/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/termination-memory-alloca/ex1-alloca.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:55:18,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:55:18,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:55:18,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:55:18,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:55:18,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:55:18,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:55:18,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:55:18,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:55:18,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:55:18,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:55:18,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:55:18,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:55:18,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:55:18,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:55:18,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:55:18,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:55:18,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:55:18,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:55:18,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:55:18,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:55:18,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:55:18,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:55:18,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:55:18,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 17:55:18,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:55:18,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:55:18,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:55:18,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:55:18,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:55:18,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:55:18,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:55:18,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:55:18,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:55:18,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:55:18,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:55:18,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:55:18,223 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:55:18,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:55:18,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:55:18,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:55:18,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:55:18,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:55:18,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:55:18,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:55:18,232 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:55:18,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:55:18,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:55:18,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:55:18,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:55:18,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:55:18,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:55:18,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:55:18,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:55:18,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:55:18,235 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:55:18,235 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:55:18,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:55:18,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:55:18,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:55:18,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:55:18,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:55:18,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:55:18,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:55:18,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:55:18,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:55:18,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:55:18,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:55:18,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:55:18,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:55:18,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:55:18,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:55:18,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:55:18,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:55:18,729 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:55:18,729 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:55:18,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/ex1-alloca.i [2022-10-16 17:55:18,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce25a8b2/f76ecc66a2e240c49780594a68147c43/FLAG714be9a4b [2022-10-16 17:55:19,599 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:55:19,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/ex1-alloca.i [2022-10-16 17:55:19,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce25a8b2/f76ecc66a2e240c49780594a68147c43/FLAG714be9a4b [2022-10-16 17:55:19,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce25a8b2/f76ecc66a2e240c49780594a68147c43 [2022-10-16 17:55:19,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:55:19,905 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:55:19,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:55:19,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:55:19,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:55:19,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:55:19" (1/1) ... [2022-10-16 17:55:19,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33914321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:19, skipping insertion in model container [2022-10-16 17:55:19,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:55:19" (1/1) ... [2022-10-16 17:55:19,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:55:20,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:55:20,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:55:20,420 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:55:20,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:55:20,540 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:55:20,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20 WrapperNode [2022-10-16 17:55:20,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:55:20,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:55:20,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:55:20,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:55:20,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,595 INFO L138 Inliner]: procedures = 111, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-10-16 17:55:20,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:55:20,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:55:20,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:55:20,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:55:20,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,623 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:55:20,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:55:20,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:55:20,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:55:20,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (1/1) ... [2022-10-16 17:55:20,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:55:20,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:55:20,669 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) [2022-10-16 17:55:20,692 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 [2022-10-16 17:55:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 17:55:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 17:55:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 17:55:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 17:55:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:55:20,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:55:20,853 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:55:20,856 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:55:21,016 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:55:21,023 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:55:21,024 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 17:55:21,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:55:21 BoogieIcfgContainer [2022-10-16 17:55:21,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:55:21,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:55:21,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:55:21,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:55:21,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:55:19" (1/3) ... [2022-10-16 17:55:21,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c31c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:55:21, skipping insertion in model container [2022-10-16 17:55:21,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:55:20" (2/3) ... [2022-10-16 17:55:21,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c31c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:55:21, skipping insertion in model container [2022-10-16 17:55:21,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:55:21" (3/3) ... [2022-10-16 17:55:21,038 