/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/eqn5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 19:49:40,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 19:49:40,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 19:49:40,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 19:49:40,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 19:49:40,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 19:49:40,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 19:49:40,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 19:49:40,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 19:49:40,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 19:49:40,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 19:49:40,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 19:49:40,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 19:49:40,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 19:49:40,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 19:49:40,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 19:49:40,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 19:49:40,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 19:49:40,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 19:49:40,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 19:49:40,378 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 19:49:40,400 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 19:49:40,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 19:49:40,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 19:49:40,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 19:49:40,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 19:49:40,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 19:49:40,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 19:49:40,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 19:49:40,403 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 19:49:40,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 19:49:40,403 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 19:49:40,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 19:49:40,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 19:49:40,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 19:49:40,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 19:49:40,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 19:49:40,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 19:49:40,404 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 19:49:40,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 19:49:40,404 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 19:49:40,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 19:49:40,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 19:49:40,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 19:49:40,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 19:49:40,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:49:40,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 19:49:40,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 19:49:40,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 19:49:40,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 19:49:40,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 19:49:40,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 19:49:40,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 19:49:40,406 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 19:49:40,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 19:49:40,406 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 19:49:40,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 19:49:40,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 19:49:40,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 19:49:40,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 19:49:40,632 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 19:49:40,632 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 19:49:40,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/eqn5.c [2023-04-01 19:49:41,596 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 19:49:41,743 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 19:49:41,743 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn5.c [2023-04-01 19:49:41,747 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6bb61784/1de68197625a4969a54cbcc360fd956b/FLAGe330d1d34 [2023-04-01 19:49:41,760 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6bb61784/1de68197625a4969a54cbcc360fd956b [2023-04-01 19:49:41,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 19:49:41,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 19:49:41,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 19:49:41,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 19:49:41,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 19:49:41,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1c8512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41, skipping insertion in model container [2023-04-01 19:49:41,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 19:49:41,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 19:49:41,876 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/eqn5.c[587,600] [2023-04-01 19:49:41,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:49:41,896 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 19:49:41,904 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/eqn5.c[587,600] [2023-04-01 19:49:41,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:49:41,926 INFO L208 MainTranslator]: Completed translation [2023-04-01 19:49:41,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41 WrapperNode [2023-04-01 19:49:41,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 19:49:41,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 19:49:41,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 19:49:41,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 19:49:41,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 19:49:41,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 19:49:41,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 19:49:41,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 19:49:41,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41" (1/1) ... [2023-04-01 19:49:41,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:49:41,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:41,982 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 19:49:41,987 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 19:49:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 19:49:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 19:49:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 19:49:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 19:49:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 19:49:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 19:49:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 19:49:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 19:49:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 19:49:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 19:49:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 19:49:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 19:49:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 19:49:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 19:49:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 19:49:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 19:49:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 19:49:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 19:49:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 19:49:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 19:49:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 19:49:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 19:49:42,074 