./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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-speedpldi4.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 f560e32afd5a40adf4a98abbf810cb377947c4f4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:04:06,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:04:06,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:04:06,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:04:06,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:04:06,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:04:06,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:04:06,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:04:06,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:04:06,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:04:06,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:04:06,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:04:06,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:04:06,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:04:06,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:04:06,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:04:06,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:04:06,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:04:06,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:04:06,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:04:06,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:04:06,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:04:06,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:04:06,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:04:06,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:04:06,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:04:06,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:04:06,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:04:06,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:04:06,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:04:06,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:04:06,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:04:06,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:04:06,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:04:06,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:04:06,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:04:06,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:04:06,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:04:06,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:04:06,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:04:06,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:04:06,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-26 04:04:06,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:04:06,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:04:06,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:04:06,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:04:06,947 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:04:06,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:04:06,948 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:04:06,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:04:06,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:04:06,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:04:06,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:04:06,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:04:06,951 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:04:06,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:04:06,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:04:06,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:04:06,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:04:06,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:04:06,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:04:06,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:04:06,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:04:06,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:04:06,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:04:06,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:04:06,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:04:06,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:04:06,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:04:06,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:04:06,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f560e32afd5a40adf4a98abbf810cb377947c4f4 [2020-10-26 04:04:07,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:04:07,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:04:07,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:04:07,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:04:07,453 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:04:07,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2020-10-26 04:04:07,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4be420a/ecce4aa8015d4fef8bcc434252de69f8/FLAG3ecc4113c [2020-10-26 04:04:08,122 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:04:08,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2020-10-26 04:04:08,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4be420a/ecce4aa8015d4fef8bcc434252de69f8/FLAG3ecc4113c [2020-10-26 04:04:08,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4be420a/ecce4aa8015d4fef8bcc434252de69f8 [2020-10-26 04:04:08,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:04:08,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:04:08,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:04:08,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:04:08,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:04:08,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39211e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08, skipping insertion in model container [2020-10-26 04:04:08,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:04:08,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:04:08,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:04:08,797 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:04:08,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:04:08,832 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:04:08,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08 WrapperNode [2020-10-26 04:04:08,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:04:08,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:04:08,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:04:08,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:04:08,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:04:08,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:04:08,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:04:08,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:04:08,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (1/1) ... [2020-10-26 04:04:08,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:04:08,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:04:08,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:04:08,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:04:08,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:04:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:04:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:04:09,196 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:04:09,197 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:04:09,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:04:09 BoogieIcfgContainer [2020-10-26 04:04:09,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:04:09,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:04:09,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:04:09,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:04:09,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:04:08" (1/3) ... [2020-10-26 04:04:09,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6c9e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:04:09, skipping insertion in model container [2020-10-26 04:04:09,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:04:08" (2/3) ... [2020-10-26 04:04:09,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6c9e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:04:09, skipping insertion in model container [2020-10-26 04:04:09,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:04:09" (3/3) ... [2020-10-26 04:04:09,209 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2020-10-26 04:04:09,222 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:04:09,227 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-26 04:04:09,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 04:04:09,272 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:04:09,273 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:04:09,273 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:04:09,273 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:04:09,273 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:04:09,274 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:04:09,274 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:04:09,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:04:09,290 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-26 04:04:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-26 04:04:09,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:09,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-26 04:04:09,299 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:09,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:09,306 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2020-10-26 04:04:09,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:09,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463750336] [2020-10-26 04:04:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:09,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463750336] [2020-10-26 04:04:09,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:04:09,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:04:09,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240578143] [2020-10-26 04:04:09,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:04:09,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:09,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:04:09,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:04:09,534 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-10-26 04:04:09,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:09,688 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-26 04:04:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:04:09,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-26 04:04:09,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:09,702 INFO L225 Difference]: With dead ends: 33 [2020-10-26 04:04:09,702 INFO L226 Difference]: Without dead ends: 20 [2020-10-26 04:04:09,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:04:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-26 04:04:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2020-10-26 04:04:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-26 04:04:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-10-26 04:04:09,747 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 5 [2020-10-26 04:04:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:09,747 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-10-26 04:04:09,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:04:09,748 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-10-26 04:04:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-26 04:04:09,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:09,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-26 04:04:09,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:04:09,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:09,751 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-10-26 04:04:09,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:09,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096542225] [2020-10-26 04:04:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:09,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096542225] [2020-10-26 04:04:09,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:04:09,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:04:09,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876423549] [2020-10-26 04:04:09,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:04:09,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:09,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:04:09,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:04:09,800 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-10-26 04:04:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:09,883 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2020-10-26 04:04:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:04:09,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-26 04:04:09,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:09,885 INFO L225 Difference]: With dead ends: 21 [2020-10-26 04:04:09,885 INFO L226 Difference]: Without dead ends: 20 [2020-10-26 04:04:09,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:04:09,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-26 04:04:09,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-26 04:04:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-26 04:04:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-10-26 04:04:09,892 