/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/nla-digbench-scaling/prodbin-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 02:36:44,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 02:36:44,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 02:36:44,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 02:36:44,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 02:36:44,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 02:36:44,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 02:36:44,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 02:36:44,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 02:36:44,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 02:36:44,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 02:36:44,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 02:36:44,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 02:36:44,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 02:36:44,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 02:36:44,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 02:36:44,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 02:36:44,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 02:36:44,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 02:36:44,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 02:36:44,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 02:36:44,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 02:36:44,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 02:36:44,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 02:36:44,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 02:36:44,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 02:36:44,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 02:36:44,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 02:36:44,979 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 [2023-04-02 02:36:45,004 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 02:36:45,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 02:36:45,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 02:36:45,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 02:36:45,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 02:36:45,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 02:36:45,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 02:36:45,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 02:36:45,006 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 02:36:45,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 02:36:45,006 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 02:36:45,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 02:36:45,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 02:36:45,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 02:36:45,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 02:36:45,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 02:36:45,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 02:36:45,008 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 02:36:45,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 02:36:45,008 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 02:36:45,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 02:36:45,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 02:36:45,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 02:36:45,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 02:36:45,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:36:45,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 02:36:45,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 02:36:45,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 02:36:45,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 02:36:45,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 02:36:45,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 02:36:45,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 02:36:45,010 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 02:36:45,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 02:36:45,010 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 02:36:45,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 02:36:45,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 02:36:45,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 02:36:45,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 02:36:45,217 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 02:36:45,217 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 02:36:45,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound20.c [2023-04-02 02:36:46,343 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 02:36:46,531 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 02:36:46,532 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound20.c [2023-04-02 02:36:46,539 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0fc3a15d/8e0838e992994b559d3568290d327b4e/FLAGd9c65eb27 [2023-04-02 02:36:46,553 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0fc3a15d/8e0838e992994b559d3568290d327b4e [2023-04-02 02:36:46,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 02:36:46,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 02:36:46,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 02:36:46,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 02:36:46,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 02:36:46,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30542704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46, skipping insertion in model container [2023-04-02 02:36:46,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 02:36:46,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 02:36:46,721 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/nla-digbench-scaling/prodbin-ll_unwindbound20.c[1176,1189] [2023-04-02 02:36:46,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:36:46,740 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 02:36:46,749 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/nla-digbench-scaling/prodbin-ll_unwindbound20.c[1176,1189] [2023-04-02 02:36:46,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:36:46,764 INFO L208 MainTranslator]: Completed translation [2023-04-02 02:36:46,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46 WrapperNode [2023-04-02 02:36:46,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 02:36:46,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 02:36:46,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 02:36:46,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 02:36:46,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,802 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 02:36:46,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 02:36:46,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 02:36:46,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 02:36:46,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46" (1/1) ... [2023-04-02 02:36:46,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:36:46,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:46,839 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) [2023-04-02 02:36:46,843 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 [2023-04-02 02:36:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 02:36:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 02:36:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 02:36:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 02:36:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 02:36:46,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 02:36:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 02:36:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 02:36:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 02:36:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 02:36:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 02:36:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 02:36:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 02:36:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 02:36:46,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 02:36:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 02:36:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 02:36:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 02:36:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 02:36:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 02:36:46,946 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 02:36:46,949 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 02:36:47,118 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 02:36:47,123 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 02:36:47,123 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 02:36:47,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:36:47 BoogieIcfgContainer [2023-04-02 02:36:47,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 02:36:47,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 02:36:47,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 02:36:47,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 02:36:47,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 02:36:46" (1/3) ... [2023-04-02 02:36:47,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad15fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:36:47, skipping insertion in model container [2023-04-02 02:36:47,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:36:46" (2/3) ... [2023-04-02 02:36:47,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad15fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:36:47, skipping insertion in model container [2023-04-02 02:36:47,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:36:47" (3/3) ... [2023-04-02 02:36:47,132 