./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2-TACAS2011-Fig3.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/PodelskiRybalchenko-LICS2004-Fig2-TACAS2011-Fig3.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 588716e5dd1c3d01882e1bf0a06b3529d9c3d880 ........................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:25:36,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:25:36,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:25:36,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:25:36,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:25:36,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:25:36,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:25:36,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:25:36,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:25:36,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:25:36,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:25:36,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:25:36,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:25:36,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:25:36,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:25:36,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:25:36,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:25:36,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:25:36,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:25:36,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:25:36,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:25:36,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:25:36,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:25:36,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:25:36,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:25:36,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:25:36,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:25:36,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:25:36,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:25:36,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:25:36,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:25:36,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:25:36,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:25:36,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:25:36,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:25:36,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:25:36,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:25:36,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:25:36,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:25:36,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:25:36,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:25:36,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:25:36,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:25:36,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:25:36,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:25:36,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:25:36,604 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:25:36,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:25:36,605 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:25:36,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:25:36,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:25:36,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:25:36,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:25:36,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:25:36,606 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:25:36,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:25:36,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:25:36,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:25:36,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:25:36,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:25:36,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:25:36,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:25:36,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:25:36,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:25:36,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:25:36,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:25:36,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:25:36,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:25:36,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:25:36,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:25:36,609 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 -> 588716e5dd1c3d01882e1bf0a06b3529d9c3d880 [2020-10-20 06:25:36,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:25:36,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:25:36,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:25:36,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:25:36,846 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:25:36,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2-TACAS2011-Fig3.c [2020-10-20 06:25:36,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec68a9818/b03caf64fef349b9a76288985b797f00/FLAG9c6208aa8 [2020-10-20 06:25:37,393 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:25:37,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2-TACAS2011-Fig3.c [2020-10-20 06:25:37,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec68a9818/b03caf64fef349b9a76288985b797f00/FLAG9c6208aa8 [2020-10-20 06:25:37,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec68a9818/b03caf64fef349b9a76288985b797f00 [2020-10-20 06:25:37,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:25:37,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:25:37,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:37,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:25:37,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:25:37,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:37" (1/1) ... [2020-10-20 06:25:37,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31327ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:37, skipping insertion in model container [2020-10-20 06:25:37,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:37" (1/1) ... [2020-10-20 06:25:37,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:25:37,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:25:38,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:38,066 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:25:38,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:38,099 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:25:38,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38 WrapperNode [2020-10-20 06:25:38,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:38,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:38,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:25:38,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:25:38,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (1/1) ... [2020-10-20 06:25:38,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (1/1) ... [2020-10-20 06:25:38,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:38,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:25:38,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:25:38,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:25:38,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (1/1) ... [2020-10-20 06:25:38,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (1/1) ... [2020-10-20 06:25:38,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (1/1) ... [2020-10-20 06:25:38,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (1/1) ... [2020-10-20 06:25:38,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (1/1) ... [2020-10-20 06:25:38,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (1/1) ... [2020-10-20 06:25:38,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (1/1) ... [2020-10-20 06:25:38,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:25:38,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:25:38,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:25:38,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:25:38,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (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 06:25:38,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:25:38,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:25:38,501 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:25:38,501 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:25:38,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:38 BoogieIcfgContainer [2020-10-20 06:25:38,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:25:38,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:25:38,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:25:38,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:25:38,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:25:37" (1/3) ... [2020-10-20 06:25:38,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcc1edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:38, skipping insertion in model container [2020-10-20 06:25:38,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:38" (2/3) ... [2020-10-20 06:25:38,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcc1edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:38, skipping insertion in model container [2020-10-20 06:25:38,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:38" (3/3) ... [2020-10-20 06:25:38,513 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig2-TACAS2011-Fig3.c [2020-10-20 06:25:38,525 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:25:38,533 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 06:25:38,558 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 06:25:38,623 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:25:38,623 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:25:38,623 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:25:38,623 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:25:38,624 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:25:38,624 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:25:38,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:25:38,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:25:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 06:25:38,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:25:38,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:38,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:25:38,676 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:38,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:38,683 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-10-20 06:25:38,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:38,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251501563] [2020-10-20 06:25:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:38,874 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 06:25:38,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251501563] [2020-10-20 06:25:38,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:38,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:25:38,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835154471] [2020-10-20 06:25:38,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:25:38,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:38,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:25:38,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:25:38,895 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2020-10-20 06:25:38,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:38,976 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-20 06:25:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:25:38,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-10-20 06:25:38,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:38,989 INFO L225 Difference]: With dead ends: 46 [2020-10-20 06:25:38,989 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 06:25:38,993 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 06:25:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 06:25:39,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2020-10-20 06:25:39,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:25:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-20 06:25:39,027 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 4 [2020-10-20 