./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 85017c4a5a64f245bd703090448e8d5785d54b75 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 10:53:38,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:53:38,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:53:38,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:53:38,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:53:38,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:53:38,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:53:38,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:53:38,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:53:38,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:53:38,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:53:38,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:53:38,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:53:38,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:53:38,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:53:38,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:53:38,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:53:38,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:53:38,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:53:38,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:53:38,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:53:38,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:53:38,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:53:38,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:53:38,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:53:38,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:53:38,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:53:38,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:53:38,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:53:38,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:53:38,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:53:38,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:53:38,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:53:38,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:53:38,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:53:38,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:53:38,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:53:38,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:53:38,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:53:38,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:53:38,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:53:38,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:53:38,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:53:38,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:53:38,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:53:38,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:53:38,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:53:38,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:53:38,785 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:53:38,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:53:38,785 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:53:38,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:53:38,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:53:38,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:53:38,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:53:38,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:53:38,786 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:53:38,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:53:38,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:53:38,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:53:38,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:53:38,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:53:38,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:53:38,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:53:38,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:53:38,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:53:38,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:53:38,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:53:38,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:53:38,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:53:38,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:53:38,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85017c4a5a64f245bd703090448e8d5785d54b75 [2021-08-27 10:53:39,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:53:39,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:53:39,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:53:39,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:53:39,088 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:53:39,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2021-08-27 10:53:39,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6223ba0/f7ef475521bc4a479fe2d96614092f4c/FLAG268196d0a [2021-08-27 10:53:39,501 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:53:39,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2021-08-27 10:53:39,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6223ba0/f7ef475521bc4a479fe2d96614092f4c/FLAG268196d0a [2021-08-27 10:53:39,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c6223ba0/f7ef475521bc4a479fe2d96614092f4c [2021-08-27 10:53:39,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:53:39,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:53:39,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:53:39,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:53:39,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:53:39,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447c18d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39, skipping insertion in model container [2021-08-27 10:53:39,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:53:39,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:53:39,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:53:39,657 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:53:39,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:53:39,675 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:53:39,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39 WrapperNode [2021-08-27 10:53:39,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:53:39,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:53:39,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:53:39,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:53:39,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:53:39,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:53:39,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:53:39,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:53:39,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:53:39,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:53:39,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:53:39,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:53:39,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (1/1) ... [2021-08-27 10:53:39,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:53:39,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:39,750 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) [2021-08-27 10:53:39,780 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 [2021-08-27 10:53:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:53:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:53:39,938 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:53:39,939 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 10:53:39,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:39 BoogieIcfgContainer [2021-08-27 10:53:39,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:53:39,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:53:39,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:53:39,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:53:39,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:53:39" (1/3) ... [2021-08-27 10:53:39,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:53:39, skipping insertion in model container [2021-08-27 10:53:39,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:39" (2/3) ... [2021-08-27 10:53:39,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:53:39, skipping insertion in model container [2021-08-27 10:53:39,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:39" (3/3) ... [2021-08-27 10:53:39,946 INFO L111 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction.c [2021-08-27 10:53:39,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:53:39,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 10:53:39,992 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:53:40,000 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 10:53:40,000 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 10:53:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 13 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) [2021-08-27 10:53:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-08-27 10:53:40,014 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:40,014 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-08-27 10:53:40,014 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:40,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:40,018 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-08-27 10:53:40,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:40,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61612905] [2021-08-27 10:53:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:40,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:40,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:40,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61612905] [2021-08-27 10:53:40,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61612905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:40,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:40,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:53:40,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305336639] [2021-08-27 10:53:40,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:53:40,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:40,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:53:40,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:40,157 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 13 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-08-27 10:53:40,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:40,232 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-08-27 10:53:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:53:40,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-08-27 10:53:40,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:40,239 INFO L225 Difference]: With dead ends: 26 [2021-08-27 10:53:40,239 INFO L226 Difference]: Without dead ends: 13 [2021-08-27 10:53:40,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:40,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-27 10:53:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-08-27 10:53:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-08-27 10:53:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-08-27 10:53:40,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2021-08-27 10:53:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:40,270 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-08-27 10:53:40,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-08-27 10:53:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-08-27 10:53:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:53:40,271 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:40,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:53:40,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:53:40,273 