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound20.c [2023-04-02 02:36:47,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 02:36:47,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 02:36:47,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 02:36:47,251 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;@7578c6cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 02:36:47,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 02:36:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 02:36:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 02:36:47,261 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:47,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:47,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:47,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1523633710, now seen corresponding path program 1 times [2023-04-02 02:36:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:47,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787730908] [2023-04-02 02:36:47,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:47,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:47,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787730908] [2023-04-02 02:36:47,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 02:36:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835960263] [2023-04-02 02:36:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:47,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:47,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:47,447 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) [2023-04-02 02:36:47,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 02:36:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:47,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 02:36:47,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:47,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:36:47,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835960263] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:36:47,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:36:47,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 02:36:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243381189] [2023-04-02 02:36:47,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:36:47,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 02:36:47,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:47,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 02:36:47,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 02:36:47,568 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-04-02 02:36:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:47,607 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2023-04-02 02:36:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 02:36:47,609 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 17 [2023-04-02 02:36:47,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:47,614 INFO L225 Difference]: With dead ends: 51 [2023-04-02 02:36:47,614 INFO L226 Difference]: Without dead ends: 25 [2023-04-02 02:36:47,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 02:36:47,619 INFO L413 NwaCegarLoop]: 33 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, 33 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 [2023-04-02 02:36:47,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:36:47,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-04-02 02:36:47,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-04-02 02:36:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 02:36:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-04-02 02:36:47,644 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2023-04-02 02:36:47,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:47,645 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-04-02 02:36:47,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-04-02 02:36:47,645 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-04-02 02:36:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 02:36:47,646 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:47,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:47,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:47,851 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 [2023-04-02 02:36:47,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:47,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:47,852 INFO L85 PathProgramCache]: Analyzing trace with hash -991958694, now seen corresponding path program 1 times [2023-04-02 02:36:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:47,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677840834] [2023-04-02 02:36:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:47,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:47,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185837597] [2023-04-02 02:36:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:47,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:47,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:47,874 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) [2023-04-02 02:36:47,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 02:36:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:47,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 02:36:47,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:47,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:36:47,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:47,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677840834] [2023-04-02 02:36:47,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:47,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185837597] [2023-04-02 02:36:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185837597] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:36:47,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:36:47,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 02:36:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054527108] [2023-04-02 02:36:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:36:47,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:36:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:36:47,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 02:36:47,990 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 02:36:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:48,000 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2023-04-02 02:36:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 02:36:48,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-04-02 02:36:48,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:48,002 INFO L225 Difference]: With dead ends: 34 [2023-04-02 02:36:48,002 INFO L226 Difference]: Without dead ends: 27 [2023-04-02 02:36:48,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 02:36:48,003 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:48,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:36:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-04-02 02:36:48,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-04-02 02:36:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 02:36:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-04-02 02:36:48,008 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2023-04-02 02:36:48,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:48,009 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-04-02 02:36:48,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 02:36:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-04-02 02:36:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 02:36:48,010 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:48,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:48,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:48,215 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 [2023-04-02 02:36:48,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:48,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash -990171234, now seen corresponding path program 1 times [2023-04-02 02:36:48,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:48,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950383115] [2023-04-02 02:36:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:48,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:48,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410356542] [2023-04-02 02:36:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:48,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:48,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:48,230 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) [2023-04-02 02:36:48,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 02:36:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:48,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 02:36:48,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:48,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:36:48,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950383115] [2023-04-02 02:36:48,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410356542] [2023-04-02 02:36:48,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410356542] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:36:48,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:36:48,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 02:36:48,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366649751] [2023-04-02 02:36:48,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:36:48,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 02:36:48,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:48,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 02:36:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 02:36:48,346 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-04-02 