./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/BradleyMannaSipma-CAV2005-Fig1-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 f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:23:36,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:23:36,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:23:36,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:23:36,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:23:36,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:23:36,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:23:36,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:23:36,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:23:36,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:23:36,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:23:36,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:23:36,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:23:36,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:23:36,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:23:36,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:23:36,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:23:36,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:23:36,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:23:36,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:23:36,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:23:36,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:23:36,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:23:36,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:23:36,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:23:36,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:23:36,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:23:36,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:23:36,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:23:36,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:23:36,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:23:36,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:23:36,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:23:36,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:23:36,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:23:36,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:23:36,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:23:36,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:23:36,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:23:36,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:23:36,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:23:36,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:23:36,147 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:23:36,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:23:36,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:23:36,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:23:36,150 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:23:36,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:23:36,150 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:23:36,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:23:36,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:23:36,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:23:36,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:23:36,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:23:36,152 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:23:36,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:23:36,153 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:23:36,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:23:36,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:23:36,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:23:36,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:23:36,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:23:36,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:23:36,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:23:36,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:23:36,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:23:36,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:23:36,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:23:36,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:23:36,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:23:36,157 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 -> f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 [2019-11-28 20:23:36,515 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:23:36,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:23:36,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:23:36,542 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:23:36,542 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:23:36,543 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2019-11-28 20:23:36,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61315a0c1/c5126bc08233454ab0ac9f02b9c3fdf6/FLAG764542c36 [2019-11-28 20:23:37,053 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:23:37,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2019-11-28 20:23:37,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61315a0c1/c5126bc08233454ab0ac9f02b9c3fdf6/FLAG764542c36 [2019-11-28 20:23:37,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61315a0c1/c5126bc08233454ab0ac9f02b9c3fdf6 [2019-11-28 20:23:37,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:23:37,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:23:37,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:23:37,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:23:37,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:23:37,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ebe8096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37, skipping insertion in model container [2019-11-28 20:23:37,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:23:37,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:23:37,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:23:37,691 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:23:37,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:23:37,726 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:23:37,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37 WrapperNode [2019-11-28 20:23:37,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:23:37,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:23:37,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:23:37,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:23:37,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:23:37,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:23:37,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:23:37,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:23:37,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (1/1) ... [2019-11-28 20:23:37,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:23:37,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:23:37,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:23:37,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:23:37,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (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 [2019-11-28 20:23:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:23:37,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:23:38,080 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:23:38,080 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:23:38,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:23:38 BoogieIcfgContainer [2019-11-28 20:23:38,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:23:38,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:23:38,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:23:38,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:23:38,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:23:37" (1/3) ... [2019-11-28 20:23:38,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4de209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:23:38, skipping insertion in model container [2019-11-28 20:23:38,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:37" (2/3) ... [2019-11-28 20:23:38,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4de209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:23:38, skipping insertion in model container [2019-11-28 20:23:38,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:23:38" (3/3) ... [2019-11-28 20:23:38,091 INFO L109 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified.c [2019-11-28 20:23:38,109 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:23:38,133 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 20:23:38,166 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 20:23:38,199 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:23:38,199 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:23:38,199 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:23:38,199 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:23:38,199 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:23:38,200 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:23:38,200 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:23:38,200 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:23:38,221 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-28 20:23:38,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 20:23:38,225 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:38,226 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 20:23:38,227 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:38,234 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2019-11-28 20:23:38,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:38,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356596249] [2019-11-28 20:23:38,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:38,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356596249] [2019-11-28 20:23:38,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:23:38,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:23:38,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118888073] [2019-11-28 20:23:38,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:23:38,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:38,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:23:38,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:23:38,412 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2019-11-28 20:23:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:38,542 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-11-28 