./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.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/CookSeeZuleger-TACAS2013-Fig8a-modified.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 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 ................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:25:03,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:25:03,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:25:03,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:25:03,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:25:03,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:25:03,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:25:03,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:25:03,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:25:03,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:25:03,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:25:03,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:25:03,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:25:03,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:25:03,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:25:03,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:25:03,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:25:03,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:25:03,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:25:03,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:25:03,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:25:03,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:25:03,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:25:03,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:25:03,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:25:03,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:25:03,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:25:03,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:25:03,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:25:03,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:25:03,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:25:03,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:25:03,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:25:03,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:25:03,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:25:03,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:25:03,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:25:03,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:25:03,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:25:03,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:25:03,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:25:03,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:25:03,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:25:03,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:25:03,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:25:03,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:25:03,619 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:25:03,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:25:03,619 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:25:03,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:25:03,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:25:03,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:25:03,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:25:03,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:25:03,621 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:25:03,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:25:03,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:25:03,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:25:03,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:25:03,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:25:03,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:25:03,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:25:03,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:25:03,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:25:03,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:25:03,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:25:03,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:25:03,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:25:03,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:25:03,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:25:03,625 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 -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2020-10-20 06:25:03,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:25:03,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:25:03,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:25:03,865 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:25:03,866 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:25:03,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2020-10-20 06:25:03,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16d146cf/29536f42cc9c4de899656ac9e1eadcba/FLAG6e0c51c37 [2020-10-20 06:25:04,402 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:25:04,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2020-10-20 06:25:04,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16d146cf/29536f42cc9c4de899656ac9e1eadcba/FLAG6e0c51c37 [2020-10-20 06:25:04,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16d146cf/29536f42cc9c4de899656ac9e1eadcba [2020-10-20 06:25:04,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:25:04,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:25:04,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:04,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:25:04,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:25:04,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:04" (1/1) ... [2020-10-20 06:25:04,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29625ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:04, skipping insertion in model container [2020-10-20 06:25:04,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:04" (1/1) ... [2020-10-20 06:25:04,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:25:04,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:25:05,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:05,132 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:25:05,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:05,157 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:25:05,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05 WrapperNode [2020-10-20 06:25:05,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:05,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:05,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:25:05,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:25:05,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (1/1) ... [2020-10-20 06:25:05,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (1/1) ... [2020-10-20 06:25:05,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:05,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:25:05,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:25:05,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:25:05,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (1/1) ... [2020-10-20 06:25:05,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (1/1) ... [2020-10-20 06:25:05,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (1/1) ... [2020-10-20 06:25:05,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (1/1) ... [2020-10-20 06:25:05,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (1/1) ... [2020-10-20 06:25:05,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (1/1) ... [2020-10-20 06:25:05,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (1/1) ... [2020-10-20 06:25:05,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:25:05,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:25:05,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:25:05,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:25:05,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (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 06:25:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:25:05,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:25:05,433 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:25:05,434 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:25:05,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:05 BoogieIcfgContainer [2020-10-20 06:25:05,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:25:05,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:25:05,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:25:05,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:25:05,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:25:04" (1/3) ... [2020-10-20 06:25:05,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c68fec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:05, skipping insertion in model container [2020-10-20 06:25:05,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:05" (2/3) ... [2020-10-20 06:25:05,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c68fec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:05, skipping insertion in model container [2020-10-20 