02:36:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:48,409 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-04-02 02:36:48,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 02:36:48,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 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 18 [2023-04-02 02:36:48,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:48,412 INFO L225 Difference]: With dead ends: 42 [2023-04-02 02:36:48,412 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 02:36:48,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-02 02:36:48,415 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:48,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 89 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:36:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 02:36:48,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-04-02 02:36:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 02:36:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-04-02 02:36:48,429 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 18 [2023-04-02 02:36:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:48,430 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-04-02 02:36:48,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-04-02 02:36:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-04-02 02:36:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-02 02:36:48,431 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:48,431 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:48,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 02:36:48,636 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 [2023-04-02 02:36:48,637 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:48,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:48,637 INFO L85 PathProgramCache]: Analyzing trace with hash 584619061, now seen corresponding path program 1 times [2023-04-02 02:36:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:48,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385653892] [2023-04-02 02:36:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:48,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:48,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637236023] [2023-04-02 02:36:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:48,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:48,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:48,667 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) [2023-04-02 02:36:48,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 02:36:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:48,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 02:36:48,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:48,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:36:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:48,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385653892] [2023-04-02 02:36:48,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:48,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637236023] [2023-04-02 02:36:48,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637236023] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:36:48,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:36:48,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-04-02 02:36:48,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181293450] [2023-04-02 02:36:48,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:36:48,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 02:36:48,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 02:36:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-02 02:36:48,878 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 02:36:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:48,938 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2023-04-02 02:36:48,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 02:36:48,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 28 [2023-04-02 02:36:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:48,941 INFO L225 Difference]: With dead ends: 70 [2023-04-02 02:36:48,942 INFO L226 Difference]: Without dead ends: 63 [2023-04-02 02:36:48,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-04-02 02:36:48,943 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 25 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:48,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 100 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:36:48,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-04-02 02:36:48,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2023-04-02 02:36:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 states have internal predecessors, (53), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 02:36:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2023-04-02 02:36:48,951 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 28 [2023-04-02 02:36:48,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:48,951 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2023-04-02 02:36:48,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 02:36:48,951 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2023-04-02 02:36:48,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-02 02:36:48,952 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:48,952 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:48,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:49,156 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 [2023-04-02 02:36:49,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:49,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash 586406521, now seen corresponding path program 1 times [2023-04-02 02:36:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:49,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428313686] [2023-04-02 02:36:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:49,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:49,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:49,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781222509] [2023-04-02 02:36:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:49,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:49,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:49,184 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) [2023-04-02 02:36:49,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 02:36:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:49,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 29 conjunts are in the unsatisfiable core [2023-04-02 02:36:49,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:49,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:36:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:36:50,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:50,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428313686] [2023-04-02 02:36:50,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:50,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781222509] [2023-04-02 02:36:50,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781222509] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:36:50,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:36:50,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-04-02 02:36:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442224857] [2023-04-02 02:36:50,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:36:50,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 02:36:50,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:50,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 02:36:50,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-04-02 02:36:50,389 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 02:36:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:51,559 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2023-04-02 02:36:51,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 02:36:51,559 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 28 [2023-04-02 02:36:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:51,562 INFO L225 Difference]: With dead ends: 103 [2023-04-02 02:36:51,562 INFO L226 Difference]: Without dead ends: 94 [2023-04-02 02:36:51,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-04-02 02:36:51,563 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 51 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:51,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 150 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 02:36:51,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-04-02 02:36:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2023-04-02 02:36:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 73 states have internal predecessors, (83), 14 states have call successors, (14), 10 states have call predecessors, (14), 8 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 02:36:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2023-04-02 02:36:51,613 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 28 [2023-04-02 02:36:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:51,613 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2023-04-02 02:36:51,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 02:36:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2023-04-02 02:36:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-02 02:36:51,614 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:51,615 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:51,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:51,819 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 [2023-04-02 02:36:51,819 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:51,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1513703477, now