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:40,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-08-27 10:53:40,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:40,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734913048] [2021-08-27 10:53:40,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:40,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:40,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:40,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734913048] [2021-08-27 10:53:40,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734913048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:40,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:40,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:53:40,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328808617] [2021-08-27 10:53:40,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:53:40,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:40,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:53:40,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:53:40,326 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-08-27 10:53:40,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:40,381 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-08-27 10:53:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 10:53:40,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-08-27 10:53:40,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:40,382 INFO L225 Difference]: With dead ends: 17 [2021-08-27 10:53:40,382 INFO L226 Difference]: Without dead ends: 15 [2021-08-27 10:53:40,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:53:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-27 10:53:40,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-08-27 10:53:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) 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) [2021-08-27 10:53:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-08-27 10:53:40,388 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2021-08-27 10:53:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:40,388 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-08-27 10:53:40,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-08-27 10:53:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-08-27 10:53:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 10:53:40,389 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:40,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 10:53:40,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:53:40,390 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:40,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:40,396 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-08-27 10:53:40,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:40,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851334249] [2021-08-27 10:53:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:40,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:40,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:40,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851334249] [2021-08-27 10:53:40,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851334249] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:40,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:40,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:53:40,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303834634] [2021-08-27 10:53:40,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:53:40,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:40,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:53:40,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:40,413 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 10:53:40,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:40,422 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-08-27 10:53:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:53:40,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2021-08-27 10:53:40,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:40,422 INFO L225 Difference]: With dead ends: 14 [2021-08-27 10:53:40,422 INFO L226 Difference]: Without dead ends: 13 [2021-08-27 10:53:40,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:53:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-27 10:53:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-27 10:53:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-08-27 10:53:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-08-27 10:53:40,424 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-08-27 10:53:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:40,425 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-08-27 10:53:40,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 10:53:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-08-27 10:53:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-27 10:53:40,425 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:40,425 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-08-27 10:53:40,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 10:53:40,425 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:40,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:40,426 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2021-08-27 10:53:40,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:40,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813576449] [2021-08-27 10:53:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:40,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:40,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:40,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813576449] [2021-08-27 10:53:40,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813576449] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:40,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288628672] [2021-08-27 10:53:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:40,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:40,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:40,475 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) [2021-08-27 10:53:40,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 10:53:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:40,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 10:53:40,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:40,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288628672] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:40,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 10:53:40,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2021-08-27 10:53:40,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678638538] [2021-08-27 10:53:40,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:53:40,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:40,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:53:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:53:40,659 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-08-27 10:53:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:40,701 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-08-27 10:53:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:53:40,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2021-08-27 10:53:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:40,702 INFO L225 Difference]: With dead ends: 14 [2021-08-27 10:53:40,702 INFO L226 Difference]: Without dead ends: 13 [2021-08-27 10:53:40,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:53:40,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-27 10:53:40,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-08-27 10:53:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-08-27 10:53:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-08-27 10:53:40,705 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-08-27 10:53:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:40,705 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-08-27 10:53:40,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-08-27 10:53:40,705 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-08-27 10:53:40,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 10:53:40,706 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:40,706 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-08-27 10:53:40,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 10:53:40,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:40,917 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:40,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:40,917 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2021-08-27 10:53:40,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:40,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461870406] [2021-08-27 10:53:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:40,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:40,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:40,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461870406] [2021-08-27 10:53:40,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461870406] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:40,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433105963] [2021-08-27 10:53:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:40,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:40,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:40,953 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) [2021-08-27 10:53:40,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 10:53:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:40,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:53:40,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:41,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433105963] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:41,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:41,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-08-27 10:53:41,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946164086] [2021-08-27 10:53:41,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 10:53:41,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 10:53:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:53:41,049 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-08-27 10:53:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:41,101 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-08-27 10:53:41,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:53:41,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 9 [2021-08-27 10:53:41,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:41,102 INFO L225 Difference]: With dead ends: 20 [2021-08-27 10:53:41,102 INFO L226 Difference]: Without dead ends: 18 [2021-08-27 10:53:41,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:53:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-27 10:53:41,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-08-27 10:53:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-08-27 10:53:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-08-27 10:53:41,104 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2021-08-27 10:53:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:41,104 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-08-27 10:53:41,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-08-27 10:53:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-08-27 10:53:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 10:53:41,105 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:41,105 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1] [2021-08-27 10:53:41,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 10:53:41,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:41,306 