023-04-01 19:45:34,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 19:45:34,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-01 19:45:34,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 19:45:34,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 19:45:34,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:45:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 19:45:34,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:45:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 19:45:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801416934] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:45:34,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 19:45:34,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 28 [2023-04-01 19:45:34,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447080349] [2023-04-01 19:45:34,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 19:45:34,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-01 19:45:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:45:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-01 19:45:34,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2023-04-01 19:45:34,909 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 19:45:35,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:45:35,187 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2023-04-01 19:45:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 19:45:35,188 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2023-04-01 19:45:35,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:45:35,189 INFO L225 Difference]: With dead ends: 70 [2023-04-01 19:45:35,189 INFO L226 Difference]: Without dead ends: 45 [2023-04-01 19:45:35,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=1245, Unknown=0, NotChecked=0, Total=1560 [2023-04-01 19:45:35,190 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 76 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:45:35,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 42 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:45:35,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-04-01 19:45:35,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2023-04-01 19:45:35,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:45:35,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2023-04-01 19:45:35,197 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 39 [2023-04-01 19:45:35,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:45:35,197 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2023-04-01 19:45:35,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 19:45:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2023-04-01 19:45:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 19:45:35,198 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:45:35,198 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:45:35,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 19:45:35,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:45:35,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:45:35,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:45:35,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1338016919, now seen corresponding path program 4 times [2023-04-01 19:45:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:45:35,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825167099] [2023-04-01 19:45:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:45:35,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:45:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:45:35,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:45:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:45:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-01 19:45:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:45:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:45:35,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:45:35,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825167099] [2023-04-01 19:45:35,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825167099] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 19:45:35,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990300124] [2023-04-01 19:45:35,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 19:45:35,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:45:35,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:45:35,537 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) [2023-04-01 19:45:35,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 19:45:35,591 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 19:45:35,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 19:45:35,593 WARN L260 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 52 conjunts are in the unsatisfiable core [2023-04-01 19:45:35,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:45:35,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-04-01 19:45:35,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-04-01 19:45:35,685 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 19:45:35,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-04-01 19:45:35,875 INFO L321 Elim1Store]: treesize reduction 78, result has 49.4 percent of original size [2023-04-01 19:45:35,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 92 [2023-04-01 19:45:36,718 INFO L321 Elim1Store]: treesize reduction 982, result has 19.7 percent of original size [2023-04-01 19:45:36,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 54 case distinctions, treesize of input 281 treesize of output 391 [2023-04-01 19:45:38,401 INFO L321 Elim1Store]: treesize reduction 1102, result has 19.7 percent of original size [2023-04-01 19:45:38,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 316 treesize of output 439 [2023-04-01 19:45:43,270 INFO L321 Elim1Store]: treesize reduction 1676, result has 20.9 percent of original size [2023-04-01 19:45:43,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 119 case distinctions, treesize of input 601 treesize of output 758 [2023-04-01 19:47:24,072 WARN L223 SmtUtils]: Spent 1.46m on a formula simplification. DAG size of input: 626 DAG size of output: 309 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:48:11,661 WARN L223 SmtUtils]: Spent 44.79s on a formula simplification that was a NOOP. DAG size: 309 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:48:20,692 WARN L223 SmtUtils]: Spent 8.54s on a formula simplification that was a NOOP. DAG size: 90 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:48:22,247 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 19:48:22,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 235 treesize of output 1675