seen corresponding path program 1 times [2023-04-02 02:36:51,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:51,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864716865] [2023-04-02 02:36:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:51,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:51,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:51,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039455493] [2023-04-02 02:36:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:51,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:51,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:51,843 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) [2023-04-02 02:36:51,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 02:36:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:51,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 02:36:51,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 02:36:51,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:36:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 02:36:52,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:36:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864716865] [2023-04-02 02:36:52,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:36:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039455493] [2023-04-02 02:36:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039455493] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:36:52,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:36:52,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-04-02 02:36:52,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094642192] [2023-04-02 02:36:52,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:36:52,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 02:36:52,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:36:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 02:36:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 02:36:52,005 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 02:36:52,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:36:52,141 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2023-04-02 02:36:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 02:36:52,141 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2023-04-02 02:36:52,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:36:52,142 INFO L225 Difference]: With dead ends: 104 [2023-04-02 02:36:52,142 INFO L226 Difference]: Without dead ends: 89 [2023-04-02 02:36:52,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:36:52,144 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:36:52,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 117 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:36:52,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-02 02:36:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2023-04-02 02:36:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 70 states have internal predecessors, (77), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 02:36:52,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2023-04-02 02:36:52,157 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 34 [2023-04-02 02:36:52,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:36:52,157 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2023-04-02 02:36:52,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 02:36:52,157 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2023-04-02 02:36:52,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-02 02:36:52,158 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:36:52,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:36:52,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 02:36:52,364 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 [2023-04-02 02:36:52,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:36:52,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:36:52,365 INFO L85 PathProgramCache]: Analyzing trace with hash 539044694, now seen corresponding path program 1 times [2023-04-02 02:36:52,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:36:52,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882668514] [2023-04-02 02:36:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:52,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:36:52,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:36:52,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906409288] [2023-04-02 02:36:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:36:52,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:36:52,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:36:52,402 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) [2023-04-02 02:36:52,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 02:36:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:36:52,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 29 conjunts are in the unsatisfiable core [2023-04-02 02:36:52,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:36:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 02:36:53,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:37:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 02:37:14,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:37:14,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882668514] [2023-04-02 02:37:14,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:37:14,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906409288] [2023-04-02 02:37:14,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906409288] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:37:14,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:37:14,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2023-04-02 02:37:14,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684081537] [2023-04-02 02:37:14,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:37:14,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 02:37:14,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:37:14,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 02:37:14,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=215, Unknown=4, NotChecked=0, Total=272 [2023-04-02 02:37:14,035 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 02:37:20,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:37:26,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:37:28,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:37:36,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:37:40,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:37:46,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:37:57,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:38:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:38:01,051 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2023-04-02 02:38:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 02:38:01,052 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 38 [2023-04-02 02:38:01,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:38:01,053 INFO L225 Difference]: With dead ends: 135 [2023-04-02 02:38:01,053 INFO L226 Difference]: Without dead ends: 133 [2023-04-02 02:38:01,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=154, Invalid=594, Unknown=8, NotChecked=0, Total=756 [2023-04-02 02:38:01,054 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-04-02 02:38:01,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 218 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 250 Invalid, 3 Unknown, 0 Unchecked, 15.9s Time] [2023-04-02 02:38:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-04-02 02:38:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2023-04-02 02:38:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 105 states have internal predecessors, (117), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 02:38:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2023-04-02 02:38:01,064 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 38 [2023-04-02 02:38:01,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:38:01,064 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2023-04-02 02:38:01,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 02:38:01,064 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2023-04-02 02:38:01,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-02 02:38:01,065 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:38:01,065 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:38:01,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-02 02:38:01,266 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 [2023-04-02 02:38:01,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:38:01,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:38:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash 737860273, now seen corresponding path program 2 times [2023-04-02 02:38:01,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:38:01,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081052415] [2023-04-02 02:38:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:38:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:38:01,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:38:01,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088289003] [2023-04-02 02:38:01,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 02:38:01,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:38:01,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:38:01,275 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) [2023-04-02 02:38:01,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 02:38:01,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 02:38:01,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:38:01,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 44 conjunts are in the unsatisfiable core [2023-04-02 