06:25:05,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:05" (3/3) ... [2020-10-20 06:25:05,445 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2020-10-20 06:25:05,457 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:25:05,464 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:25:05,476 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:25:05,498 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:25:05,498 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:25:05,498 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:25:05,498 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:25:05,498 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:25:05,498 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:25:05,499 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:25:05,499 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:25:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-20 06:25:05,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:25:05,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:05,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:25:05,519 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:05,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:05,525 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-10-20 06:25:05,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:05,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128490375] [2020-10-20 06:25:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:05,756 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 06:25:05,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128490375] [2020-10-20 06:25:05,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:05,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:25:05,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995929151] [2020-10-20 06:25:05,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:25:05,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:05,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:25:05,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:25:05,808 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2020-10-20 06:25:06,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:06,072 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-20 06:25:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:25:06,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-10-20 06:25:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:06,083 INFO L225 Difference]: With dead ends: 19 [2020-10-20 06:25:06,083 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 06:25:06,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:25:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 06:25:06,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 06:25:06,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 06:25:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-10-20 06:25:06,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-10-20 06:25:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:06,119 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-10-20 06:25:06,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:25:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-10-20 06:25:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:25:06,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:06,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:25:06,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:25:06,121 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:06,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:06,122 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-10-20 06:25:06,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:06,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346481891] [2020-10-20 06:25:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:06,143 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 06:25:06,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346481891] [2020-10-20 06:25:06,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:06,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 06:25:06,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189339429] [2020-10-20 06:25:06,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:25:06,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:06,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:25:06,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:25:06,152 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-10-20 06:25:06,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:06,191 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-10-20 06:25:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:25:06,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-20 06:25:06,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:06,193 INFO L225 Difference]: With dead ends: 16 [2020-10-20 06:25:06,193 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 06:25:06,194 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 06:25:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 06:25:06,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-10-20 06:25:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 06:25:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-10-20 06:25:06,199 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 4 [2020-10-20 06:25:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:06,199 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-10-20 06:25:06,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:25:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-10-20 06:25:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:25:06,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:06,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:25:06,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:25:06,201 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-10-20 06:25:06,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:06,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131231339] [2020-10-20 06:25:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:06,226 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 06:25:06,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131231339] [2020-10-20 06:25:06,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:06,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 06:25:06,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616902559] [2020-10-20 06:25:06,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:25:06,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:06,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:25:06,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:25:06,229 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2020-10-20 06:25:06,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:06,256 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2020-10-20 06:25:06,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:25:06,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 06:25:06,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:06,257 INFO L225 Difference]: With dead ends: 14 [2020-10-20 06:25:06,257 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 06:25:06,258 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 06:25:06,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 06:25:06,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-20 06:25:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 06:25:06,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-10-20 06:25:06,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 5 [2020-10-20 06:25:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:06,263 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-10-20 06:25:06,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:25:06,263 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-10-20 06:25:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:25:06,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:06,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:25:06,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:25:06,264 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:06,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:06,265 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-10-20 06:25:06,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:06,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602745781] [2020-10-20 06:25:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:06,299 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 06:25:06,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602745781] [2020-10-20 06:25:06,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:06,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:25:06,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933667780] [2020-10-20 06:25:06,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:25:06,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:06,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:25:06,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:25:06,301 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 4 states. [2020-10-20 06:25:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:06,343 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2020-10-20 