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 19:49:42,076 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 19:49:42,246 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 19:49:42,250 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 19:49:42,250 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-01 19:49:42,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:49:42 BoogieIcfgContainer [2023-04-01 19:49:42,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 19:49:42,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 19:49:42,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 19:49:42,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 19:49:42,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 07:49:41" (1/3) ... [2023-04-01 19:49:42,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6f8dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:49:42, skipping insertion in model container [2023-04-01 19:49:42,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:49:41" (2/3) ... [2023-04-01 19:49:42,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6f8dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:49:42, skipping insertion in model container [2023-04-01 19:49:42,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:49:42" (3/3) ... [2023-04-01 19:49:42,257 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn5.c [2023-04-01 19:49:42,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 19:49:42,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 19:49:42,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 19:49:42,305 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;@25859f09, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 19:49:42,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 19:49:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 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 19:49:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 19:49:42,313 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:42,314 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] [2023-04-01 19:49:42,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:42,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:42,318 INFO L85 PathProgramCache]: Analyzing trace with hash 199879945, now seen corresponding path program 1 times [2023-04-01 19:49:42,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:42,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775978369] [2023-04-01 19:49:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:42,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:49:42,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:49:42,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775978369] [2023-04-01 19:49:42,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-01 19:49:42,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151467982] [2023-04-01 19:49:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:42,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:42,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:42,423 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 19:49:42,444 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 19:49:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:49:42,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-01 19:49:42,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:42,544 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 19:49:42,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:49:42,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151467982] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:49:42,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:49:42,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 19:49:42,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655576699] [2023-04-01 19:49:42,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:49:42,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 19:49:42,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:49:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 19:49:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 19:49:42,575 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 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 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 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 19:49:42,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:49:42,588 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2023-04-01 19:49:42,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 19:49:42,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 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 22 [2023-04-01 19:49:42,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:49:42,594 INFO L225 Difference]: With dead ends: 58 [2023-04-01 19:49:42,595 INFO L226 Difference]: Without dead ends: 29 [2023-04-01 19:49:42,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 19:49:42,602 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:49:42,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:49:42,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-04-01 19:49:42,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-04-01 19:49:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 19:49:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-04-01 19:49:42,635 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2023-04-01 19:49:42,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:49:42,636 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-04-01 19:49:42,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 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 19:49:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-04-01 19:49:42,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 19:49:42,638 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:42,638 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] [2023-04-01 19:49:42,645 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 19:49:42,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-01 19:49:42,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:42,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:42,844 INFO L85 PathProgramCache]: Analyzing trace with hash -386926069, now seen corresponding path program 1 times [2023-04-01 19:49:42,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:42,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728754072] [2023-04-01 19:49:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:42,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:42,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:49:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827822036] [2023-04-01 19:49:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:42,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:42,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:42,889 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 19:49:42,892 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 19:49:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:49:42,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 19:49:42,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:43,043 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-04-01 19:49:43,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-04-01 19:49:43,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-04-01 19:49:43,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-04-01 19:49:43,108 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 16 treesize of output 5 [2023-04-01 19:49:43,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2023-04-01 19:49:43,176 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 19:49:43,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:49:43,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:49:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728754072] [2023-04-01 