02:38:01,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:38:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 02:38:02,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:38:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 02:38:30,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:38:30,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081052415] [2023-04-02 02:38:30,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:38:30,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088289003] [2023-04-02 02:38:30,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088289003] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:38:30,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:38:30,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2023-04-02 02:38:30,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431351713] [2023-04-02 02:38:30,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:38:30,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-02 02:38:30,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:38:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-02 02:38:30,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=495, Unknown=1, NotChecked=0, Total=600 [2023-04-02 02:38:30,968 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 23 states have internal predecessors, (58), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-02 02:38:54,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:38:57,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:38:57,144 INFO L93 Difference]: Finished difference Result 165 states and 191 transitions. [2023-04-02 02:38:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 02:38:57,145 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 23 states have internal predecessors, (58), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) Word has length 48 [2023-04-02 02:38:57,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:38:57,146 INFO L225 Difference]: With dead ends: 165 [2023-04-02 02:38:57,146 INFO L226 Difference]: Without dead ends: 163 [2023-04-02 02:38:57,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=261, Invalid=1070, Unknown=1, NotChecked=0, Total=1332 [2023-04-02 02:38:57,147 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-04-02 02:38:57,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 272 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-04-02 02:38:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-04-02 02:38:57,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2023-04-02 02:38:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 126 states have (on average 1.1666666666666667) internal successors, (147), 131 states have internal predecessors, (147), 21 states have call successors, (21), 14 states have call predecessors, (21), 13 states have return successors, (19), 15 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 02:38:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 187 transitions. [2023-04-02 02:38:57,161 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 187 transitions. Word has length 48 [2023-04-02 02:38:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:38:57,161 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 187 transitions. [2023-04-02 02:38:57,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 23 states have internal predecessors, (58), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-02 02:38:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 187 transitions. [2023-04-02 02:38:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 02:38:57,162 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:38:57,162 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:38:57,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-02 02:38:57,367 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 [2023-04-02 02:38:57,369 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:38:57,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:38:57,370 INFO L85 PathProgramCache]: Analyzing trace with hash -921054650, now seen corresponding path program 2 times [2023-04-02 02:38:57,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:38:57,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765106228] [2023-04-02 02:38:57,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:38:57,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:38:57,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:38:57,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686832774] [2023-04-02 02:38:57,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 02:38:57,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:38:57,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:38:57,385 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) [2023-04-02 02:38:57,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 02:38:57,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 02:38:57,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:38:57,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 02:38:57,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:38:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:38:57,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:38:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 02:38:57,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:38:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765106228] [2023-04-02 02:38:57,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:38:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686832774] [2023-04-02 02:38:57,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686832774] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:38:57,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:38:57,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-04-02 02:38:57,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969567062] [2023-04-02 02:38:57,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:38:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 02:38:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:38:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 02:38:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-04-02 02:38:57,653 INFO L87 Difference]: Start difference. First operand 161 states and 187 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 12 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2023-04-02 02:38:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:38:57,806 INFO L93 Difference]: Finished difference Result 464 states and 541 transitions. [2023-04-02 02:38:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 02:38:57,806 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 12 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 58 [2023-04-02 02:38:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:38:57,809 INFO L225 Difference]: With dead ends: 464 [2023-04-02 02:38:57,809 INFO L226 Difference]: Without dead ends: 457 [2023-04-02 02:38:57,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-04-02 02:38:57,810 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 70 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:38:57,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 171 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:38:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-04-02 02:38:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 309. [2023-04-02 02:38:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 242 states have (on average 1.1322314049586777) internal successors, (274), 252 states have internal predecessors, (274), 36 states have call successors, (36), 31 states have call predecessors, (36), 30 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 02:38:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 344 transitions. [2023-04-02 02:38:57,841 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 344 transitions. Word has length 58 [2023-04-02 02:38:57,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:38:57,841 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 344 transitions. [2023-04-02 02:38:57,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 12 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2023-04-02 02:38:57,842 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 344 transitions. [2023-04-02 02:38:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 02:38:57,843 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:38:57,843 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:38:57,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 02:38:58,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:38:58,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:38:58,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:38:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash -919267190, now seen corresponding path program 2 times [2023-04-02 02:38:58,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:38:58,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761970498] [2023-04-02 02:38:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:38:58,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:38:58,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:38:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386225786] [2023-04-02 02:38:58,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 02:38:58,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:38:58,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:38:58,073 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 02:38:58,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 02:38:58,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 02:38:58,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:38:58,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 52 conjunts are in the unsatisfiable core [2023-04-02 02:38:58,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:39:24,346 WARN L223 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 02:39:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 11 proven. 