06:25:39,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:39,027 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-20 06:25:39,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:25:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-20 06:25:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:25:39,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:39,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:25:39,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:25:39,029 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:39,029 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-10-20 06:25:39,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:39,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531578543] [2020-10-20 06:25:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:39,076 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 06:25:39,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531578543] [2020-10-20 06:25:39,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:39,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:25:39,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344431294] [2020-10-20 06:25:39,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:25:39,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:39,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:25:39,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:25:39,081 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-10-20 06:25:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:39,141 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-10-20 06:25:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:25:39,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-10-20 06:25:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:39,143 INFO L225 Difference]: With dead ends: 31 [2020-10-20 06:25:39,144 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 06:25:39,145 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 06:25:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 06:25:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2020-10-20 06:25:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 06:25:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-10-20 06:25:39,152 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2020-10-20 06:25:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:39,153 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-10-20 06:25:39,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:25:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-10-20 06:25:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:25:39,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:39,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:25:39,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:25:39,155 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:39,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:39,156 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-10-20 06:25:39,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:39,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686099784] [2020-10-20 06:25:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:39,182 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 06:25:39,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686099784] [2020-10-20 06:25:39,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:39,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:25:39,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253595145] [2020-10-20 06:25:39,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:25:39,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:39,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:25:39,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:25:39,186 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2020-10-20 06:25:39,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:39,228 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-10-20 06:25:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:25:39,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 06:25:39,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:39,230 INFO L225 Difference]: With dead ends: 22 [2020-10-20 06:25:39,230 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 06:25:39,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:25:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 06:25:39,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-20 06:25:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:25:39,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-10-20 06:25:39,236 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 5 [2020-10-20 06:25:39,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:39,237 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-10-20 06:25:39,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:25:39,237 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-10-20 06:25:39,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:25:39,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:39,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:25:39,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:25:39,239 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:39,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:39,240 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-10-20 06:25:39,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:39,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560598786] [2020-10-20 06:25:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:39,264 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 06:25:39,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560598786] [2020-10-20 06:25:39,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:39,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:25:39,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604369379] [2020-10-20 06:25:39,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:25:39,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:39,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:25:39,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:25:39,267 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2020-10-20 06:25:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:39,294 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-10-20 06:25:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:25:39,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 06:25:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:39,296 INFO L225 Difference]: With dead ends: 21 [2020-10-20 06:25:39,296 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 06:25:39,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:25:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 06:25:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-20 06:25:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:25:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-10-20 06:25:39,302 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 5 [2020-10-20 06:25:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:39,303 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-10-20 06:25:39,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:25:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-10-20 06:25:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:25:39,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:39,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:25:39,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:25:39,305 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:39,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:39,306 INFO L82 PathProgramCache]: Analyzing trace with hash 925954989, now seen corresponding path program 1 times [2020-10-20 06:25:39,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:39,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019202898] [2020-10-20 06:25:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:25:39,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:25:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:25:39,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:25:39,352 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:25:39,352 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:25:39,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:25:39,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:25:39 BoogieIcfgContainer [2020-10-20 06:25:39,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:25:39,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:25:39,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:25:39,375 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:25:39,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:38" (3/4) ... [2020-10-20 06:25:39,379 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:25:39,434 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:25:39,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:25:39,438 INFO L168 Benchmark]: Toolchain (without parser) took 1607.25 ms. Allocated memory was 40.4 MB in the beginning and 45.1 MB in the end (delta: 4.7 MB). Free memory was 18.9 MB in the beginning and 21.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:39,439 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 30.9 MB. Free memory was 6.6 MB in the beginning and 6.5 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:25:39,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.55 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 18.0 MB in the beginning and 20.2 MB in the end (delta: -2.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:39,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.89 ms. Allocated memory is still 41.4 MB. Free memory was 20.2 MB in the beginning and 18.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:39,442 INFO L168 Benchmark]: Boogie Preprocessor took 30.21 ms. Allocated memory is still 41.4 MB. Free memory was 18.6 MB in the beginning and 17.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:39,443 INFO L168 Benchmark]: RCFGBuilder took 333.57 ms. Allocated memory was 41.4 MB in the beginning and 42.5 MB in the end (delta: 1.0 MB). Free memory was 17.4 MB in the beginning and 20.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:39,444 INFO L168 Benchmark]: TraceAbstraction took 869.51 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 20.5 MB in the beginning and 23.5 MB in the end (delta: -3.0 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:25:39,445 INFO L168 Benchmark]: Witness Printer took 60.04 ms. Allocated memory is still 45.1 MB. Free memory was 23.5 MB in the beginning and 21.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:39,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 30.9 MB. Free memory was 6.6 MB in the beginning and 6.5 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 266.55 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 18.0 MB in the beginning and 20.2 MB in the end (delta: -2.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 37.89 ms. Allocated memory is still 41.4 MB. Free memory was 20.2 MB in the beginning and 18.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.21 ms. Allocated memory is still 41.4 MB. Free memory was 18.6 MB in the beginning and 17.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 333.57 ms. Allocated memory was 41.4 MB in the beginning and 42.5 MB in the end (delta: 1.0 MB). Free memory was 17.4 MB in the beginning and 20.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 869.51 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 20.5 MB in the beginning and 23.5 MB in the end (delta: -3.0 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 60.04 ms. Allocated memory is still 45.1 MB. Free memory was 23.5 MB in the beginning and 21.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 29]: integer overflow possible integer overflow possible We found a FailurePath: [L18] int x, y, oldx, oldy; [L19] x = __VERIFIER_nondet_int() [L20] y = __VERIFIER_nondet_int() [L21] COND TRUE x > 0 && y > 0 [L22] oldx = x [L23] oldy = y [L24] COND FALSE !(__VERIFIER_nondet_int() != 0) [L28] EXPR oldy - 2 [L28] x = oldy - 2 [L29] oldx + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 71 SDslu, 42 SDs, 0 SdLazy, 48 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...