./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 9a8b2e8d 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_1.3.100.v20150511-1540.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 0.1.25-9a8b2e8 [2020-10-20 06:23:58,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:23:58,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:23:58,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:23:58,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:23:58,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:23:58,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:23:58,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:23:58,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:23:58,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:23:58,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:23:58,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:23:58,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:23:58,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:23:58,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:23:58,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:23:58,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:23:58,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:23:58,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:23:58,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:23:58,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:23:58,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:23:58,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:23:58,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:23:58,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:23:58,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:23:58,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:23:58,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:23:58,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:23:58,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:23:58,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:23:58,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:23:58,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:23:58,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:23:58,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:23:58,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:23:58,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:23:58,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:23:58,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:23:58,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:23:58,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:23:58,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:23:58,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:23:58,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:23:58,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:23:58,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:23:58,577 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:23:58,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:23:58,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:23:58,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:23:58,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:23:58,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:23:58,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:23:58,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:23:58,579 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:23:58,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:23:58,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:23:58,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:23:58,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:23:58,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:23:58,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:23:58,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:23:58,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:23:58,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:23:58,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:23:58,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:23:58,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:23:58,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:23:58,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:23:58,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:23:58,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 [2020-10-20 06:23:58,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:23:58,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:23:58,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:23:58,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:23:58,806 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:23:58,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2020-10-20 06:23:58,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a673ea429/6d36586efe3045949c066aafc85db40b/FLAG2426f237f [2020-10-20 06:23:59,276 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:23:59,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2020-10-20 06:23:59,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a673ea429/6d36586efe3045949c066aafc85db40b/FLAG2426f237f [2020-10-20 06:23:59,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a673ea429/6d36586efe3045949c066aafc85db40b [2020-10-20 06:23:59,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:23:59,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:23:59,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:23:59,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:23:59,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:23:59,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:23:59" (1/1) ... [2020-10-20 06:23:59,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d38ae61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:59, skipping insertion in model container [2020-10-20 06:23:59,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:23:59" (1/1) ... [2020-10-20 06:23:59,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:23:59,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:23:59,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:24:00,005 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:24:00,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:24:00,042 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:24:00,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00 WrapperNode [2020-10-20 06:24:00,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:24:00,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:24:00,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:24:00,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:24:00,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (1/1) ... [2020-10-20 06:24:00,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (1/1) ... [2020-10-20 06:24:00,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:24:00,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:24:00,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:24:00,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:24:00,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (1/1) ... [2020-10-20 06:24:00,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (1/1) ... [2020-10-20 06:24:00,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (1/1) ... [2020-10-20 06:24:00,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (1/1) ... [2020-10-20 06:24:00,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (1/1) ... [2020-10-20 06:24:00,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (1/1) ... [2020-10-20 06:24:00,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (1/1) ... [2020-10-20 06:24:00,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:24:00,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:24:00,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:24:00,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:24:00,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:24:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:24:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:24:00,347 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:24:00,348 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:24:00,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:24:00 BoogieIcfgContainer [2020-10-20 06:24:00,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:24:00,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:24:00,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:24:00,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:24:00,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:23:59" (1/3) ... [2020-10-20 06:24:00,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720c245f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:24:00, skipping insertion in model container [2020-10-20 06:24:00,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:00" (2/3) ... [2020-10-20 06:24:00,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720c245f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:24:00, skipping insertion in model container [2020-10-20 06:24:00,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:24:00" (3/3) ... [2020-10-20 06:24:00,365 INFO L111 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction.c [2020-10-20 06:24:00,376 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:24:00,384 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:24:00,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:24:00,423 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:24:00,423 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:24:00,423 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:24:00,423 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:24:00,424 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:24:00,424 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:24:00,424 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:24:00,424 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:24:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 06:24:00,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-20 06:24:00,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:00,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-20 06:24:00,448 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:00,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:00,454 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-20 