54 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 02:39:38,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:39:53,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:39:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761970498] [2023-04-02 02:39:53,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:39:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386225786] [2023-04-02 02:39:53,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386225786] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:39:53,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:39:53,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-04-02 02:39:53,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783073634] [2023-04-02 02:39:53,149 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 02:39:53,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 02:39:53,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:39:53,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 02:39:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=661, Unknown=9, NotChecked=0, Total=812 [2023-04-02 02:39:53,150 INFO L87 Difference]: Start difference. First operand 309 states and 344 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 18 states have internal predecessors, (38), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 02:39:54,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:39:58,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:05,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:07,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:09,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:11,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:13,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:15,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:17,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:19,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:21,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:23,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:25,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:26,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 02:40:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:40:28,072 INFO L93 Difference]: Finished difference Result 332 states and 367 transitions. [2023-04-02 02:40:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 02:40:28,072 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 18 states have internal predecessors, (38), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 58 [2023-04-02 02:40:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:40:28,074 INFO L225 Difference]: With dead ends: 332 [2023-04-02 02:40:28,074 INFO L226 Difference]: Without dead ends: 330 [2023-04-02 02:40:28,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=161, Invalid=822, Unknown=9, NotChecked=0, Total=992 [2023-04-02 02:40:28,075 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 6 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2023-04-02 02:40:28,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 249 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 475 Invalid, 10 Unknown, 0 Unchecked, 33.2s Time] [2023-04-02 02:40:28,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-04-02 02:40:28,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 309. [2023-04-02 02:40:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 242 states have (on average 1.1322314049586777) internal successors, (274), 251 states have internal predecessors, (274), 35 states have call successors, (35), 32 states have call predecessors, (35), 31 states have return successors, (33), 25 states have call predecessors, (33), 33 states have call successors, (33) [2023-04-02 02:40:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 342 transitions. [2023-04-02 02:40:28,112 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 342 transitions. Word has length 58 [2023-04-02 02:40:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:40:28,112 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 342 transitions. [2023-04-02 02:40:28,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 18 states have internal predecessors, (38), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 02:40:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 342 transitions. [2023-04-02 02:40:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 02:40:28,113 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:40:28,113 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:40:28,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 02:40:28,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 02:40:28,319 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:40:28,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:40:28,319 INFO L85 PathProgramCache]: Analyzing trace with hash 619565198, now seen corresponding path program 3 times [2023-04-02 02:40:28,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:40:28,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041938303] [2023-04-02 02:40:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:40:28,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:40:28,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:40:28,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105283056] [2023-04-02 02:40:28,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 02:40:28,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:40:28,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:40:28,335 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 02:40:28,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 02:40:28,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-02 02:40:28,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:40:28,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 02:40:28,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:40:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-02 02:40:31,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:40:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 46 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 02:40:32,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:40:32,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041938303] [2023-04-02 02:40:32,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:40:32,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105283056] [2023-04-02 02:40:32,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105283056] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:40:32,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:40:32,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2023-04-02 02:40:32,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916571691] [2023-04-02 02:40:32,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:40:32,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-02 02:40:32,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:40:32,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-02 02:40:32,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-04-02 02:40:32,403 INFO L87 Difference]: Start difference. First operand 309 states and 342 transitions. Second operand has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 02:40:36,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-04-02 02:40:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:40:39,670 INFO L93 Difference]: Finished difference Result 322 states and 355 transitions. [2023-04-02 02:40:39,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 02:40:39,671 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 58 [2023-04-02 02:40:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:40:39,676 INFO L225 Difference]: With dead ends: 322 [2023-04-02 02:40:39,676 INFO L226 Difference]: Without dead ends: 318 [2023-04-02 02:40:39,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2023-04-02 02:40:39,684 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 29 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:40:39,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 193 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 02:40:39,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-04-02 02:40:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 119. [2023-04-02 02:40:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 92 states have internal predecessors, (103), 14 states have call successors, (14), 14 states have call predecessors, (14), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 02:40:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2023-04-02 02:40:39,702 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 58 [2023-04-02 02:40:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:40:39,702 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2023-04-02 02:40:39,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 02:40:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2023-04-02 02:40:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-02 02:40:39,703 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:40:39,703 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:40:39,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-02 02:40:39,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-02 02:40:39,908 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:40:39,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:40:39,909 INFO L85 PathProgramCache]: Analyzing trace with hash -788544728, now seen corresponding path program 3 times [2023-04-02 02:40:39,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:40:39,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106501430] [2023-04-02 