INFO L112 eAbstractionObserver]: Analyzing ICFG ex1-alloca.i [2022-10-16 17:55:21,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:55:21,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-10-16 17:55:21,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:55:21,152 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=FINITE_AUTOMATA, 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;@27cbcfac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:55:21,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-16 17:55:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 17:55:21,167 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:55:21,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 17:55:21,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 17:55:21,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:55:21,177 INFO L85 PathProgramCache]: Analyzing trace with hash 28695845, now seen corresponding path program 1 times [2022-10-16 17:55:21,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:55:21,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946871933] [2022-10-16 17:55:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:55:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:55:21,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:55:21,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204736973] [2022-10-16 17:55:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:55:21,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:55:21,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:55:21,396 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) [2022-10-16 17:55:21,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 17:55:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:55:21,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-16 17:55:21,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:55:21,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:55:21,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:55:21,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:55:21,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2022-10-16 17:55:21,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:55:21,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:55:21,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:55:21,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2022-10-16 17:55:21,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-10-16 17:55:21,781 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-16 17:55:21,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-10-16 17:55:21,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-10-16 17:55:21,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-10-16 17:55:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:55:21,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:55:21,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:55:21,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946871933] [2022-10-16 17:55:21,880 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:55:21,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204736973] [2022-10-16 17:55:21,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204736973] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:55:21,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:55:21,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 17:55:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801934676] [2022-10-16 17:55:21,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:55:21,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 17:55:21,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:55:21,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 17:55:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:55:21,930 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:22,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:55:22,005 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2022-10-16 17:55:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 17:55:22,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-16 17:55:22,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:55:22,018 INFO L225 Difference]: With dead ends: 33 [2022-10-16 17:55:22,019 INFO L226 Difference]: Without dead ends: 17 [2022-10-16 17:55:22,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:55:22,027 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:55:22,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:55:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-16 17:55:22,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-10-16 17:55:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-10-16 17:55:22,068 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2022-10-16 17:55:22,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:55:22,068 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-10-16 17:55:22,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-10-16 17:55:22,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 17:55:22,070 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:55:22,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 17:55:22,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 17:55:22,285 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 [2022-10-16 17:55:22,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 17:55:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:55:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash 889571241, now seen corresponding path program 1 times [2022-10-16 17:55:22,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:55:22,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287248435] [2022-10-16 17:55:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:55:22,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:55:22,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:55:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890303912] [2022-10-16 17:55:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:55:22,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:55:22,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:55:22,382 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) [2022-10-16 17:55:22,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 17:55:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:55:22,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 36 conjunts are in the unsatisfiable core [2022-10-16 17:55:22,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:55:22,609 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-10-16 17:55:22,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 234 treesize of output 192 [2022-10-16 17:55:22,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:55:22,757 INFO L356 Elim1Store]: treesize reduction 96, result has 31.9 percent of original size [2022-10-16 17:55:22,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 184 treesize of output 245 [2022-10-16 17:55:22,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-10-16 17:55:22,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-10-16 17:55:22,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 17:55:22,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-10-16 17:55:23,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 51 [2022-10-16 17:55:23,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 17:55:23,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 17:55:23,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2022-10-16 17:55:23,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 73 [2022-10-16 17:55:23,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 17:55:23,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 17:55:23,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2022-10-16 17:55:23,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-10-16 17:55:23,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 17:55:23,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 17:55:23,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 71 [2022-10-16 17:55:23,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-10-16 17:55:23,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-10-16 17:55:23,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 17:55:23,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 17:55:23,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2022-10-16 17:55:40,452 WARN L233 SmtUtils]: Spent 16.32s on a formula simplification. DAG size of input: 93 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 17:55:40,776 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 17:55:40,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 5011 treesize of output 4763 [2022-10-16 17:55:41,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 17:55:41,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 17:55:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:55:41,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:55:41,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:55:41,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287248435] [2022-10-16 17:55:41,872 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:55:41,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890303912] [2022-10-16 17:55:41,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890303912] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:55:41,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:55:41,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 