19:49:43,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:49:43,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827822036] [2023-04-01 19:49:43,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827822036] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:49:43,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:49:43,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 19:49:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512274652] [2023-04-01 19:49:43,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:49:43,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 19:49:43,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:49:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 19:49:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-01 19:49:43,179 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:49:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:49:43,288 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2023-04-01 19:49:43,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 19:49:43,288 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-04-01 19:49:43,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:49:43,290 INFO L225 Difference]: With dead ends: 47 [2023-04-01 19:49:43,291 INFO L226 Difference]: Without dead ends: 45 [2023-04-01 19:49:43,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-01 19:49:43,293 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:49:43,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 137 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:49:43,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-04-01 19:49:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2023-04-01 19:49:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:49:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-04-01 19:49:43,307 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 22 [2023-04-01 19:49:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:49:43,307 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-04-01 19:49:43,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:49:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-04-01 19:49:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 19:49:43,310 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:43,310 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] [2023-04-01 19:49:43,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 19:49:43,516 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,SelfDestructingSolverStorable1 [2023-04-01 19:49:43,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:43,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:43,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1765590153, now seen corresponding path program 1 times [2023-04-01 19:49:43,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:43,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495817023] [2023-04-01 19:49:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:43,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:43,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:49:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146448197] [2023-04-01 19:49:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:43,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:43,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:43,558 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 19:49:43,558 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 19:49:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:49:43,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 19:49:43,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:43,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:49:43,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:49:43,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495817023] [2023-04-01 19:49:43,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:49:43,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146448197] [2023-04-01 19:49:43,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146448197] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:49:43,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:49:43,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 19:49:43,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890302719] [2023-04-01 19:49:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:49:43,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 19:49:43,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:49:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 19:49:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 19:49:43,651 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:49:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:49:43,719 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2023-04-01 19:49:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 19:49:43,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-04-01 19:49:43,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:49:43,723 INFO L225 Difference]: With dead ends: 71 [2023-04-01 19:49:43,723 INFO L226 Difference]: Without dead ends: 58 [2023-04-01 19:49:43,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 19:49:43,733 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:49:43,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 69 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:49:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-04-01 19:49:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2023-04-01 19:49:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:49:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-04-01 19:49:43,744 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2023-04-01 19:49:43,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:49:43,744 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-04-01 19:49:43,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:49:43,744 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-04-01 19:49:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 19:49:43,745 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:43,745 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] [2023-04-01 19:49:43,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 19:49:43,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:43,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:43,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1858974921, now seen corresponding path program 1 times [2023-04-01 19:49:43,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:43,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887675534] [2023-04-01 19:49:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:43,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:43,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:49:43,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793031917] [2023-04-01 19:49:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:43,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:43,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:43,978 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 19:49:43,980 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 19:49:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:49:44,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 19:49:44,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:44,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:49:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:44,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:49:44,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887675534] [2023-04-01 19:49:44,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:49:44,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793031917] [2023-04-01 