02:40:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:40:39,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:40:39,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:40:39,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147072370] [2023-04-02 02:40:39,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 02:40:39,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:40:39,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:40:39,927 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 02:40:39,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-02 02:40:40,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-04-02 02:40:40,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:40:40,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-02 02:40:40,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:40:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:40:40,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:40:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-02 02:40:40,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:40:40,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106501430] [2023-04-02 02:40:40,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:40:40,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147072370] [2023-04-02 02:40:40,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147072370] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:40:40,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:40:40,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-04-02 02:40:40,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938532933] [2023-04-02 02:40:40,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:40:40,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 02:40:40,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:40:40,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 02:40:40,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2023-04-02 02:40:40,496 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 24 states, 24 states have (on average 6.208333333333333) internal successors, (149), 24 states have internal predecessors, (149), 22 states have call successors, (26), 13 states have call predecessors, (26), 12 states have return successors, (24), 20 states have call predecessors, (24), 21 states have call successors, (24) [2023-04-02 02:40:40,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:40:40,887 INFO L93 Difference]: Finished difference Result 224 states and 253 transitions. [2023-04-02 02:40:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-02 02:40:40,887 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.208333333333333) internal successors, (149), 24 states have internal predecessors, (149), 22 states have call successors, (26), 13 states have call predecessors, (26), 12 states have return successors, (24), 20 states have call predecessors, (24), 21 states have call successors, (24) Word has length 118 [2023-04-02 02:40:40,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:40:40,888 INFO L225 Difference]: With dead ends: 224 [2023-04-02 02:40:40,888 INFO L226 Difference]: Without dead ends: 219 [2023-04-02 02:40:40,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 210 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=665, Invalid=1141, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 02:40:40,889 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 125 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:40:40,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 225 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:40:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-04-02 02:40:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-04-02 02:40:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 172 states have (on average 1.122093023255814) internal successors, (193), 172 states have internal predecessors, (193), 24 states have call successors, (24), 24 states have call predecessors, (24), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 02:40:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 239 transitions. [2023-04-02 02:40:40,918 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 239 transitions. Word has length 118 [2023-04-02 02:40:40,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:40:40,918 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 239 transitions. [2023-04-02 02:40:40,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.208333333333333) internal successors, (149), 24 states have internal predecessors, (149), 22 states have call successors, (26), 13 states have call predecessors, (26), 12 states have return successors, (24), 20 states have call predecessors, (24), 21 states have call successors, (24) [2023-04-02 02:40:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 239 transitions. [2023-04-02 02:40:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-04-02 02:40:40,919 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:40:40,919 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:40:40,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-02 02:40:41,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-02 02:40:41,125 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:40:41,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:40:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1001774582, now seen corresponding path program 4 times [2023-04-02 02:40:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:40:41,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940587319] [2023-04-02 02:40:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:40:41,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:40:41,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:40:41,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207306117] [2023-04-02 02:40:41,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 02:40:41,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:40:41,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:40:41,140 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 02:40:41,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-02 02:40:41,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 02:40:41,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-04-02 02:40:41,289 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 02:40:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 02:40:41,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-04-02 02:40:41,439 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 02:40:41,439 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 02:40:41,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-02 02:40:41,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-02 02:40:41,651 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1] [2023-04-02 02:40:41,654 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 02:40:41,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 02:40:41 BoogieIcfgContainer [2023-04-02 02:40:41,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 02:40:41,716 INFO L158 Benchmark]: Toolchain (without parser) took 235158.79ms. Allocated memory was 181.4MB in the beginning and 276.8MB in the end (delta: 95.4MB). Free memory was 140.3MB in the beginning and 148.9MB in the end (delta: -8.5MB). Peak memory consumption was 88.3MB. Max. memory is 8.0GB. [2023-04-02 02:40:41,716 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory was 138.5MB in the beginning and 138.3MB in the end (delta: 153.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 02:40:41,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.15ms. Allocated memory is still 181.4MB. Free memory was 140.0MB in the beginning and 129.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 02:40:41,716 INFO L158 Benchmark]: Boogie Preprocessor took 40.79ms. Allocated memory is still 181.4MB. Free memory was 129.7MB in the beginning and 128.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 02:40:41,716 INFO L158 Benchmark]: RCFGBuilder took 318.06ms. Allocated memory is still 181.4MB. Free memory was 128.1MB in the beginning and 116.9MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 02:40:41,716 INFO L158 Benchmark]: TraceAbstraction took 234588.51ms. Allocated memory was 181.4MB in the beginning and 276.8MB in the end (delta: 95.4MB). Free memory was 116.2MB in the beginning and 148.9MB in the end (delta: -32.7MB). Peak memory consumption was 64.2MB. Max. memory is 8.0GB. [2023-04-02 02:40:41,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory was 138.5MB in the beginning and 138.3MB in the end (delta: 153.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.15ms. Allocated memory is still 181.4MB. Free memory was 140.0MB in the beginning and 129.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.79ms. Allocated memory is still 181.4MB. Free memory was 129.7MB in the beginning and 128.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 318.06ms. Allocated memory is still 181.4MB. Free memory was 128.1MB in the beginning and 116.9MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 234588.51ms. Allocated memory was 181.4MB in the beginning and 276.8MB in the end (delta: 95.4MB). Free memory was 116.2MB in the beginning and 148.9MB in the end (delta: -32.7MB). Peak memory consumption was 64.