./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 678e0110 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/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.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 e334e85dd18553afecc96b27cf49a003304cbca8 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:18:03,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:18:03,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:18:03,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:18:03,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:18:03,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:18:03,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:18:03,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:18:03,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:18:03,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:18:03,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:18:03,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:18:03,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:18:03,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:18:03,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:18:03,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:18:03,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:18:03,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:18:03,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:18:03,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:18:03,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:18:03,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:18:03,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:18:03,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:18:03,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:18:03,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:18:03,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:18:03,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:18:03,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:18:03,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:18:03,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:18:03,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:18:03,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:18:03,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:18:03,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:18:03,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:18:03,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:18:03,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:18:03,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:18:03,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:18:03,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:18:03,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-19 22:18:03,926 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:18:03,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:18:03,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:18:03,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:18:03,929 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:18:03,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:18:03,930 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:18:03,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:18:03,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:18:03,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:18:03,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:18:03,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:18:03,931 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-19 22:18:03,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:18:03,932 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:18:03,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:18:03,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:18:03,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:18:03,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:18:03,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:18:03,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:18:03,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:18:03,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:18:03,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:18:03,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:18:03,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:18:03,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:18:03,936 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 -> e334e85dd18553afecc96b27cf49a003304cbca8 [2019-11-19 22:18:04,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:18:04,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:18:04,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:18:04,259 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:18:04,260 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:18:04,260 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-19 22:18:04,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8ac459b/f1d92cd88db049a3aba8312df1ca5c98/FLAGd7ace98ec [2019-11-19 22:18:04,777 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:18:04,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-19 22:18:04,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8ac459b/f1d92cd88db049a3aba8312df1ca5c98/FLAGd7ace98ec [2019-11-19 22:18:05,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8ac459b/f1d92cd88db049a3aba8312df1ca5c98 [2019-11-19 22:18:05,192 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:18:05,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:18:05,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:18:05,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:18:05,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:18:05,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bfeabe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05, skipping insertion in model container [2019-11-19 22:18:05,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,215 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:18:05,233 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:18:05,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:18:05,432 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:18:05,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:18:05,467 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:18:05,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05 WrapperNode [2019-11-19 22:18:05,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:18:05,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:18:05,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:18:05,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:18:05,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:18:05,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:18:05,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:18:05,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:18:05,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (1/1) ... [2019-11-19 22:18:05,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:18:05,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:18:05,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:18:05,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:18:05,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (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 [2019-11-19 22:18:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:18:05,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:18:05,842 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:18:05,842 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-19 22:18:05,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:18:05 BoogieIcfgContainer [2019-11-19 22:18:05,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:18:05,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:18:05,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:18:05,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:18:05,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:18:05" (1/3) ... [2019-11-19 22:18:05,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751603d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:18:05, skipping insertion in model container [2019-11-19 22:18:05,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:05" (2/3) ... [2019-11-19 22:18:05,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751603d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:18:05, skipping insertion in model container [2019-11-19 22:18:05,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:18:05" (3/3) ... [2019-11-19 22:18:05,853 INFO L109 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-19 22:18:05,862 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:18:05,870 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-19 22:18:05,882 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-19 22:18:05,913 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:18:05,913 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:18:05,914 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:18:05,914 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:18:05,914 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:18:05,914 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:18:05,915 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:18:05,915 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:18:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-19 22:18:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-19 22:18:05,942 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:05,944 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-19 22:18:05,944 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:05,955 