20:23:38,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:23:38,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 20:23:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:38,553 INFO L225 Difference]: With dead ends: 28 [2019-11-28 20:23:38,553 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 20:23:38,556 INFO L630 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 [2019-11-28 20:23:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 20:23:38,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 20:23:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 20:23:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-28 20:23:38,591 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2019-11-28 20:23:38,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:38,592 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 20:23:38,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:23:38,592 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-28 20:23:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 20:23:38,593 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:38,593 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 20:23:38,593 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2019-11-28 20:23:38,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:38,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191248922] [2019-11-28 20:23:38,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:38,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191248922] [2019-11-28 20:23:38,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:23:38,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:23:38,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571564262] [2019-11-28 20:23:38,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:23:38,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:38,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:23:38,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:23:38,633 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-28 20:23:38,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:38,701 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-11-28 20:23:38,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:23:38,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 20:23:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:38,704 INFO L225 Difference]: With dead ends: 16 [2019-11-28 20:23:38,704 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 20:23:38,705 INFO L630 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 [2019-11-28 20:23:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 20:23:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-28 20:23:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 20:23:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-28 20:23:38,714 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2019-11-28 20:23:38,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:38,714 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 20:23:38,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:23:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-28 20:23:38,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:23:38,716 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:38,716 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-28 20:23:38,719 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:38,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:38,719 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2019-11-28 20:23:38,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:38,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889523498] [2019-11-28 20:23:38,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:38,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889523498] [2019-11-28 20:23:38,797 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940219112] [2019-11-28 20:23:38,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:38,835 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:23:38,842 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:38,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:23:38,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2019-11-28 20:23:38,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273437560] [2019-11-28 20:23:38,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:23:38,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:38,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:23:38,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:23:38,913 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2019-11-28 20:23:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:39,011 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-28 20:23:39,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:23:39,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-28 20:23:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:39,013 INFO L225 Difference]: With dead ends: 32 [2019-11-28 20:23:39,013 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 20:23:39,013 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:23:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 20:23:39,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2019-11-28 20:23:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 20:23:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-28 20:23:39,019 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2019-11-28 20:23:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:39,019 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-28 20:23:39,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:23:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-28 20:23:39,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:23:39,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:39,020 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:23:39,224 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:39,225 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:39,226 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2019-11-28 20:23:39,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:39,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131912547] [2019-11-28 20:23:39,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:39,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131912547] [2019-11-28 20:23:39,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223395753] [2019-11-28 20:23:39,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:39,327 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:23:39,329 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:39,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:39,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-11-28 20:23:39,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278739709] [2019-11-28 20:23:39,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:23:39,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:39,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:23:39,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:23:39,383 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 8 states. [2019-11-28 20:23:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:39,635 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2019-11-28 20:23:39,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 20:23:39,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-11-28 20:23:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:39,637 INFO L225 Difference]: With dead ends: 48 [2019-11-28 20:23:39,637 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 20:23:39,638 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2019-11-28 20:23:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 20:23:39,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2019-11-28 20:23:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 20:23:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2019-11-28 20:23:39,647 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 9 [2019-11-28 20:23:39,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:39,647 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2019-11-28 20:23:39,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:23:39,648 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2019-11-28 20:23:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:23:39,648 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:39,649 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:23:39,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:39,858 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:39,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:39,858 INFO L82 PathProgramCache]: Analyzing trace with hash -22254561, now seen corresponding path program 1 times [2019-11-28 20:23:39,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:39,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863292170] [2019-11-28 20:23:39,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:39,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863292170] [2019-11-28 20:23:39,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466162053] [2019-11-28 20:23:39,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:39,987 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:23:39,988 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:40,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:23:40,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2019-11-28 20:23:40,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484724022] [2019-11-28 20:23:40,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:23:40,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:40,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:23:40,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:23:40,026 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 5 states. [2019-11-28 20:23:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:40,067 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2019-11-28 20:23:40,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:23:40,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-28 20:23:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:40,070 INFO L225 Difference]: With dead ends: 31 [2019-11-28 20:23:40,070 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 20:23:40,071 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:23:40,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 20:23:40,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2019-11-28 