06:24:00,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:00,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732605005] [2020-10-20 06:24:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:00,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732605005] [2020-10-20 06:24:00,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:24:00,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 06:24:00,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025616573] [2020-10-20 06:24:00,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:24:00,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:24:00,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:24:00,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:24:00,652 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-10-20 06:24:00,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:24:00,789 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-10-20 06:24:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:24:00,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-20 06:24:00,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:24:00,801 INFO L225 Difference]: With dead ends: 26 [2020-10-20 06:24:00,802 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 06:24:00,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:24:00,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 06:24:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-10-20 06:24:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 06:24:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-20 06:24:00,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2020-10-20 06:24:00,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:24:00,838 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-20 06:24:00,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:24:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-20 06:24:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:24:00,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:00,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:24:00,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:24:00,840 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:00,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:00,841 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-10-20 06:24:00,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:00,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32753735] [2020-10-20 06:24:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:00,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32753735] [2020-10-20 06:24:00,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:24:00,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:24:00,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211896649] [2020-10-20 06:24:00,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:24:00,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:24:00,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:24:00,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:24:00,877 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-10-20 06:24:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:24:00,937 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-10-20 06:24:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:24:00,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-10-20 06:24:00,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:24:00,939 INFO L225 Difference]: With dead ends: 17 [2020-10-20 06:24:00,939 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 06:24:00,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:24:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 06:24:00,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-10-20 06:24:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 06:24:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-20 06:24:00,945 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2020-10-20 06:24:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:24:00,945 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-20 06:24:00,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:24:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-20 06:24:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:24:00,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:00,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:24:00,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:24:00,947 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:00,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:00,947 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-10-20 06:24:00,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:00,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989222188] [2020-10-20 06:24:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:00,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989222188] [2020-10-20 06:24:00,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:24:00,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 06:24:00,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194257442] [2020-10-20 06:24:00,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:24:00,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:24:00,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:24:00,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:24:00,975 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2020-10-20 06:24:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:24:00,998 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-20 06:24:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:24:00,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 06:24:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:24:01,002 INFO L225 Difference]: With dead ends: 14 [2020-10-20 06:24:01,002 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 06:24:01,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:24:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 06:24:01,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-20 06:24:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 06:24:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-20 06:24:01,007 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2020-10-20 06:24:01,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:24:01,007 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-20 06:24:01,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:24:01,007 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-20 06:24:01,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:24:01,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:01,008 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:24:01,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:24:01,008 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:01,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2020-10-20 06:24:01,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:01,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883051224] [2020-10-20 06:24:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:01,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883051224] [2020-10-20 06:24:01,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71119298] [2020-10-20 06:24:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-20 06:24:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:01,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:24:01,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:24:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:01,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:24:01,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2020-10-20 06:24:01,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294332142] [2020-10-20 06:24:01,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:24:01,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:24:01,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:24:01,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:24:01,242 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-10-20 06:24:01,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:24:01,306 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-20 06:24:01,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:24:01,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-20 06:24:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:24:01,308 INFO L225 Difference]: With dead ends: 14 [2020-10-20 06:24:01,308 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 06:24:01,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:24:01,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 06:24:01,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-10-20 06:24:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 06:24:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-20 06:24:01,312 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2020-10-20 06:24:01,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:24:01,313 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-20 06:24:01,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:24:01,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-20 06:24:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:24:01,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:01,314 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-20 06:24:01,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:01,525 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:01,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:01,526 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2020-10-20 06:24:01,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:01,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185246123] [2020-10-20 06:24:01,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:01,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185246123] [2020-10-20 06:24:01,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440003920] [2020-10-20 06:24:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-20 06:24:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:01,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:24:01,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:24:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:01,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:24:01,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-10-20 06:24:01,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230224211] [2020-10-20 