17:55:41,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512461613] [2022-10-16 17:55:41,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:55:41,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 17:55:41,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:55:41,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 17:55:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:55:41,879 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:41,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:55:41,907 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-10-16 17:55:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 17:55:41,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 17:55:41,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:55:41,909 INFO L225 Difference]: With dead ends: 17 [2022-10-16 17:55:41,910 INFO L226 Difference]: Without dead ends: 16 [2022-10-16 17:55:41,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:55:41,918 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:55:41,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2022-10-16 17:55:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-16 17:55:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-10-16 17:55:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-10-16 17:55:41,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2022-10-16 17:55:41,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:55:41,931 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-10-16 17:55:41,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:41,931 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-10-16 17:55:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:55:41,932 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:55:41,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:55:41,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 17:55:42,148 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 [2022-10-16 17:55:42,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 17:55:42,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:55:42,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1806904743, now seen corresponding path program 1 times [2022-10-16 17:55:42,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:55:42,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011474983] [2022-10-16 17:55:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:55:42,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:55:42,180 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:55:42,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069778] [2022-10-16 17:55:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:55:42,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:55:42,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:55:42,182 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) [2022-10-16 17:55:42,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 17:55:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:55:42,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 17:55:42,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:55:42,381 INFO L356 Elim1Store]: treesize reduction 72, result has 40.5 percent of original size [2022-10-16 17:55:42,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 108 [2022-10-16 17:55:42,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2022-10-16 17:55:42,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2022-10-16 17:55:42,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 17:55:42,457 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-16 17:55:42,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-10-16 17:55:42,503 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-10-16 17:55:42,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 33 [2022-10-16 17:55:42,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-16 17:55:42,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2022-10-16 17:55:42,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:55:42,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:55:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:55:42,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:55:42,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:55:42,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011474983] [2022-10-16 17:55:42,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:55:42,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069778] [2022-10-16 17:55:42,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069778] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:55:42,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:55:42,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 17:55:42,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344463415] [2022-10-16 17:55:42,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:55:42,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 17:55:42,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:55:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 17:55:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:55:42,608 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:42,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:55:42,637 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-10-16 17:55:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 17:55:42,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 17:55:42,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:55:42,639 INFO L225 Difference]: With dead ends: 16 [2022-10-16 17:55:42,639 INFO L226 Difference]: Without dead ends: 15 [2022-10-16 17:55:42,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:55:42,646 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:55:42,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:55:42,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-10-16 17:55:42,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-10-16 17:55:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-10-16 17:55:42,657 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2022-10-16 17:55:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:55:42,658 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-10-16 17:55:42,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-10-16 17:55:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 17:55:42,668 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:55:42,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:55:42,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 17:55:42,868 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 [2022-10-16 17:55:42,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 17:55:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:55:42,871 INFO L85 PathProgramCache]: Analyzing trace with hash 179472235, now seen corresponding path program 1 times [2022-10-16 17:55:42,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:55:42,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493189655] [2022-10-16 17:55:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:55:42,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:55:42,897 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:55:42,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241355882] [2022-10-16 17:55:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:55:42,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:55:42,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:55:42,899 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) [2022-10-16 17:55:42,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 17:55:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:55:42,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 17:55:42,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:55:42,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2022-10-16 17:55:43,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 17:55:43,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:55:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:55:43,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:55:43,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:55:43,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493189655] [2022-10-16 17:55:43,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:55:43,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241355882] [2022-10-16 17:55:43,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241355882] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:55:43,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:55:43,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:55:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743375492] [2022-10-16 17:55:43,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:55:43,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:55:43,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:55:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:55:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:55:43,032 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:55:43,062 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-10-16 17:55:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:55:43,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-16 