19:49:44,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793031917] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:49:44,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:49:44,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-04-01 19:49:44,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126840329] [2023-04-01 19:49:44,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:49:44,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 19:49:44,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:49:44,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 19:49:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 19:49:44,109 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:49:44,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:49:44,200 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2023-04-01 19:49:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 19:49:44,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-04-01 19:49:44,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:49:44,205 INFO L225 Difference]: With dead ends: 66 [2023-04-01 19:49:44,206 INFO L226 Difference]: Without dead ends: 55 [2023-04-01 19:49:44,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-04-01 19:49:44,208 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:49:44,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 88 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:49:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-04-01 19:49:44,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2023-04-01 19:49:44,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:49:44,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-04-01 19:49:44,221 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 24 [2023-04-01 19:49:44,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:49:44,221 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-04-01 19:49:44,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:49:44,221 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-04-01 19:49:44,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 19:49:44,222 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:44,222 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] [2023-04-01 19:49:44,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 19:49:44,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:44,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:44,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:44,427 INFO L85 PathProgramCache]: Analyzing trace with hash -292108345, now seen corresponding path program 1 times [2023-04-01 19:49:44,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:44,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077929375] [2023-04-01 19:49:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:44,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:44,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:49:44,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144350070] [2023-04-01 19:49:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:44,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:44,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:44,459 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) [2023-04-01 19:49:44,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 19:49:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:49:44,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 32 conjunts are in the unsatisfiable core [2023-04-01 19:49:44,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:44,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-04-01 19:49:44,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:49:44,567 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 14 treesize of output 14 [2023-04-01 19:49:44,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-04-01 19:49:44,593 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 14 treesize of output 16 [2023-04-01 19:49:44,635 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 19 treesize of output 18 [2023-04-01 19:49:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:44,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:49:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:44,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:49:44,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077929375] [2023-04-01 19:49:44,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:49:44,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144350070] [2023-04-01 19:49:44,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144350070] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:49:44,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:49:44,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2023-04-01 19:49:44,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487145854] [2023-04-01 19:49:44,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:49:44,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 19:49:44,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:49:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 19:49:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=256, Unknown=2, NotChecked=0, Total=306 [2023-04-01 19:49:44,943 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 19:49:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:49:45,224 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2023-04-01 19:49:45,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 19:49:45,224 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-04-01 19:49:45,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:49:45,225 INFO L225 Difference]: With dead ends: 72 [2023-04-01 19:49:45,225 INFO L226 Difference]: Without dead ends: 70 [2023-04-01 19:49:45,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=456, Unknown=3, NotChecked=0, Total=552 [2023-04-01 19:49:45,226 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 86 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 19:49:45,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 221 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 19:49:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-04-01 19:49:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 44. [2023-04-01 19:49:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:49:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-04-01 19:49:45,232 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 26 [2023-04-01 19:49:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:49:45,232 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-04-01 19:49:45,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 19:49:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-04-01 19:49:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-01 19:49:45,232 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:45,233 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-04-01 19:49:45,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 19:49:45,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:45,438 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:45,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash -781361951, now seen corresponding path program 1 times [2023-04-01 19:49:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:45,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398671099] [2023-04-01 19:49:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:45,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:49:45,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934695543] [2023-04-01 19:49:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:45,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:45,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:45,458 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) [2023-04-01 19:49:45,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 19:49:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:49:45,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 