./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.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/BradleyMannaSipma-CAV2005-Fig1.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 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:53:32,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:53:32,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:53:32,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:53:32,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:53:32,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:53:32,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:53:32,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:53:32,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:53:32,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:53:32,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:53:32,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:53:32,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:53:32,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:53:32,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:53:32,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:53:32,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:53:32,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:53:32,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:53:32,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:53:32,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:53:32,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:53:32,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:53:32,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:53:32,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:53:32,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:53:32,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:53:32,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:53:32,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:53:32,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:53:32,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:53:32,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:53:32,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:53:32,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:53:32,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:53:32,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:53:32,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:53:32,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:53:32,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:53:32,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:53:32,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:53:32,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:53:32,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:53:32,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:53:32,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:53:32,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:53:32,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:53:32,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:53:32,543 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:53:32,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:53:32,543 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:53:32,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:53:32,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:53:32,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:53:32,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:53:32,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:53:32,544 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:53:32,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:53:32,544 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:53:32,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:53:32,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:53:32,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:53:32,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:53:32,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:53:32,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:53:32,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:53:32,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:53:32,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:53:32,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:53:32,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:53:32,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:53:32,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2021-08-27 10:53:32,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:53:32,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:53:32,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:53:32,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:53:32,788 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:53:32,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2021-08-27 10:53:32,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f051f3930/e40b5174f3c7430eb916f3d683d1de85/FLAG03168da27 [2021-08-27 10:53:33,203 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:53:33,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2021-08-27 10:53:33,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f051f3930/e40b5174f3c7430eb916f3d683d1de85/FLAG03168da27 [2021-08-27 10:53:33,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f051f3930/e40b5174f3c7430eb916f3d683d1de85 [2021-08-27 10:53:33,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:53:33,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:53:33,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:53:33,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:53:33,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:53:33,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f2a18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33, skipping insertion in model container [2021-08-27 10:53:33,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:53:33,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:53:33,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:53:33,352 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:53:33,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:53:33,369 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:53:33,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33 WrapperNode [2021-08-27 10:53:33,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:53:33,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:53:33,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:53:33,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:53:33,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:53:33,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:53:33,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:53:33,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:53:33,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:53:33,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:53:33,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:53:33,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:53:33,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (1/1) ... [2021-08-27 10:53:33,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:53:33,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:33,442 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 10:53:33,458 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 10:53:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:53:33,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:53:33,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:53:33,651 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 10:53:33,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:33 BoogieIcfgContainer [2021-08-27 10:53:33,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:53:33,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:53:33,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:53:33,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:53:33,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:53:33" (1/3) ... [2021-08-27 10:53:33,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d12b451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:53:33, skipping insertion in model container [2021-08-27 10:53:33,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:53:33" (2/3) ... [2021-08-27 10:53:33,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d12b451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:53:33, skipping insertion in model container [2021-08-27 10:53:33,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:33" (3/3) ... [2021-08-27 10:53:33,659 INFO L111 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1.c [2021-08-27 10:53:33,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:53:33,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 10:53:33,699 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:53:33,704 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 10:53:33,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 10:53:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 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 10:53:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:53:33,718 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:33,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:53:33,724 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 10:53:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:33,728 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2021-08-27 10:53:33,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:33,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082630276] [2021-08-27 10:53:33,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:33,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:33,848 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 10:53:33,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:33,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082630276] [2021-08-27 10:53:33,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082630276] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:33,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:33,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:53:33,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779412565] [2021-08-27 10:53:33,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:53:33,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:33,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:53:33,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:53:33,874 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:33,994 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2021-08-27 10:53:33,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 10:53:33,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-27 10:53:33,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:34,002 INFO L225 Difference]: With dead ends: 42 [2021-08-27 10:53:34,002 INFO L226 Difference]: Without dead ends: 24 [2021-08-27 10:53:34,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:53:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-27 10:53:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2021-08-27 10:53:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-08-27 10:53:34,033 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-08-27 10:53:34,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:34,034 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-27 10:53:34,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:34,034 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-08-27 10:53:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:53:34,035 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:34,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:53:34,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:53:34,035 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:34,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:34,038 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2021-08-27 10:53:34,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:34,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224672816] [2021-08-27 10:53:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:34,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:34,072 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 10:53:34,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:34,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224672816] [2021-08-27 10:53:34,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224672816] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:34,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:53:34,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:53:34,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455481437] [2021-08-27 