06:25:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:25:06,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-20 06:25:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:06,344 INFO L225 Difference]: With dead ends: 13 [2020-10-20 06:25:06,344 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 06:25:06,345 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 06:25:06,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 06:25:06,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-20 06:25:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 06:25:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-10-20 06:25:06,348 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2020-10-20 06:25:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:06,349 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-10-20 06:25:06,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:25:06,349 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-10-20 06:25:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:25:06,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:06,350 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:06,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:25:06,350 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:06,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:06,351 INFO L82 PathProgramCache]: Analyzing trace with hash 784501120, now seen corresponding path program 1 times [2020-10-20 06:25:06,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:06,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777450226] [2020-10-20 06:25:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:06,381 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 06:25:06,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777450226] [2020-10-20 06:25:06,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:06,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:25:06,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804155872] [2020-10-20 06:25:06,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:25:06,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:06,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:25:06,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:25:06,383 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2020-10-20 06:25:06,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:06,422 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2020-10-20 06:25:06,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:25:06,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 06:25:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:06,423 INFO L225 Difference]: With dead ends: 21 [2020-10-20 06:25:06,423 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:25:06,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:25:06,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:25:06,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:25:06,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:25:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:25:06,425 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-10-20 06:25:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:06,425 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:25:06,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:25:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:25:06,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:25:06,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:25:06,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:25:06,476 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-20 06:25:06,476 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:25:06,476 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-10-20 06:25:06,476 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-20 06:25:06,476 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-10-20 06:25:06,476 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 06:25:06,477 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-20 06:25:06,477 INFO L274 CegarLoopResult]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2020-10-20 06:25:06,477 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-20 06:25:06,477 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-10-20 06:25:06,477 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:25:06,477 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:25:06,478 INFO L270 CegarLoopResult]: At program point L24(lines 13 25) the Hoare annotation is: (<= ULTIMATE.start_main_~K~0 2147483647) [2020-10-20 06:25:06,478 INFO L274 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2020-10-20 06:25:06,478 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (<= 0 (+ ULTIMATE.start_main_~K~0 2147483648)) (<= ULTIMATE.start_main_~K~0 2147483647)) [2020-10-20 06:25:06,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:25:06 BoogieIcfgContainer [2020-10-20 06:25:06,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:25:06,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:25:06,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:25:06,504 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:25:06,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:05" (3/4) ... [2020-10-20 06:25:06,508 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:25:06,520 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 06:25:06,520 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:25:06,568 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:25:06,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:25:06,571 INFO L168 Benchmark]: Toolchain (without parser) took 1734.99 ms. Allocated memory was 35.1 MB in the beginning and 47.2 MB in the end (delta: 12.1 MB). Free memory was 10.9 MB in the beginning and 14.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:06,572 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 33.0 MB. Free memory was 17.1 MB in the beginning and 17.1 MB in the end (delta: 57.8 kB). Peak memory consumption was 57.8 kB. Max. memory is 14.3 GB. [2020-10-20 06:25:06,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.43 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 10.1 MB in the beginning and 27.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:06,574 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.44 ms. Allocated memory is still 43.5 MB. Free memory was 27.2 MB in the beginning and 25.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:06,582 INFO L168 Benchmark]: Boogie Preprocessor took 18.68 ms. Allocated memory is still 43.5 MB. Free memory was 25.7 MB in the beginning and 24.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:06,582 INFO L168 Benchmark]: RCFGBuilder took 231.42 ms. Allocated memory is still 43.5 MB. Free memory was 24.5 MB in the beginning and 25.2 MB in the end (delta: -668.1 kB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:06,583 INFO L168 Benchmark]: TraceAbstraction took 1066.01 ms. Allocated memory was 43.5 MB in the beginning and 47.2 MB in the end (delta: 3.7 MB). Free memory was 24.7 MB in the beginning and 17.2 MB in the end (delta: 7.5 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:06,584 INFO L168 Benchmark]: Witness Printer took 65.31 ms. Allocated memory is still 47.2 MB. Free memory was 17.2 MB in the beginning and 14.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:06,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 33.0 MB. Free memory was 17.1 MB in the beginning and 17.1 MB in the end (delta: 57.8 kB). Peak memory consumption was 57.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 318.43 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 10.1 MB in the beginning and 27.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 26.44 ms. Allocated memory is still 43.5 MB. Free memory was 27.2 MB in the beginning and 25.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.68 ms. Allocated memory is still 43.5 MB. Free memory was 25.7 MB in the beginning and 24.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 231.42 ms. Allocated memory is still 43.5 MB. Free memory was 24.5 MB in the beginning and 25.2 MB in the end (delta: -668.1 kB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1066.01 ms. Allocated memory was 43.5 MB in the beginning and 47.2 MB in the end (delta: 3.7 MB). Free memory was 24.7 MB in the beginning and 17.2 MB in the end (delta: 7.5 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * Witness Printer took 65.31 ms. Allocated memory is still 47.2 MB. Free memory was 17.2 MB in the beginning and 14.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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: 21]: 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: 17]: Loop Invariant Derived loop invariant: ((x <= 2147483647 && 0 <= x + 2147483648) && 0 <= K + 2147483648) && K <= 2147483647 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: K <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 44 SDslu, 3 SDs, 0 SdLazy, 75 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, 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, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 337 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 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...