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 23]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L28] int counter = 0; VAL [\old(counter)=23, counter=0] [L30] int a, b; [L31] long long x, y, z; [L33] a = __VERIFIER_nondet_int() [L34] b = __VERIFIER_nondet_int() [L35] CALL assume_abort_if_not(b >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L18] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L35] RET assume_abort_if_not(b >= 1) VAL [\old(counter)=0, a=2, b=1048576, counter=0] [L37] x = a [L38] y = b [L39] z = 0 VAL [\old(counter)=0, a=2, b=1048576, counter=0, x=2, y=1048576, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=0, counter=1, x=2, y=1048576, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=1, x=2, y=1048576, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=1, x=2, y=1048576, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=1, x=2, y=1048576, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=1, x=4, y=524288, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=1, counter=2, x=4, y=524288, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=2, x=4, y=524288, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=2, x=4, y=524288, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=2, x=4, y=524288, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=2, x=8, y=262144, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=2, counter=3, x=8, y=262144, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=3, x=8, y=262144, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=3, x=8, y=262144, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=3, x=8, y=262144, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=3, x=16, y=131072, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=3, counter=4, x=16, y=131072, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=4, x=16, y=131072, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=4, x=16, y=131072, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=4, x=16, y=131072, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=4, x=32, y=65536, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=4, counter=5, x=32, y=65536, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=5, x=32, y=65536, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=5, x=32, y=65536, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=5, x=32, y=65536, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=5, x=64, y=32768, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=5, counter=6, x=64, y=32768, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=6, x=64, y=32768, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=6, x=64, y=32768, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=6, x=64, y=32768, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=6, x=128, y=16384, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=6, counter=7, x=128, y=16384, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=7, x=128, y=16384, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=7, x=128, y=16384, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=7, x=128, y=16384, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=7, x=256, y=8192, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=7, counter=8, x=256, y=8192, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=8, x=256, y=8192, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=8, x=256, y=8192, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=8, x=256, y=8192, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=8, x=512, y=4096, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=8, counter=9, x=512, y=4096, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=9, x=512, y=4096, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=9, x=512, y=4096, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=9, x=512, y=4096, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=9, x=1024, y=2048, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=9, counter=10, x=1024, y=2048, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=10, x=1024, y=2048, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=10, x=1024, y=2048, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=10, x=1024, y=2048, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=10, x=2048, y=1024, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=10, counter=11, x=2048, y=1024, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=11, x=2048, y=1024, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=11, x=2048, y=1024, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=11, x=2048, y=1024, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=11, x=4096, y=512, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=11, counter=12, x=4096, y=512, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=12] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=12] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=12, x=4096, y=512, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=12, x=4096, y=512, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=12, x=4096, y=512, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=12, x=8192, y=256, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=12, counter=13, x=8192, y=256, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=13, x=8192, y=256, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=13, x=8192, y=256, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=13, x=8192, y=256, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=13, x=16384, y=128, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=13, counter=14, x=16384, y=128, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=14, x=16384, y=128, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=14, x=16384, y=128, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=14, x=16384, y=128, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=14, x=32768, y=64, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=14, counter=15, x=32768, y=64, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=15] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=15] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=15, x=32768, y=64, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=15, x=32768, y=64, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=15, x=32768, y=64, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=15, x=65536, y=32, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=15, counter=16, x=65536, y=32, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=16, x=65536, y=32, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=16, x=65536, y=32, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=16, x=65536, y=32, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=16, x=131072, y=16, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=16, counter=17, x=131072, y=16, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=17, x=131072, y=16, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=17, x=131072, y=16, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=17, x=131072, y=16, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=17, x=262144, y=8, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=17, counter=18, x=262144, y=8, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=18] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=18] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=18, x=262144, y=8, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=18, x=262144, y=8, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=18, x=262144, y=8, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=18, x=524288, y=4, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=18, counter=19, x=524288, y=4, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=19, x=524288, y=4, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=19, x=524288, y=4, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=19, x=524288, y=4, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=19, x=1048576, y=2, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=19, counter=20, x=1048576, y=2, z=0] [L41] COND TRUE counter++<20 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=1048576, counter=20, x=1048576, y=2, z=0] [L43] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=1048576, counter=20, x=1048576, y=2, z=0] [L46] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=1048576, counter=20, x=1048576, y=2, z=0] [L50] x = 2 * x [L51] y = y / 2 VAL [\old(counter)=0, a=2, b=1048576, counter=20, x=2097152, y=1, z=0] [L41] EXPR counter++ VAL [\old(counter)=0, a=2, b=1048576, counter++=20, counter=21, x=2097152, y=1, z=0] [L41] COND FALSE !(counter++<20) [L53] CALL __VERIFIER_assert(z == (long long) a * b) VAL [\old(cond)=0, \old(counter)=0, counter=21] [L21] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=21] [L23] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 234.4s, OverallIterations: 13, TraceHistogramMax: 21, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 117.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 mSolverCounterUnknown, 453 SdHoareTripleChecker+Valid, 58.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 443 mSDsluCounter, 1883 SdHoareTripleChecker+Invalid, 58.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1587 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1883 IncrementalHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 296 mSDtfsCounter, 1883 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1021 GetRequests, 779 SyntacticMatches, 5 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1267 ImplicationChecksByTransitivity, 137.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=309occurred in iteration=9, InterpolantAutomatonStates: 190, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 382 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 112.5s InterpolantComputationTime, 756 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 911 ConstructedInterpolants, 7 QuantifiedInterpolants, 6439 SizeOfPredicates, 44 NumberOfNonLiveVariables, 1591 ConjunctsInSsa, 265 ConjunctsInUnsatCore, 20 InterpolantComputations, 3 PerfectInterpolantSequences, 513/1544 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-02 02:40:41,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...