10:53:34,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:53:34,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:34,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:53:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:53:34,078 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:34,121 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-08-27 10:53:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 10:53:34,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-27 10:53:34,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:34,122 INFO L225 Difference]: With dead ends: 25 [2021-08-27 10:53:34,122 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 10:53:34,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:53:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 10:53:34,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2021-08-27 10:53:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-08-27 10:53:34,125 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-08-27 10:53:34,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:34,125 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-27 10:53:34,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:34,125 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-08-27 10:53:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 10:53:34,126 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:34,126 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-08-27 10:53:34,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:53:34,126 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:34,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:34,127 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2021-08-27 10:53:34,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:34,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769987429] [2021-08-27 10:53:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:34,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:34,182 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 10:53:34,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:34,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769987429] [2021-08-27 10:53:34,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769987429] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:34,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906267458] [2021-08-27 10:53:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:34,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:34,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:34,185 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 10:53:34,186 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 10:53:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:34,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:53:34,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:34,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906267458] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:34,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 10:53:34,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-08-27 10:53:34,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056653228] [2021-08-27 10:53:34,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:53:34,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:53:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:53:34,354 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:53:34,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:34,407 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-08-27 10:53:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 10:53:34,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:53:34,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:34,409 INFO L225 Difference]: With dead ends: 32 [2021-08-27 10:53:34,409 INFO L226 Difference]: Without dead ends: 31 [2021-08-27 10:53:34,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:53:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-27 10:53:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2021-08-27 10:53:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 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 10:53:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-08-27 10:53:34,414 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2021-08-27 10:53:34,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:34,415 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-08-27 10:53:34,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:53:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-08-27 10:53:34,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 10:53:34,416 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:34,416 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:53:34,434 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 10:53:34,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:34,624 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:34,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:34,624 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2021-08-27 10:53:34,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:34,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380447623] [2021-08-27 10:53:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:34,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:34,651 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 10:53:34,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:34,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380447623] [2021-08-27 10:53:34,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380447623] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:34,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007729487] [2021-08-27 10:53:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:34,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:34,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:34,661 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 10:53:34,679 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 10:53:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:34,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:53:34,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:34,790 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 10:53:34,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007729487] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:34,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:34,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-08-27 10:53:34,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066036793] [2021-08-27 10:53:34,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 10:53:34,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:34,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 10:53:34,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:53:34,793 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:34,909 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-08-27 10:53:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 10:53:34,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-27 10:53:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:34,911 INFO L225 Difference]: With dead ends: 48 [2021-08-27 10:53:34,912 INFO L226 Difference]: Without dead ends: 47 [2021-08-27 10:53:34,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:53:34,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-27 10:53:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2021-08-27 10:53:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 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 10:53:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-08-27 10:53:34,923 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 9 [2021-08-27 10:53:34,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:34,923 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-08-27 10:53:34,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:34,923 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-08-27 10:53:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 10:53:34,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:34,923 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:53:34,940 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 10:53:35,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-27 10:53:35,140 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:35,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:35,140 INFO L82 PathProgramCache]: Analyzing trace with hash -22254561, now seen corresponding path program 1 times [2021-08-27 10:53:35,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:35,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551009749] [2021-08-27 10:53:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:35,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:35,186 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 10:53:35,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:35,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551009749] [2021-08-27 10:53:35,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551009749] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:35,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401577432] [2021-08-27 10:53:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:35,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:35,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:35,188 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 10:53:35,191 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 10:53:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:35,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 10:53:35,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:35,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401577432] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:35,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:35,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2021-08-27 10:53:35,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871001249] [2021-08-27 10:53:35,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 10:53:35,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:35,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 10:53:35,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:53:35,327 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:35,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:35,362 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-08-27 10:53:35,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:53:35,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-27 10:53:35,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:35,362 INFO L225 Difference]: With dead ends: 31 [2021-08-27 10:53:35,363 INFO L226 Difference]: Without dead ends: 30 [2021-08-27 10:53:35,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:53:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-27 10:53:35,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2021-08-27 10:53:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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 10:53:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-08-27 10:53:35,365 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 9 [2021-08-27 10:53:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:35,365 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-08-27 10:53:35,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:53:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-08-27 10:53:35,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 10:53:35,365 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:35,366 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-08-27 10:53:35,385 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 10:53:35,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:35,581 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash -22254369, now seen corresponding path program 1 times [2021-08-27 10:53:35,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:35,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343411917] [2021-08-27 10:53:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:35,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:35,614 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 10:53:35,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:35,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343411917] [2021-08-27 10:53:35,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343411917] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:35,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666705857] [2021-08-27 