20:23:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 20:23:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-28 20:23:40,076 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 9 [2019-11-28 20:23:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:40,076 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-28 20:23:40,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:23:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-11-28 20:23:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:23:40,077 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:40,077 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-28 20:23:40,278 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:40,278 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:40,279 INFO L82 PathProgramCache]: Analyzing trace with hash -22254369, now seen corresponding path program 1 times [2019-11-28 20:23:40,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:40,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732149636] [2019-11-28 20:23:40,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:40,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732149636] [2019-11-28 20:23:40,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635947956] [2019-11-28 20:23:40,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:40,357 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:23:40,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:40,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 20:23:40,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2019-11-28 20:23:40,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095172289] [2019-11-28 20:23:40,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:23:40,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:40,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:23:40,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:23:40,397 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 5 states. [2019-11-28 20:23:40,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:40,468 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2019-11-28 20:23:40,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:23:40,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-28 20:23:40,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:40,470 INFO L225 Difference]: With dead ends: 43 [2019-11-28 20:23:40,470 INFO L226 Difference]: Without dead ends: 42 [2019-11-28 20:23:40,470 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:23:40,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-28 20:23:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 20. [2019-11-28 20:23:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 20:23:40,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-28 20:23:40,475 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2019-11-28 20:23:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:40,475 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-28 20:23:40,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:23:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-28 20:23:40,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:23:40,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:40,477 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-28 20:23:40,685 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:40,686 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:40,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:40,686 INFO L82 PathProgramCache]: Analyzing trace with hash -573512235, now seen corresponding path program 1 times [2019-11-28 20:23:40,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:40,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351142803] [2019-11-28 20:23:40,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:40,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351142803] [2019-11-28 20:23:40,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861657009] [2019-11-28 20:23:40,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:40,826 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 20:23:40,827 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:40,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:40,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-28 20:23:40,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330238543] [2019-11-28 20:23:40,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 20:23:40,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:40,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 20:23:40,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:23:40,893 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 10 states. [2019-11-28 20:23:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:41,271 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2019-11-28 20:23:41,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-28 20:23:41,273 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-28 20:23:41,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:41,274 INFO L225 Difference]: With dead ends: 35 [2019-11-28 20:23:41,274 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 20:23:41,275 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2019-11-28 20:23:41,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 20:23:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 20:23:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 20:23:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:23:41,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-28 20:23:41,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:41,276 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:23:41,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 20:23:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:23:41,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 20:23:41,480 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:41,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 20:23:41,605 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-28 20:23:41,605 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 20:23:41,605 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2019-11-28 20:23:41,605 INFO L242 CegarLoopResult]: At program point L29(lines 16 30) the Hoare annotation is: (<= ULTIMATE.start_main_~y1~0 2147483647) [2019-11-28 20:23:41,606 INFO L246 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2019-11-28 20:23:41,606 INFO L246 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-11-28 20:23:41,606 INFO L246 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-28 20:23:41,606 INFO L246 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-28 20:23:41,606 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-28 20:23:41,606 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2019-11-28 20:23:41,607 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 20:23:41,607 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 20:23:41,607 INFO L246 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2019-11-28 20:23:41,607 INFO L246 CegarLoopResult]: For program point L20(lines 20 28) no Hoare annotation was computed. [2019-11-28 20:23:41,607 INFO L242 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~y1~0) (<= ULTIMATE.start_main_~y1~0 2147483647) (<= ULTIMATE.start_main_~y2~0 2147483647) (<= 0 ULTIMATE.start_main_~y2~0)) [2019-11-28 20:23:41,607 INFO L246 CegarLoopResult]: For program point L20-1(lines 20 28) no Hoare annotation was computed. [2019-11-28 20:23:41,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:23:41 BoogieIcfgContainer [2019-11-28 20:23:41,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:23:41,625 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:23:41,625 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:23:41,625 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:23:41,626 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:23:38" (3/4) ... [2019-11-28 20:23:41,629 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 20:23:41,640 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 20:23:41,640 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 20:23:41,686 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:23:41,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:23:41,692 INFO L168 Benchmark]: Toolchain (without parser) took 4239.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 960.4 MB in the beginning and 880.3 MB in the end (delta: 80.1 MB). Peak memory consumption was 215.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:41,693 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:23:41,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.13 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:41,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:41,697 INFO L168 Benchmark]: Boogie Preprocessor took 18.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:41,701 INFO L168 Benchmark]: RCFGBuilder took 251.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:41,702 INFO L168 Benchmark]: TraceAbstraction took 3540.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 886.8 MB in the end (delta: 226.9 MB). Peak memory consumption was 226.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:41,702 INFO L168 Benchmark]: Witness Printer took 61.66 ms. Allocated memory is still 1.2 GB. Free memory was 886.8 MB in the beginning and 880.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:41,707 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.13 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 83.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 251.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3540.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 886.8 MB in the end (delta: 226.9 MB). Peak memory consumption was 226.9 MB. Max. memory is 11.5 GB. * Witness Printer took 61.66 ms. Allocated memory is still 1.2 GB. Free memory was 886.8 MB in the beginning and 880.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: y1 <= 2147483647 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((0 <= y1 && y1 <= 2147483647) && y2 <= 2147483647) && 0 <= y2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 14 SDtfs, 140 SDslu, 3 SDs, 0 SdLazy, 379 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, 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, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 265 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 158 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 6328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 13/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...