06:24:01,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:24:01,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:24:01,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:24:01,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:24:01,639 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2020-10-20 06:24:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:24:01,724 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-20 06:24:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:24:01,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-20 06:24:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:24:01,726 INFO L225 Difference]: With dead ends: 20 [2020-10-20 06:24:01,726 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 06:24:01,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:24:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 06:24:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-20 06:24:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 06:24:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-20 06:24:01,731 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2020-10-20 06:24:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:24:01,731 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-20 06:24:01,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:24:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-20 06:24:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:24:01,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:01,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1] [2020-10-20 06:24:01,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:01,940 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:01,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:01,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1635256875, now seen corresponding path program 2 times [2020-10-20 06:24:01,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:01,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540395053] [2020-10-20 06:24:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:01,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540395053] [2020-10-20 06:24:01,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506703325] [2020-10-20 06:24:01,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:02,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:24:02,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:24:02,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:24:02,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:24:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:02,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:24:02,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-20 06:24:02,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868488121] [2020-10-20 06:24:02,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:24:02,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:24:02,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:24:02,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:24:02,056 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 7 states. [2020-10-20 06:24:02,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:24:02,173 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-20 06:24:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:24:02,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-20 06:24:02,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:24:02,174 INFO L225 Difference]: With dead ends: 25 [2020-10-20 06:24:02,174 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 06:24:02,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:24:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 06:24:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-20 06:24:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 06:24:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-20 06:24:02,185 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 14 [2020-10-20 06:24:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:24:02,185 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-20 06:24:02,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:24:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-20 06:24:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:24:02,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:02,186 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1] [2020-10-20 06:24:02,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:02,397 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:02,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:02,398 INFO L82 PathProgramCache]: Analyzing trace with hash 637353757, now seen corresponding path program 3 times [2020-10-20 06:24:02,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:02,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404779513] [2020-10-20 06:24:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:02,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404779513] [2020-10-20 06:24:02,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665572414] [2020-10-20 06:24:02,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:02,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 06:24:02,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:24:02,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:24:02,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:24:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-20 06:24:02,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:24:02,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2020-10-20 06:24:02,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98590163] [2020-10-20 06:24:02,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:24:02,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:24:02,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:24:02,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:24:02,542 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 5 states. [2020-10-20 06:24:02,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:24:02,585 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-20 06:24:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:24:02,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-20 06:24:02,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:24:02,587 INFO L225 Difference]: With dead ends: 22 [2020-10-20 06:24:02,587 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 06:24:02,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:24:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 06:24:02,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-20 06:24:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:24:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-20 06:24:02,592 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2020-10-20 06:24:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:24:02,593 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-20 06:24:02,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:24:02,593 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-20 06:24:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:24:02,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:02,595 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2020-10-20 06:24:02,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:02,805 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:02,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:02,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 1 times [2020-10-20 06:24:02,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:02,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124588889] [2020-10-20 06:24:02,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:02,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124588889] [2020-10-20 06:24:02,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365502601] [2020-10-20 06:24:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-20 06:24:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:02,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:24:02,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:02,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:24:02,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-20 06:24:02,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764041931] [2020-10-20 06:24:02,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:24:02,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:24:02,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:24:02,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:24:02,895 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2020-10-20 06:24:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:24:02,931 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-20 06:24:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:24:02,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-20 06:24:02,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:24:02,933 INFO L225 Difference]: With dead ends: 28 [2020-10-20 06:24:02,933 INFO L226 Difference]: Without dead ends: 27 [2020-10-20 06:24:02,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:24:02,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-20 06:24:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-20 06:24:02,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 06:24:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-10-20 06:24:02,938 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2020-10-20 06:24:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:24:02,938 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-10-20 06:24:02,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:24:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-10-20 06:24:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:24:02,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:02,939 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-10-20 06:24:03,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:03,151 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:03,153 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2020-10-20 06:24:03,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:03,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336277684] [2020-10-20 06:24:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:03,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336277684] [2020-10-20 06:24:03,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919297683] [2020-10-20 