10:53:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:35,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:35,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:35,625 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 10:53:35,626 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 10:53:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:35,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:53:35,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:35,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666705857] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:53:35,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 10:53:35,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-08-27 10:53:35,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024208951] [2021-08-27 10:53:35,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:53:35,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:35,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:53:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:53:35,747 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:53:35,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:35,786 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2021-08-27 10:53:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 10:53:35,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:53:35,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:35,788 INFO L225 Difference]: With dead ends: 43 [2021-08-27 10:53:35,788 INFO L226 Difference]: Without dead ends: 42 [2021-08-27 10:53:35,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:53:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-27 10:53:35,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 20. [2021-08-27 10:53:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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 10:53:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-08-27 10:53:35,794 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2021-08-27 10:53:35,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:35,795 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-08-27 10:53:35,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:53:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-08-27 10:53:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 10:53:35,795 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:53:35,795 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-08-27 10:53:35,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-27 10:53:36,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:36,014 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:53:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:53:36,015 INFO L82 PathProgramCache]: Analyzing trace with hash -573512235, now seen corresponding path program 1 times [2021-08-27 10:53:36,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:53:36,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103811381] [2021-08-27 10:53:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:36,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:53:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:36,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:53:36,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103811381] [2021-08-27 10:53:36,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103811381] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:36,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701834724] [2021-08-27 10:53:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:53:36,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:36,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:53:36,079 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 10:53:36,080 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 10:53:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:53:36,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 10:53:36,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:53:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:53:36,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701834724] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:53:36,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:53:36,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-08-27 10:53:36,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901318328] [2021-08-27 10:53:36,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 10:53:36,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:53:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 10:53:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:53:36,247 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 10:53:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:53:36,443 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-08-27 10:53:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 10:53:36,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 17 [2021-08-27 10:53:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:53:36,444 INFO L225 Difference]: With dead ends: 35 [2021-08-27 10:53:36,444 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 10:53:36,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2021-08-27 10:53:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 10:53:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 10:53:36,445 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 10:53:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 10:53:36,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-27 10:53:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:53:36,445 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 10:53:36,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 10:53:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 10:53:36,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 10:53:36,447 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:36,447 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:36,447 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:36,447 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:53:36,466 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 10:53:36,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:53:36,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 10:53:36,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:53:36,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:53:36,728 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-08-27 10:53:36,728 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 10:53:36,728 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-08-27 10:53:36,729 INFO L853 garLoopResultBuilder]: At program point L27(lines 14 28) the Hoare annotation is: (or (<= ULTIMATE.start_main_~y1~0 (+ ULTIMATE.start_main_~y2~0 2147483646)) (<= ULTIMATE.start_main_~y1~0 2147483647)) [2021-08-27 10:53:36,730 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-08-27 10:53:36,730 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-08-27 10:53:36,730 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-08-27 10:53:36,730 INFO L857 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-08-27 10:53:36,731 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-08-27 10:53:36,731 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-08-27 10:53:36,731 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 10:53:36,731 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 10:53:36,731 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 24) no Hoare annotation was computed. [2021-08-27 10:53:36,736 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 26) no Hoare annotation was computed. [2021-08-27 10:53:36,737 INFO L853 garLoopResultBuilder]: At program point L20-2(lines 19 25) the Hoare annotation is: (and (< 0 ULTIMATE.start_main_~y2~0) (< 0 ULTIMATE.start_main_~y1~0) (<= ULTIMATE.start_main_~y2~0 2147483647) (<= ULTIMATE.start_main_~y1~0 2147483647)) [2021-08-27 10:53:36,737 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 18 26) no Hoare annotation was computed. [2021-08-27 10:53:36,740 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:53:36,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:53:36 BoogieIcfgContainer [2021-08-27 10:53:36,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:53:36,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:53:36,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:53:36,752 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:53:36,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:53:33" (3/4) ... [2021-08-27 10:53:36,755 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 10:53:36,761 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 10:53:36,761 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 10:53:36,781 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:53:36,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:53:36,782 INFO L168 Benchmark]: Toolchain (without parser) took 3559.07 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 40.0 MB in the beginning and 43.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:36,782 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:53:36,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.99 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 31.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:36,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.99 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 44.9 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:36,783 INFO L168 Benchmark]: Boogie Preprocessor took 13.67 ms. Allocated memory is still 60.8 MB. Free memory was 44.9 MB in the beginning and 44.0 MB in the end (delta: 871.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:53:36,783 INFO L168 Benchmark]: RCFGBuilder took 238.48 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 34.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:36,784 INFO L168 Benchmark]: TraceAbstraction took 3097.39 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 33.7 MB in the beginning and 45.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:36,784 INFO L168 Benchmark]: Witness Printer took 29.28 ms. Allocated memory is still 92.3 MB. Free memory was 45.6 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:53:36,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 144.99 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 31.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.99 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 44.9 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.67 ms. Allocated memory is still 60.8 MB. Free memory was 44.9 MB in the beginning and 44.0 MB in the end (delta: 871.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 238.48 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 34.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3097.39 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 33.7 MB in the beginning and 45.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 29.28 ms. Allocated memory is still 92.3 MB. Free memory was 45.6 MB in the beginning and 43.5 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: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: 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, 16 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3043.0ms, OverallIterations: 7, TraceHistogramMax: 4, EmptinessCheckTime: 7.8ms, AutomataDifference: 635.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 70.4ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 172 SDslu, 6 SDs, 0 SdLazy, 357 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 260.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 378.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 45.9ms AutomataMinimizationTime, 7 MinimizatonAttempts, 79 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 22 HoareAnnotationTreeSize, 2 FomulaSimplifications, 350 FormulaSimplificationTreeSizeReduction, 32.2ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 66 FormulaSimplificationTreeSizeReductionInter, 33.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 11.7ms SsaConstructionTime, 73.1ms SatisfiabilityAnalysisTime, 788.7ms InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 613 SizeOfPredicates, 0 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 12/50 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: y1 <= y2 + 2147483646 || y1 <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((0 < y2 && 0 < y1) && y2 <= 2147483647) && y1 <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-08-27 10:53:36,809 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...