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2019-11-19 22:18:05,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:05,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107489002] [2019-11-19 22:18:05,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:06,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107489002] [2019-11-19 22:18:06,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:18:06,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 22:18:06,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240935486] [2019-11-19 22:18:06,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:18:06,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:06,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:18:06,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:18:06,190 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-11-19 22:18:06,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:06,284 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-11-19 22:18:06,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:18:06,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-19 22:18:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:06,301 INFO L225 Difference]: With dead ends: 29 [2019-11-19 22:18:06,301 INFO L226 Difference]: Without dead ends: 16 [2019-11-19 22:18:06,305 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:18:06,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-19 22:18:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-19 22:18:06,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-19 22:18:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-19 22:18:06,355 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2019-11-19 22:18:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:06,356 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-19 22:18:06,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:18:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-19 22:18:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-19 22:18:06,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:06,357 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-19 22:18:06,358 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:06,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:06,358 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2019-11-19 22:18:06,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:06,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015103694] [2019-11-19 22:18:06,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:06,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015103694] [2019-11-19 22:18:06,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:18:06,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 22:18:06,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818333115] [2019-11-19 22:18:06,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:18:06,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:06,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:18:06,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:18:06,437 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2019-11-19 22:18:06,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:06,469 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-19 22:18:06,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:18:06,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-19 22:18:06,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:06,472 INFO L225 Difference]: With dead ends: 15 [2019-11-19 22:18:06,472 INFO L226 Difference]: Without dead ends: 14 [2019-11-19 22:18:06,474 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:18:06,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-19 22:18:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-19 22:18:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-19 22:18:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-19 22:18:06,483 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2019-11-19 22:18:06,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:06,483 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-19 22:18:06,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:18:06,483 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-19 22:18:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 22:18:06,484 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:06,484 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:18:06,485 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:06,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:06,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1537636308, now seen corresponding path program 1 times [2019-11-19 22:18:06,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:06,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411065970] [2019-11-19 22:18:06,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:06,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411065970] [2019-11-19 22:18:06,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:18:06,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 22:18:06,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555471492] [2019-11-19 22:18:06,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:18:06,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:06,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:18:06,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:18:06,580 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-19 22:18:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:06,620 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-11-19 22:18:06,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:18:06,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-19 22:18:06,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:06,622 INFO L225 Difference]: With dead ends: 14 [2019-11-19 22:18:06,622 INFO L226 Difference]: Without dead ends: 13 [2019-11-19 22:18:06,622 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 [2019-11-19 22:18:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-19 22:18:06,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-19 22:18:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-19 22:18:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-19 22:18:06,633 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2019-11-19 22:18:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:06,633 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-19 22:18:06,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:18:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-19 22:18:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 22:18:06,643 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:06,643 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:18:06,644 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:06,645 INFO L82 PathProgramCache]: Analyzing trace with hash -422085238, now seen corresponding path program 1 times [2019-11-19 22:18:06,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:06,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238987061] [2019-11-19 22:18:06,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:06,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238987061] [2019-11-19 22:18:06,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:18:06,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 22:18:06,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086260841] [2019-11-19 22:18:06,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:18:06,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:06,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:18:06,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:18:06,699 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-11-19 22:18:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:06,716 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-11-19 22:18:06,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:18:06,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-19 22:18:06,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:06,718 INFO L225 Difference]: With dead ends: 14 [2019-11-19 22:18:06,718 INFO L226 Difference]: Without dead ends: 13 [2019-11-19 22:18:06,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:18:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-19 22:18:06,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-19 22:18:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-19 22:18:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-19 22:18:06,727 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2019-11-19 22:18:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:06,727 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-19 22:18:06,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:18:06,728 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-19 22:18:06,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 22:18:06,729 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:06,729 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:18:06,729 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:06,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1322960227, now seen corresponding path program 1 times [2019-11-19 22:18:06,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:06,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234943101] [2019-11-19 22:18:06,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:06,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234943101] [2019-11-19 22:18:06,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713633399] [2019-11-19 22:18:06,786 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 [2019-11-19 