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1635256875, now seen corresponding path program 2 times [2021-08-27 10:53:41,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:41,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278263963] [2021-08-27 10:53:41,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:41,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:41,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:41,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278263963] [2021-08-27 10:53:41,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278263963] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:41,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526939041] [2021-08-27 10:53:41,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:53:41,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:41,353 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) [2021-08-27 10:53:41,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 10:53:41,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:53:41,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:53:41,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:53:41,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:41,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526939041] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:41,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:41,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-08-27 10:53:41,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379457937] [2021-08-27 10:53:41,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:53:41,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:53:41,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:53:41,474 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-08-27 10:53:41,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:41,534 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-08-27 10:53:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 10:53:41,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 14 [2021-08-27 10:53:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:41,535 INFO L225 Difference]: With dead ends: 25 [2021-08-27 10:53:41,535 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 10:53:41,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:53:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 10:53:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-08-27 10:53:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 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) [2021-08-27 10:53:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-08-27 10:53:41,543 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 14 [2021-08-27 10:53:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:41,544 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-08-27 10:53:41,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-08-27 10:53:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-08-27 10:53:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 10:53:41,544 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:41,544 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1] [2021-08-27 10:53:41,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 10:53:41,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:41,756 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:41,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:41,756 INFO L82 PathProgramCache]: Analyzing trace with hash 637353757, now seen corresponding path program 3 times [2021-08-27 10:53:41,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:41,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389776976] [2021-08-27 10:53:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:41,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:41,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:41,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389776976] [2021-08-27 10:53:41,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389776976] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:41,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744963407] [2021-08-27 10:53:41,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:53:41,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:41,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:41,817 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) [2021-08-27 10:53:41,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 10:53:41,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 10:53:41,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:53:41,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:53:41,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-27 10:53:41,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744963407] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:41,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 10:53:41,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2021-08-27 10:53:41,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715880942] [2021-08-27 10:53:41,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:53:41,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:41,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:53:41,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:53:41,950 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-08-27 10:53:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:41,990 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-08-27 10:53:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:53:41,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 19 [2021-08-27 10:53:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:41,991 INFO L225 Difference]: With dead ends: 22 [2021-08-27 10:53:41,991 INFO L226 Difference]: Without dead ends: 21 [2021-08-27 10:53:41,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 67.3ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:53:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-27 10:53:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-08-27 10:53:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2021-08-27 10:53:41,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-08-27 10:53:41,996 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2021-08-27 10:53:41,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:41,996 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-08-27 10:53:41,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-08-27 10:53:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-08-27 10:53:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 10:53:41,996 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:41,997 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2021-08-27 10:53:42,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 10:53:42,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:42,215 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:42,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:42,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 1 times [2021-08-27 10:53:42,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:42,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066227730] [2021-08-27 10:53:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:42,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:42,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:42,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066227730] [2021-08-27 10:53:42,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066227730] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:42,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498386168] [2021-08-27 10:53:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:42,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:42,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:42,253 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) [2021-08-27 10:53:42,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-27 10:53:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:42,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:53:42,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:42,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498386168] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:42,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:42,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-27 10:53:42,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941435108] [2021-08-27 10:53:42,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 10:53:42,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:42,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 10:53:42,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:53:42,366 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-08-27 10:53:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:42,396 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-08-27 10:53:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:53:42,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2021-08-27 10:53:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:42,397 INFO L225 Difference]: With dead ends: 28 [2021-08-27 10:53:42,397 INFO L226 Difference]: Without dead ends: 27 [2021-08-27 10:53:42,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:53:42,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-27 10:53:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-08-27 10:53:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 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) [2021-08-27 10:53:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-08-27 10:53:42,399 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2021-08-27 10:53:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:42,399 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-08-27 10:53:42,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-08-27 10:53:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-08-27 10:53:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-27 10:53:42,400 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:42,400 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-08-27 10:53:42,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-27 10:53:42,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:42,601 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:42,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:42,601 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2021-08-27 10:53:42,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:42,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539336618] [2021-08-27 10:53:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:42,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:42,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:42,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539336618] [2021-08-27 10:53:42,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539336618] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:42,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025199026] [2021-08-27 10:53:42,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:53:42,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:42,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:42,653 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) [2021-08-27 10:53:42,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-27 10:53:42,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:53:42,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:53:42,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 10:53:42,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:42,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025199026] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:42,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:42,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-27 