19:49:45,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:45,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:49:45,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:49:45,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398671099] [2023-04-01 19:49:45,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:49:45,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934695543] [2023-04-01 19:49:45,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934695543] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:49:45,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:49:45,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 19:49:45,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118814189] [2023-04-01 19:49:45,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:49:45,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 19:49:45,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:49:45,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 19:49:45,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-01 19:49:45,560 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 19:49:45,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:49:45,637 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2023-04-01 19:49:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 19:49:45,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-04-01 19:49:45,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:49:45,638 INFO L225 Difference]: With dead ends: 69 [2023-04-01 19:49:45,638 INFO L226 Difference]: Without dead ends: 47 [2023-04-01 19:49:45,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-04-01 19:49:45,639 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:49:45,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 73 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:49:45,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-01 19:49:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2023-04-01 19:49:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:49:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-04-01 19:49:45,643 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 30 [2023-04-01 19:49:45,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:49:45,644 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-04-01 19:49:45,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 19:49:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-04-01 19:49:45,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-01 19:49:45,644 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:45,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 19:49:45,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 19:49:45,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:45,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:45,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:45,852 INFO L85 PathProgramCache]: Analyzing trace with hash 525498179, now seen corresponding path program 2 times [2023-04-01 19:49:45,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:45,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332940360] [2023-04-01 19:49:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:45,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:45,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:49:45,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027360649] [2023-04-01 19:49:45,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-01 19:49:45,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:45,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:45,875 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) [2023-04-01 19:49:45,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 19:49:45,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-01 19:49:45,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 19:49:45,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 19:49:45,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:45,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:49:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:46,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:49:46,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332940360] [2023-04-01 19:49:46,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:49:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027360649] [2023-04-01 19:49:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027360649] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:49:46,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:49:46,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-04-01 19:49:46,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256009375] [2023-04-01 19:49:46,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:49:46,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 19:49:46,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:49:46,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 19:49:46,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-04-01 19:49:46,035 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:49:46,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:49:46,255 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2023-04-01 19:49:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 19:49:46,256 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 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 19:49:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:49:46,257 INFO L225 Difference]: With dead ends: 126 [2023-04-01 19:49:46,257 INFO L226 Difference]: Without dead ends: 99 [2023-04-01 19:49:46,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-04-01 19:49:46,258 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 70 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:49:46,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 166 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:49:46,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-04-01 19:49:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 69. [2023-04-01 19:49:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 57 states have internal predecessors, (64), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 19:49:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2023-04-01 19:49:46,268 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 30 [2023-04-01 19:49:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:49:46,268 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2023-04-01 19:49:46,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:49:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2023-04-01 19:49:46,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 19:49:46,269 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:46,269 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-04-01 19:49:46,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 19:49:46,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:46,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:46,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:46,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2143768931, now seen corresponding path program 1 times [2023-04-01 19:49:46,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:46,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206351304] [2023-04-01 19:49:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:46,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:46,486 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:49:46,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431168405] [2023-04-01 19:49:46,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:46,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:46,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:46,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 