22:18:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:06,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:18:06,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:18:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:06,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:18:06,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-19 22:18:06,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134593238] [2019-11-19 22:18:06,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:18:06,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:06,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:18:06,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:18:06,875 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-11-19 22:18:06,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:06,929 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-19 22:18:06,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:18:06,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-19 22:18:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:06,935 INFO L225 Difference]: With dead ends: 20 [2019-11-19 22:18:06,935 INFO L226 Difference]: Without dead ends: 19 [2019-11-19 22:18:06,936 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:18:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-19 22:18:06,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-19 22:18:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-19 22:18:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-19 22:18:06,943 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2019-11-19 22:18:06,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:06,944 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-19 22:18:06,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:18:06,944 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-19 22:18:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 22:18:06,945 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:18:06,946 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-19 22:18:07,152 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:18:07,153 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:18:07,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1011103644, now seen corresponding path program 2 times [2019-11-19 22:18:07,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:07,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997370468] [2019-11-19 22:18:07,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:07,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997370468] [2019-11-19 22:18:07,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126971170] [2019-11-19 22:18:07,247 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-11-19 22:18:07,280 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-19 22:18:07,280 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:18:07,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:18:07,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:18:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-19 22:18:07,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:18:07,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2] total 6 [2019-11-19 22:18:07,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742492136] [2019-11-19 22:18:07,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 22:18:07,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:18:07,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 22:18:07,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:18:07,303 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 8 states. [2019-11-19 22:18:07,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:18:07,500 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-19 22:18:07,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 22:18:07,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-11-19 22:18:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:18:07,502 INFO L225 Difference]: With dead ends: 29 [2019-11-19 22:18:07,503 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 22:18:07,507 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-11-19 22:18:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 22:18:07,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 22:18:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 22:18:07,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 22:18:07,508 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-19 22:18:07,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:18:07,508 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:18:07,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 22:18:07,509 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:18:07,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 22:18:07,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:18:07,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 22:18:07,754 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-19 22:18:07,755 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 22:18:07,755 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-19 22:18:07,755 INFO L447 ceAbstractionStarter]: At program point L29(lines 13 30) the Hoare annotation is: true [2019-11-19 22:18:07,755 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-19 22:18:07,755 INFO L444 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-19 22:18:07,756 INFO L444 ceAbstractionStarter]: For program point L21(lines 21 26) no Hoare annotation was computed. [2019-11-19 22:18:07,756 INFO L440 ceAbstractionStarter]: At program point L21-2(lines 20 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (<= 0 ULTIMATE.start_main_~v2~0) (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~v1~0 2147483647)) [2019-11-19 22:18:07,756 INFO L444 ceAbstractionStarter]: For program point L17(lines 17 28) no Hoare annotation was computed. [2019-11-19 22:18:07,756 INFO L444 ceAbstractionStarter]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2019-11-19 22:18:07,756 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-19 22:18:07,757 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-19 22:18:07,757 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 22:18:07,757 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 22:18:07,757 INFO L444 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-19 22:18:07,757 INFO L444 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-19 22:18:07,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:18:07 BoogieIcfgContainer [2019-11-19 22:18:07,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:18:07,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:18:07,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:18:07,775 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:18:07,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:18:05" (3/4) ... [2019-11-19 22:18:07,780 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 22:18:07,792 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 22:18:07,792 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-19 22:18:07,841 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 22:18:07,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:18:07,844 INFO L168 Benchmark]: Toolchain (without parser) took 2649.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 957.7 MB in the beginning and 986.9 MB in the end (delta: -29.2 MB). Peak memory consumption was 73.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:07,844 INFO L168 Benchmark]: CDTParser took 0.33 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. [2019-11-19 22:18:07,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.89 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:07,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -150.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:07,847 INFO L168 Benchmark]: Boogie Preprocessor took 26.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:07,848 INFO L168 Benchmark]: RCFGBuilder took 252.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:07,849 INFO L168 Benchmark]: TraceAbstraction took 1928.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 986.9 MB in the end (delta: 92.1 MB). Peak memory consumption was 92.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:07,849 INFO L168 Benchmark]: Witness Printer took 67.32 ms. Allocated memory is still 1.1 GB. Free memory is still 986.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:18:07,853 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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 272.89 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 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 95.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -150.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 252.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1928.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 986.9 MB in the end (delta: 92.1 MB). Peak memory consumption was 92.1 MB. Max. memory is 11.5 GB. * Witness Printer took 67.32 ms. Allocated memory is still 1.1 GB. Free memory is still 986.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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: 22]: 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((n <= 2147483647 && 0 <= v2) && m <= 2147483647) && v1 <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 49 SDslu, 31 SDs, 0 SdLazy, 65 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=5, 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 107 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 82 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2876 SizeOfPredicates, 1 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 10/30 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...