06:24:03,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:03,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:24:03,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:24:03,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:24:03,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:24:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:03,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:24:03,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-20 06:24:03,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386863103] [2020-10-20 06:24:03,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:24:03,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:24:03,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:24:03,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:24:03,282 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 7 states. [2020-10-20 06:24:03,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:24:03,324 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-20 06:24:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:24:03,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-20 06:24:03,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:24:03,331 INFO L225 Difference]: With dead ends: 33 [2020-10-20 06:24:03,331 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 06:24:03,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:24:03,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 06:24:03,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-20 06:24:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 06:24:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-20 06:24:03,340 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-10-20 06:24:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:24:03,341 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-20 06:24:03,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:24:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-20 06:24:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:24:03,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:03,343 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2020-10-20 06:24:03,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:03,545 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:03,546 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 3 times [2020-10-20 06:24:03,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:03,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350675172] [2020-10-20 06:24:03,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:24:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:24:03,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350675172] [2020-10-20 06:24:03,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148050647] [2020-10-20 06:24:03,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:24:03,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-20 06:24:03,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:24:03,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:24:03,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:24:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 06:24:03,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:24:03,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2020-10-20 06:24:03,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040480449] [2020-10-20 06:24:03,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:24:03,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:24:03,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:24:03,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:24:03,829 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 15 states. [2020-10-20 06:24:04,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:24:04,472 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-10-20 06:24:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-20 06:24:04,472 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2020-10-20 06:24:04,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:24:04,473 INFO L225 Difference]: With dead ends: 38 [2020-10-20 06:24:04,473 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:24:04,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2020-10-20 06:24:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:24:04,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:24:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:24:04,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:24:04,477 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-10-20 06:24:04,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:24:04,477 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:24:04,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:24:04,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:24:04,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:24:04,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-20 06:24:04,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:24:04,760 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-20 06:24:04,760 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:24:04,760 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:24:04,761 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 06:24:04,761 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-20 06:24:04,761 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-20 06:24:04,761 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:24:04,761 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:24:04,761 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:24:04,761 INFO L277 CegarLoopResult]: At program point L22(lines 14 23) the Hoare annotation is: true [2020-10-20 06:24:04,762 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-20 06:24:04,762 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-20 06:24:04,762 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 21) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483648) 2) 1)) (<= 2 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 2147483647)) (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 1) (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) 2147483648))) [2020-10-20 06:24:04,762 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2020-10-20 06:24:04,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:24:04 BoogieIcfgContainer [2020-10-20 06:24:04,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:24:04,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:24:04,780 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:24:04,780 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:24:04,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:24:00" (3/4) ... [2020-10-20 06:24:04,785 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:24:04,796 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 06:24:04,797 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:24:04,840 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:24:04,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:24:04,843 INFO L168 Benchmark]: Toolchain (without parser) took 5123.00 ms. Allocated memory was 34.6 MB in the beginning and 57.1 MB in the end (delta: 22.5 MB). Free memory was 6.6 MB in the beginning and 24.9 MB in the end (delta: -18.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:04,843 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 34.6 MB. Free memory was 12.0 MB in the beginning and 12.0 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:24:04,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.06 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 18.5 MB in the beginning and 28.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:04,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.01 ms. Allocated memory is still 44.6 MB. Free memory was 28.0 MB in the beginning and 26.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:04,845 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 ms. Allocated memory is still 44.6 MB. Free memory was 26.6 MB in the beginning and 25.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:04,846 INFO L168 Benchmark]: RCFGBuilder took 243.35 ms. Allocated memory is still 44.6 MB. Free memory was 25.5 MB in the beginning and 16.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:04,847 INFO L168 Benchmark]: TraceAbstraction took 4423.21 ms. Allocated memory was 45.6 MB in the beginning and 57.1 MB in the end (delta: 11.5 MB). Free memory was 27.1 MB in the beginning and 27.3 MB in the end (delta: -170.2 kB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:04,848 INFO L168 Benchmark]: Witness Printer took 59.91 ms. Allocated memory is still 57.1 MB. Free memory was 27.3 MB in the beginning and 24.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:04,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 34.6 MB. Free memory was 12.0 MB in the beginning and 12.0 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 308.06 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 18.5 MB in the beginning and 28.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 36.01 ms. Allocated memory is still 44.6 MB. Free memory was 28.0 MB in the beginning and 26.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.37 ms. Allocated memory is still 44.6 MB. Free memory was 26.6 MB in the beginning and 25.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 243.35 ms. Allocated memory is still 44.6 MB. Free memory was 25.5 MB in the beginning and 16.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4423.21 ms. Allocated memory was 45.6 MB in the beginning and 57.1 MB in the end (delta: 11.5 MB). Free memory was 27.1 MB in the beginning and 27.3 MB in the end (delta: -170.2 kB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. * Witness Printer took 59.91 ms. Allocated memory is still 57.1 MB. Free memory was 27.3 MB in the beginning and 24.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: 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: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((y <= (x * -1 + 2147483648) / 2 + 1 && 2 <= y) && y <= 2147483647) || ((1 <= y && y <= 1) && x + y <= 2147483648) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 97 SDslu, 19 SDs, 0 SdLazy, 252 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 32 HoareAnnotationTreeSize, 2 FomulaSimplifications, 180 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 263 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 14870 SizeOfPredicates, 2 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...