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 5 [2020-10-26 04:04:09,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:09,893 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-10-26 04:04:09,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:04:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-10-26 04:04:09,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 04:04:09,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:09,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:04:09,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 04:04:09,895 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:09,896 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2020-10-26 04:04:09,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:09,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698049861] [2020-10-26 04:04:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:09,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698049861] [2020-10-26 04:04:09,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:04:09,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:04:09,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310806252] [2020-10-26 04:04:09,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:04:09,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:09,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:04:09,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:04:09,929 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2020-10-26 04:04:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:09,970 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-10-26 04:04:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:04:09,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-26 04:04:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:09,972 INFO L225 Difference]: With dead ends: 20 [2020-10-26 04:04:09,972 INFO L226 Difference]: Without dead ends: 19 [2020-10-26 04:04:09,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:04:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-26 04:04:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-26 04:04:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-26 04:04:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-26 04:04:09,979 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 6 [2020-10-26 04:04:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:09,979 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-26 04:04:09,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:04:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-10-26 04:04:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 04:04:09,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:09,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:04:09,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 04:04:09,981 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:09,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash 920236110, now seen corresponding path program 1 times [2020-10-26 04:04:09,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:09,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644630502] [2020-10-26 04:04:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:10,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644630502] [2020-10-26 04:04:10,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:04:10,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:04:10,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213624363] [2020-10-26 04:04:10,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:04:10,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:10,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:04:10,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:04:10,012 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 3 states. [2020-10-26 04:04:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:10,053 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2020-10-26 04:04:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:04:10,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-26 04:04:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:10,055 INFO L225 Difference]: With dead ends: 31 [2020-10-26 04:04:10,056 INFO L226 Difference]: Without dead ends: 15 [2020-10-26 04:04:10,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:04:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-26 04:04:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-26 04:04:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-26 04:04:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-10-26 04:04:10,062 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2020-10-26 04:04:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:10,062 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-10-26 04:04:10,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:04:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-10-26 04:04:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 04:04:10,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:04:10,064 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:04:10,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 04:04:10,064 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:04:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:04:10,065 INFO L82 PathProgramCache]: Analyzing trace with hash -22254561, now seen corresponding path program 1 times [2020-10-26 04:04:10,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:04:10,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541999922] [2020-10-26 04:04:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:04:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:10,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541999922] [2020-10-26 04:04:10,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530769370] [2020-10-26 04:04:10,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:04:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:04:10,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 04:04:10,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:04:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:04:10,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:04:10,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-10-26 04:04:10,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538031707] [2020-10-26 04:04:10,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 04:04:10,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:04:10,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 04:04:10,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:04:10,287 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2020-10-26 04:04:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:04:10,391 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-10-26 04:04:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 04:04:10,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-26 04:04:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:04:10,392 INFO L225 Difference]: With dead ends: 17 [2020-10-26 04:04:10,392 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 04:04:10,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 04:04:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 04:04:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 04:04:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 04:04:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 04:04:10,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-26 04:04:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:04:10,395 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:04:10,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 04:04:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:04:10,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 04:04:10,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:04:10,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-26 04:04:10,717 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-10-26 04:04:10,717 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-26 04:04:10,717 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-10-26 04:04:10,718 INFO L270 CegarLoopResult]: At program point L27(lines 13 28) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2020-10-26 04:04:10,718 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-26 04:04:10,718 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-26 04:04:10,718 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-26 04:04:10,718 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-10-26 04:04:10,719 INFO L274 CegarLoopResult]: For program point L17(lines 17 26) no Hoare annotation was computed. [2020-10-26 04:04:10,719 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 26) no Hoare annotation was computed. [2020-10-26 04:04:10,719 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-10-26 04:04:10,719 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-10-26 04:04:10,719 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-26 04:04:10,719 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-26 04:04:10,719 INFO L274 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-10-26 04:04:10,720 INFO L270 CegarLoopResult]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse0 (< 0 ULTIMATE.start_main_~m~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and .cse0 (<= ULTIMATE.start_main_~i~0 2147483646) .cse1) (and .cse0 (<= ULTIMATE.start_main_~i~0 2147483647) .cse1 (<= ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~i~0)))) [2020-10-26 04:04:10,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:04:10 BoogieIcfgContainer [2020-10-26 04:04:10,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:04:10,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:04:10,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:04:10,741 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:04:10,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:04:09" (3/4) ... [2020-10-26 04:04:10,746 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 04:04:10,761 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-26 04:04:10,761 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-26 04:04:10,807 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:04:10,807 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:04:10,810 INFO L168 Benchmark]: Toolchain (without parser) took 2279.78 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.0 MB in the beginning and 35.7 MB in the end (delta: -10.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:10,810 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 29.6 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:04:10,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.37 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 27.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:10,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.93 ms. Allocated memory is still 48.2 MB. Free memory was 27.4 MB in the beginning and 26.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:04:10,812 INFO L168 Benchmark]: Boogie Preprocessor took 25.86 ms. Allocated memory is still 48.2 MB. Free memory was 26.1 MB in the beginning and 25.2 MB in the end (delta: 849.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:04:10,813 INFO L168 Benchmark]: RCFGBuilder took 296.41 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 38.0 MB in the end (delta: -12.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:10,814 INFO L168 Benchmark]: TraceAbstraction took 1539.37 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 38.4 MB in the end (delta: -892.6 kB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:10,815 INFO L168 Benchmark]: Witness Printer took 66.61 ms. Allocated memory is still 58.7 MB. Free memory was 38.4 MB in the beginning and 35.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:04:10,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 29.6 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.37 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 27.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.93 ms. Allocated memory is still 48.2 MB. Free memory was 27.4 MB in the beginning and 26.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.86 ms. Allocated memory is still 48.2 MB. Free memory was 26.1 MB in the beginning and 25.2 MB in the end (delta: 849.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 296.41 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 38.0 MB in the end (delta: -12.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1539.37 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 38.4 MB in the end (delta: -892.6 kB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * Witness Printer took 66.61 ms. Allocated memory is still 58.7 MB. Free memory was 38.4 MB in the beginning and 35.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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: 21]: 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: 21]: 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: n <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((0 < m && i <= 2147483646) && n <= 2147483647) || (((0 < m && i <= 2147483647) && n <= 2147483647) && m <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 78 SDslu, 3 SDs, 0 SdLazy, 85 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 27 HoareAnnotationTreeSize, 2 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 796 SizeOfPredicates, 2 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...