17:55:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:55:43,063 INFO L225 Difference]: With dead ends: 15 [2022-10-16 17:55:43,063 INFO L226 Difference]: Without dead ends: 14 [2022-10-16 17:55:43,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:55:43,065 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:55:43,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:55:43,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-10-16 17:55:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-10-16 17:55:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:43,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-10-16 17:55:43,070 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2022-10-16 17:55:43,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:55:43,071 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-10-16 17:55:43,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:55:43,071 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-10-16 17:55:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 17:55:43,072 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:55:43,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:55:43,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 17:55:43,286 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 [2022-10-16 17:55:43,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 17:55:43,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:55:43,288 INFO L85 PathProgramCache]: Analyzing trace with hash -576893732, now seen corresponding path program 1 times [2022-10-16 17:55:43,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:55:43,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129747457] [2022-10-16 17:55:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:55:43,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:55:43,311 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:55:43,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242866211] [2022-10-16 17:55:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:55:43,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:55:43,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:55:43,313 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) [2022-10-16 17:55:43,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 17:55:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-16 17:55:43,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-16 17:55:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-16 17:55:43,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-16 17:55:43,476 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-16 17:55:43,477 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-10-16 17:55:43,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-10-16 17:55:43,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-10-16 17:55:43,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-10-16 17:55:43,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 17:55:43,694 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 [2022-10-16 17:55:43,700 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-10-16 17:55:43,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-16 17:55:43,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:55:43 BoogieIcfgContainer [2022-10-16 17:55:43,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-16 17:55:43,744 INFO L158 Benchmark]: Toolchain (without parser) took 23843.76ms. Allocated memory was 169.9MB in the beginning and 204.5MB in the end (delta: 34.6MB). Free memory was 142.2MB in the beginning and 115.9MB in the end (delta: 26.3MB). Peak memory consumption was 61.6MB. Max. memory is 8.0GB. [2022-10-16 17:55:43,745 INFO L158 Benchmark]: CDTParser took 1.03ms. Allocated memory is still 169.9MB. Free memory was 139.8MB in the beginning and 139.7MB in the end (delta: 84.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 17:55:43,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 634.57ms. Allocated memory is still 169.9MB. Free memory was 141.9MB in the beginning and 127.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-10-16 17:55:43,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.80ms. Allocated memory is still 169.9MB. Free memory was 127.0MB in the beginning and 125.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-16 17:55:43,746 INFO L158 Benchmark]: Boogie Preprocessor took 30.95ms. Allocated memory is still 169.9MB. Free memory was 125.1MB in the beginning and 123.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 17:55:43,746 INFO L158 Benchmark]: RCFGBuilder took 397.77ms. Allocated memory is still 169.9MB. Free memory was 123.8MB in the beginning and 147.5MB in the end (delta: -23.7MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2022-10-16 17:55:43,746 INFO L158 Benchmark]: TraceAbstraction took 22714.55ms. Allocated memory was 169.9MB in the beginning and 204.5MB in the end (delta: 34.6MB). Free memory was 147.0MB in the beginning and 115.9MB in the end (delta: 31.1MB). Peak memory consumption was 66.2MB. Max. memory is 8.0GB. [2022-10-16 17:55:43,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03ms. Allocated memory is still 169.9MB. Free memory was 139.8MB in the beginning and 139.7MB in the end (delta: 84.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 634.57ms. Allocated memory is still 169.9MB. Free memory was 141.9MB in the beginning and 127.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.80ms. Allocated memory is still 169.9MB. Free memory was 127.0MB in the beginning and 125.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.95ms. Allocated memory is still 169.9MB. Free memory was 125.1MB in the beginning and 123.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 397.77ms. Allocated memory is still 169.9MB. Free memory was 123.8MB in the beginning and 147.5MB in the end (delta: -23.7MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * TraceAbstraction took 22714.55ms. Allocated memory was 169.9MB in the beginning and 204.5MB in the end (delta: 34.6MB). Free memory was 147.0MB in the beginning and 115.9MB in the end (delta: 31.1MB). Peak memory consumption was 66.2MB. 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: 557]: integer overflow possible integer overflow possible We found a FailurePath: [L563] CALL test_fun(__VERIFIER_nondet_int(),__VERIFIER_nondet_int(),__VERIFIER_nondet_int()) [L549] int* x_ref = __builtin_alloca (sizeof(int)); [L550] int* y_ref = __builtin_alloca (sizeof(int)); [L551] int* r_ref = __builtin_alloca (sizeof(int)); [L552] r = 1 [L553] *x_ref = x [L554] *y_ref = y [L555] *r_ref = r VAL [\old(r)=0, \old(x)=1073741824, \old(y)=2147483647, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={2:0}, __builtin_alloca (sizeof(int))={4:0}, r=1, r_ref={4:0}, x=1073741824, x_ref={3:0}, y=2147483647, y_ref={2:0}] [L556] EXPR \read(*y_ref) VAL [\old(r)=0, \old(x)=1073741824, \old(y)=2147483647, \read(*y_ref)=2147483647, __builtin_alloca (sizeof(int))={4:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={2:0}, r=1, r_ref={4:0}, x=1073741824, x_ref={3:0}, y=2147483647, y_ref={2:0}] [L556] COND TRUE *y_ref > 0 [L557] EXPR \read(*r_ref) [L557] EXPR \read(*x_ref) VAL [\old(r)=0, \old(x)=1073741824, \old(y)=2147483647, \read(*r_ref)=1, \read(*x_ref)=1073741824, __builtin_alloca (sizeof(int))={4:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={2:0}, r=1, r_ref={4:0}, x=1073741824, x_ref={3:0}, y=2147483647, y_ref={2:0}] [L557] EXPR (*r_ref) * (*x_ref) [L557] *r_ref = (*r_ref) * (*x_ref) [L558] EXPR \read(*y_ref) VAL [\old(r)=0, \old(x)=1073741824, \old(y)=2147483647, \read(*y_ref)=2147483647, __builtin_alloca (sizeof(int))={4:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={2:0}, r=1, r_ref={4:0}, x=1073741824, x_ref={3:0}, y=2147483647, y_ref={2:0}] [L558] EXPR *y_ref - 1 [L558] *y_ref = *y_ref - 1 [L556] EXPR \read(*y_ref) VAL [\old(r)=0, \old(x)=1073741824, \old(y)=2147483647, \read(*y_ref)=2147483646, __builtin_alloca (sizeof(int))={4:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={2:0}, r=1, r_ref={4:0}, x=1073741824, x_ref={3:0}, y=2147483647, y_ref={2:0}] [L556] COND TRUE *y_ref > 0 [L557] EXPR \read(*r_ref) [L557] EXPR \read(*x_ref) VAL [\old(r)=0, \old(x)=1073741824, \old(y)=2147483647, \read(*r_ref)=1073741824, \read(*x_ref)=1073741824, __builtin_alloca (sizeof(int))={4:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={2:0}, r=1, r_ref={4:0}, x=1073741824, x_ref={3:0}, y=2147483647, y_ref={2:0}] [L557] (*r_ref) * (*x_ref) VAL [\old(r)=0, \old(x)=1073741824, \old(y)=2147483647, \read(*r_ref)=1073741824, \read(*x_ref)=1073741824, __builtin_alloca (sizeof(int))={4:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={2:0}, r=1, r_ref={4:0}, x=1073741824, x_ref={3:0}, y=2147483647, y_ref={2:0}] - UnprovableResult [Line: 557]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 558]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 558]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 22.6s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 29 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 22 ConstructedInterpolants, 2 QuantifiedInterpolants, 762 SizeOfPredicates, 45 NumberOfNonLiveVariables, 446 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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! [2022-10-16 17:55:43,766 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...