19:49:46,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 19:49:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:49:46,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 44 conjunts are in the unsatisfiable core [2023-04-01 19:49:46,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:46,638 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2023-04-01 19:49:46,638 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2023-04-01 19:49:46,657 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2023-04-01 19:49:46,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 71 [2023-04-01 19:49:46,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-04-01 19:49:46,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-04-01 19:49:46,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 46 [2023-04-01 19:49:46,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2023-04-01 19:49:46,730 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 16 treesize of output 5 [2023-04-01 19:49:46,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-04-01 19:49:46,774 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 19:49:46,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-04-01 19:49:46,814 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 19:49:46,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-04-01 19:49:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:46,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:49:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:47,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:49:47,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206351304] [2023-04-01 19:49:47,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:49:47,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431168405] [2023-04-01 19:49:47,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431168405] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:49:47,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:49:47,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2023-04-01 19:49:47,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416089470] [2023-04-01 19:49:47,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:49:47,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-01 19:49:47,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:49:47,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-01 19:49:47,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-04-01 19:49:47,429 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 22 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 19:49:48,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:49:48,105 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2023-04-01 19:49:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 19:49:48,106 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2023-04-01 19:49:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:49:48,106 INFO L225 Difference]: With dead ends: 115 [2023-04-01 19:49:48,106 INFO L226 Difference]: Without dead ends: 96 [2023-04-01 19:49:48,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 19:49:48,107 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 58 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 19:49:48,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 312 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 19:49:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-04-01 19:49:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2023-04-01 19:49:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 60 states have internal predecessors, (65), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 19:49:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2023-04-01 19:49:48,116 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 34 [2023-04-01 19:49:48,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:49:48,116 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2023-04-01 19:49:48,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 19:49:48,116 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2023-04-01 19:49:48,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 19:49:48,117 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:48,117 INFO L195 NwaCegarLoop]: trace histogram [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 19:49:48,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 19:49:48,317 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,SelfDestructingSolverStorable7 [2023-04-01 19:49:48,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:48,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2094692671, now seen corresponding path program 3 times [2023-04-01 19:49:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:48,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947426813] [2023-04-01 19:49:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:48,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:48,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:49:48,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36350228] [2023-04-01 19:49:48,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 19:49:48,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:48,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:48,337 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) [2023-04-01 19:49:48,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 19:49:48,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-01 19:49:48,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 19:49:48,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 58 conjunts are in the unsatisfiable core [2023-04-01 19:49:48,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:48,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-04-01 19:49:48,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:49:48,727 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 14 treesize of output 14 [2023-04-01 19:49:48,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-04-01 19:49:48,754 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 14 treesize of output 16 [2023-04-01 19:49:48,787 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 14 treesize of output 16 [2023-04-01 19:49:48,829 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 14 treesize of output 16 [2023-04-01 19:49:48,927 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 19 treesize of output 18 [2023-04-01 19:49:48,960 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 19 treesize of output 18 [2023-04-01 19:49:48,979 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 53 treesize of output 46 [2023-04-01 19:49:48,986 INFO L321 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-04-01 19:49:48,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 85 [2023-04-01 19:49:49,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 51 treesize of output 11 [2023-04-01 19:49:51,342 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 37 treesize of output 31 [2023-04-01 19:49:51,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:49:51,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:49:51,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2023-04-01 19:49:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:51,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:49:53,190 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| c_main_~b~0.base))) (and (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_y_2 Int)) (let ((.cse1 (* v_y_2 4294967296))) (or (= 1 (select (store .cse0 (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset)) (< (+ .cse1 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse1 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0)))) (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int)) (let ((.cse2 (* v_y_4 4294967296))) (or (= (select (store .cse0 (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (< (+ .cse2 