10:53:42,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503317344] [2021-08-27 10:53:42,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:53:42,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:42,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:53:42,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:53:42,820 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-08-27 10:53:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:42,847 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-08-27 10:53:42,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:53:42,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2021-08-27 10:53:42,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:42,848 INFO L225 Difference]: With dead ends: 33 [2021-08-27 10:53:42,848 INFO L226 Difference]: Without dead ends: 32 [2021-08-27 10:53:42,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:53:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-27 10:53:42,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-08-27 10:53:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 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) [2021-08-27 10:53:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-08-27 10:53:42,853 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2021-08-27 10:53:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:42,854 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-08-27 10:53:42,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-08-27 10:53:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-08-27 10:53:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 10:53:42,854 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:42,855 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2021-08-27 10:53:42,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-27 10:53:43,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:43,061 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:43,061 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 3 times [2021-08-27 10:53:43,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:43,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720940933] [2021-08-27 10:53:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:43,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:43,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:43,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720940933] [2021-08-27 10:53:43,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720940933] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:43,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486301143] [2021-08-27 10:53:43,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:53:43,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:43,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:43,136 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) [2021-08-27 10:53:43,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-27 10:53:43,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-27 10:53:43,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:53:43,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 10:53:43,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-27 10:53:43,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486301143] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:43,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:43,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-08-27 10:53:43,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831677924] [2021-08-27 10:53:43,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 10:53:43,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:43,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 10:53:43,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:53:43,374 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 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) [2021-08-27 10:53:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:43,822 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-08-27 10:53:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-27 10:53:43,822 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 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 30 [2021-08-27 10:53:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:43,822 INFO L225 Difference]: With dead ends: 38 [2021-08-27 10:53:43,822 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 10:53:43,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 445.4ms TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2021-08-27 10:53:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 10:53:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 10:53:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 10:53:43,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-08-27 10:53:43,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:43,823 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 10:53:43,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 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) [2021-08-27 10:53:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 10:53:43,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 10:53:43,825 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:43,825 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:43,825 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:43,826 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:43,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-27 10:53:44,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:44,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 10:53:44,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:53:44,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:53:44,071 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-08-27 10:53:44,071 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 10:53:44,071 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-08-27 10:53:44,071 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-08-27 10:53:44,071 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-08-27 10:53:44,071 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-08-27 10:53:44,072 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-08-27 10:53:44,072 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 10:53:44,072 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 10:53:44,072 INFO L860 garLoopResultBuilder]: At program point L22(lines 14 23) the Hoare annotation is: true [2021-08-27 10:53:44,072 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-08-27 10:53:44,072 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-08-27 10:53:44,072 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 21) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 2147483647) (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483648) 2) 1)) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-08-27 10:53:44,072 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2021-08-27 10:53:44,074 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:53:44,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:53:44 BoogieIcfgContainer [2021-08-27 10:53:44,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:53:44,083 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:53:44,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:53:44,083 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:53:44,083 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:39" (3/4) ... [2021-08-27 10:53:44,085 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 10:53:44,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 10:53:44,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 10:53:44,106 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:53:44,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:53:44,107 INFO L168 Benchmark]: Toolchain (without parser) took 4587.21 ms. Allocated memory was 48.2 MB in the beginning and 88.1 MB in the end (delta: 39.8 MB). Free memory was 24.3 MB in the beginning and 42.6 MB in the end (delta: -18.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:44,107 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 30.5 MB in the end (delta: 51.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:53:44,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.48 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 24.1 MB in the beginning and 45.6 MB in the end (delta: -21.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:44,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.72 ms. Allocated memory is still 60.8 MB. Free memory was 45.6 MB in the beginning and 44.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:44,108 INFO L168 Benchmark]: Boogie Preprocessor took 19.26 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 43.3 MB in the end (delta: 917.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:53:44,108 INFO L168 Benchmark]: RCFGBuilder took 212.34 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 34.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:44,108 INFO L168 Benchmark]: TraceAbstraction took 4140.86 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 33.7 MB in the beginning and 44.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:44,108 INFO L168 Benchmark]: Witness Printer took 23.41 ms. Allocated memory is still 88.1 MB. Free memory was 44.7 MB in the beginning and 42.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:44,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 30.5 MB in the end (delta: 51.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 160.48 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 24.1 MB in the beginning and 45.6 MB in the end (delta: -21.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.72 ms. Allocated memory is still 60.8 MB. Free memory was 45.6 MB in the beginning and 44.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.26 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 43.3 MB in the end (delta: 917.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 212.34 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 34.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4140.86 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 33.7 MB in the beginning and 44.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * Witness Printer took 23.41 ms. Allocated memory is still 88.1 MB. Free memory was 44.7 MB in the beginning and 42.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4083.7ms, OverallIterations: 10, TraceHistogramMax: 6, EmptinessCheckTime: 9.2ms, AutomataDifference: 882.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 31.5ms, InitialAbstractionConstructionTime: 7.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 95 SDslu, 19 SDs, 0 SdLazy, 236 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 273.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 710.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.8ms AutomataMinimizationTime, 10 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 22 HoareAnnotationTreeSize, 2 FomulaSimplifications, 180 FormulaSimplificationTreeSizeReduction, 10.9ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 16.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 18.9ms SsaConstructionTime, 98.9ms SatisfiabilityAnalysisTime, 1096.4ms InterpolantComputationTime, 263 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 806 SizeOfPredicates, 1 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 75/366 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((y <= 2147483647 && y <= (x * -1 + 2147483648) / 2 + 1) && 1 <= y) && x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-08-27 10:53:44,132 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...