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse2 v_z_4))))))) is different from false [2023-04-01 19:49:54,158 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (mod c_main_~i~0 4294967296))) (let ((.cse9 (* .cse10 8))) (let ((.cse4 (+ .cse9 c_main_~b~0.offset)) (.cse6 (< 2147483647 .cse10)) (.cse0 (<= .cse10 2147483647)) (.cse1 (select |c_#memory_int| c_main_~b~0.base)) (.cse2 (+ .cse9 (- 34359738368) c_main_~b~0.offset))) (and (or .cse0 (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int)) (let ((.cse3 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (= (select (store (store .cse1 .cse2 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse3 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse3 v_z_4)))))) (or (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int)) (let ((.cse5 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (= (select (store (store .cse1 .cse4 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (<= 4294967296 v_z_4) (< (+ .cse5 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse5 v_z_4))))) .cse6) (or (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int)) (let ((.cse7 (* v_y_2 4294967296))) (or (= (select (store (store .cse1 .cse4 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse7 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse7 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0)))) .cse6) (or .cse0 (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int)) (let ((.cse8 (* v_y_2 4294967296))) (or (< (+ .cse8 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse8 v_z_2)) (< 2147483647 v_z_2) (= (select (store (store .cse1 .cse2 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< v_z_2 0))))))))) is different from false [2023-04-01 19:49:56,247 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (mod (+ c_main_~i~0 1) 4294967296))) (let ((.cse9 (* .cse10 8))) (let ((.cse0 (<= .cse10 2147483647)) (.cse3 (+ .cse9 (- 34359738368) c_main_~b~0.offset)) (.cse4 (< 2147483647 .cse10)) (.cse2 (select |c_#memory_int| c_main_~b~0.base)) (.cse5 (+ .cse9 c_main_~b~0.offset))) (and (or .cse0 (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int)) (let ((.cse1 (* v_y_2 4294967296))) (or (< (+ .cse1 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse1 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0) (= (select (store (store .cse2 .cse3 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1))))) (or .cse4 (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int)) (let ((.cse6 (* v_y_2 4294967296))) (or (= (select (store (store .cse2 .cse5 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse6 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse6 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0))))) (or .cse0 (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int)) (let ((.cse7 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (< (+ .cse7 v_z_4 1) c_~N~0) (= (select (store (store .cse2 .cse3 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (<= c_~N~0 (+ .cse7 v_z_4)))))) (or .cse4 (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int)) (let ((.cse8 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (= (select (store (store .cse2 .cse5 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse8 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse8 v_z_4)))))))))) is different from false [2023-04-01 19:51:05,437 WARN L223 SmtUtils]: Spent 28.34s on a formula simplification. DAG size of input: 109 DAG size of output: 68 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:51:07,401 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 16 c_main_~b~0.offset)) (.cse0 (select |c_#memory_int| c_main_~b~0.base)) (.cse4 (+ 8 c_main_~b~0.offset))) (and (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_ArrVal_296 Int)) (let ((.cse2 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (= (select (store (store (store .cse0 (+ (- 34359738360) c_main_~b~0.offset) v_ArrVal_296) .cse1 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (<= 4294967296 v_z_4) (< (+ .cse2 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse2 v_z_4))))) (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int) (v_ArrVal_296 Int)) (let ((.cse3 (* v_y_2 4294967296))) (or (< (+ .cse3 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse3 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0) (= (select (store (store (store .cse0 .cse4 v_ArrVal_296) .cse1 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1)))) (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_ArrVal_296 Int)) (let ((.cse5 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (= (select (store (store (store .cse0 .cse4 v_ArrVal_296) (+ (- 34359738352) c_main_~b~0.offset) v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse5 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse5 v_z_4))))))) is different from false [2023-04-01 19:51:15,210 WARN L223 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 67 DAG size of output: 59 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:51:33,415 WARN L223 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:51:33,489 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:51:33,491 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 89 treesize of output 85 [2023-04-01 19:51:33,496 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:51:33,498 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:51:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2023-04-01 19:51:33,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:51:33,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947426813] [2023-04-01 19:51:33,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:51:33,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36350228] [2023-04-01 19:51:33,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36350228] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:51:33,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:51:33,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2023-04-01 19:51:33,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64611772] [2023-04-01 19:51:33,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:51:33,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-04-01 19:51:33,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:51:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-04-01 19:51:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=921, Unknown=35, NotChecked=268, Total=1406 [2023-04-01 19:51:33,515 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 38 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 35 states have internal predecessors, (53), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 19:51:59,901 WARN L223 SmtUtils]: Spent 5.91s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:52:01,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-04-01 19:52:09,947 WARN L223 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 123 DAG size of output: 17 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:52:12,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:52:27,571 WARN L223 SmtUtils]: Spent 13.55s on a formula simplification that was a NOOP. DAG size: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:52:32,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:52:42,308 WARN L223 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:52:43,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-04-01 19:52:48,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:52:50,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:52:52,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:52:54,056 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_main_~i~0 1)) (.cse5 (select |c_#memory_int| c_main_~b~0.base)) (.cse6 (+ 8 c_main_~b~0.offset)) (.cse11 (+ (- 34359738360) c_main_~b~0.offset)) (.cse10 (+ 16 c_main_~b~0.offset))) (let ((.cse1 (+ c_main_~i~0 2)) (.cse0 (and (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_ArrVal_294 (Array Int Int)) (v_y_2 Int) (v_ArrVal_296 Int)) (let ((.cse13 (* v_y_2 4294967296))) (or (= (select (store (store (store (select (store |c_#memory_int| c_main_~a~0.base v_ArrVal_294) c_main_~b~0.base) .cse6 v_ArrVal_296) .cse10 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse13 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse13 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0)))) (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_ArrVal_294 (Array Int Int)) (v_ArrVal_296 Int)) (let ((.cse14 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (< (+ .cse14 v_z_4 1) c_~N~0) (= (select (store (store (store (select (store |c_#memory_int| c_main_~a~0.base v_ArrVal_294) c_main_~b~0.base) .cse11 v_ArrVal_296) .cse10 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (<= c_~N~0 (+ .cse14 v_z_4))))))) (.cse2 (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_ArrVal_296 Int)) (let ((.cse12 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (= (select (store (store (store .cse5 .cse11 v_ArrVal_296) .cse10 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (<= 4294967296 v_z_4) (< (+ .cse12 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse12 v_z_4)))))) (.cse4 (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int) (v_ArrVal_296 Int)) (let ((.cse9 (* v_y_2 4294967296))) (or (< (+ .cse9 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse9 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0) (= (select (store (store (store .cse5 .cse6 v_ArrVal_296) .cse10 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1))))) (.cse8 (< .cse3 c_~N~0))) (and (<= (mod c_~N~0 4294967296) 536870911) (or .cse0 (< (+ c_main_~i~0 3) c_~N~0) (<= c_~N~0 .cse1)) .cse2 (or .cse0 (<= c_~N~0 .cse3) (< .cse1 c_~N~0)) (<= c_~N~0 2147483647) .cse4 (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_ArrVal_296 Int)) (let ((.cse7 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (= (select (store (store (store .cse5 .cse6 v_ArrVal_296) (+ (- 34359738352) c_main_~b~0.offset) v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse7 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse7 v_z_4))))) (or .cse0 (<= c_~N~0 c_main_~i~0) .cse8) (or (and .cse2 .cse4) .cse8)))) is different from false [2023-04-01 19:53:08,803 WARN L223 SmtUtils]: Spent 10.82s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:53:14,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:53:22,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-04-01 19:53:24,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:53:26,939 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 [1] [2023-04-01 19:53:28,948 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse7 (+ c_main_~i~0 1))) (let ((.cse16 (mod .cse7 4294967296))) (let ((.cse15 (* .cse16 8)) (.cse14 (* (mod c_main_~i~0 4294967296) 8))) (let ((.cse0 (<= .cse16 2147483647)) (.cse4 (+ .cse14 c_main_~b~0.offset)) (.cse3 (+ .cse15 (- 34359738368) c_main_~b~0.offset)) (.cse8 (< 2147483647 .cse16)) (.cse2 (select |c_#memory_int| c_main_~b~0.base)) (.cse5 (+ .cse15 c_main_~b~0.offset))) (and (or .cse0 (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int)) (let ((.cse1 (* v_y_2 4294967296))) (or (< (+ .cse1 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse1 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0) (= (select (store (store .cse2 .cse3 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1))))) (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int) (v_ArrVal_296 Int)) (let ((.cse6 (* v_y_2 4294967296))) (or (= (select (store (store (store .cse2 .cse4 v_ArrVal_296) .cse5 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse6 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse6 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0)))) (or (= (select .cse2 c_main_~b~0.offset) 1) (< .cse7 c_~N~0)) (or .cse8 (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int)) (let ((.cse9 (* v_y_2 4294967296))) (or (= (select (store (store .cse2 .cse5 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse9 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse9 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0))))) (or .cse0 (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int)) (let ((.cse10 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (< (+ .cse10 v_z_4 1) c_~N~0) (= (select (store (store .cse2 .cse3 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (<= c_~N~0 (+ .cse10 v_z_4)))))) (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_ArrVal_296 Int)) (let ((.cse11 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (= (select (store (store (store .cse2 .cse4 v_ArrVal_296) .cse3 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (<= 4294967296 v_z_4) (< (+ .cse11 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse11 v_z_4))))) (or .cse8 (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int)) (let ((.cse12 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (= (select (store (store .cse2 .cse5 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse12 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse12 v_z_4)))))) (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_ArrVal_296 Int)) (let ((.cse13 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (< (+ .cse13 v_z_4 1) c_~N~0) (= (select (store (store (store .cse2 (+ .cse14 (- 34359738368) c_main_~b~0.offset) v_ArrVal_296) .cse5 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (<= c_~N~0 (+ .cse13 v_z_4)))))))))) is different from false [2023-04-01 19:53:32,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:53:33,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:53:47,151 WARN L223 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:54:03,061 WARN L223 SmtUtils]: Spent 14.25s on a formula simplification. DAG size of input: 115 DAG size of output: 107 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:54:14,976 WARN L223 SmtUtils]: Spent 11.82s on a formula simplification. DAG size of input: 148 DAG size of output: 35 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:54:16,981 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (mod c_main_~i~0 4294967296))) (let ((.cse9 (* .cse10 8))) (let ((.cse4 (+ .cse9 c_main_~b~0.offset)) (.cse6 (< 2147483647 .cse10)) (.cse0 (<= .cse10 2147483647)) (.cse1 (select |c_#memory_int| c_main_~b~0.base)) (.cse2 (+ .cse9 (- 34359738368) c_main_~b~0.offset))) (and (or .cse0 (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int)) (let ((.cse3 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (<= 4294967296 v_z_4) (= (select (store (store .cse1 .cse2 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse3 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse3 v_z_4)))))) (or (forall ((v_y_4 Int) (v_z_4 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int)) (let ((.cse5 (* v_y_4 4294967296))) (or (<= v_z_4 2147483647) (= (select (store (store .cse1 .cse4 v_ArrVal_298) (+ (* v_z_4 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (<= 4294967296 v_z_4) (< (+ .cse5 v_z_4 1) c_~N~0) (<= c_~N~0 (+ .cse5 v_z_4))))) .cse6) (or (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int)) (let ((.cse7 (* v_y_2 4294967296))) (or (= (select (store (store .cse1 .cse4 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< (+ .cse7 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse7 v_z_2)) (< 2147483647 v_z_2) (< v_z_2 0)))) .cse6) (or (= (select .cse1 c_main_~b~0.offset) 1) (< c_main_~i~0 c_~N~0)) (or .cse0 (forall ((v_z_2 Int) (v_ArrVal_299 Int) (v_ArrVal_298 Int) (v_y_2 Int)) (let ((.cse8 (* v_y_2 4294967296))) (or (< (+ .cse8 v_z_2 1) c_~N~0) (<= c_~N~0 (+ .cse8 v_z_2)) (< 2147483647 v_z_2) (= (select (store (store .cse1 .cse2 v_ArrVal_298) (+ (* v_z_2 8) c_main_~b~0.offset) v_ArrVal_299) c_main_~b~0.offset) 1) (< v_z_2 0))))))))) is different from false