./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/TwoWay.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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-numeric/TwoWay.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 dd635190a9aa277670265f46b90ecce0c321a2a9 ................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: null --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:24:06,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:24:06,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:24:06,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:24:06,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:24:06,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:24:06,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:24:06,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:24:06,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:24:06,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:24:06,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:24:06,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:24:06,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:24:06,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:24:06,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:24:06,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:24:06,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:24:06,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:24:06,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:24:06,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:24:06,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:24:06,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:24:06,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:24:06,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:24:06,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:24:06,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:24:06,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:24:06,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:24:06,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:24:06,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:24:06,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:24:06,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:24:06,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:24:06,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:24:06,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:24:06,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:24:06,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:24:06,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:24:06,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:24:06,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:24:06,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:24:06,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-07-29 01:24:06,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:24:06,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:24:06,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:24:06,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:24:06,376 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:24:06,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:24:06,376 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:24:06,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:24:06,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:24:06,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:24:06,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:24:06,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:24:06,379 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:24:06,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:24:06,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:24:06,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:24:06,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:24:06,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:24:06,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:24:06,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:24:06,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:24:06,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:24:06,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:24:06,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:24:06,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:24:06,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:24:06,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:24:06,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:24:06,384 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 -> dd635190a9aa277670265f46b90ecce0c321a2a9 [2020-07-29 01:24:06,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:24:06,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:24:06,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:24:06,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:24:06,735 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:24:06,736 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/TwoWay.c [2020-07-29 01:24:06,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b43d452/48f48d7ed59d4a3699130999232335f1/FLAG2a09d29f1 [2020-07-29 01:24:07,290 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:24:07,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/TwoWay.c [2020-07-29 01:24:07,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b43d452/48f48d7ed59d4a3699130999232335f1/FLAG2a09d29f1 [2020-07-29 01:24:07,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b43d452/48f48d7ed59d4a3699130999232335f1 [2020-07-29 01:24:07,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:24:07,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:24:07,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:07,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:24:07,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:24:07,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:07,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2cd30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07, skipping insertion in model container [2020-07-29 01:24:07,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:07,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:24:07,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:24:07,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:07,873 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:24:07,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:07,906 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:24:07,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07 WrapperNode [2020-07-29 01:24:07,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:07,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:07,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:24:07,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:24:07,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:07,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:07,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:07,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:24:07,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:24:07,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:24:08,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:08,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:08,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:08,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:08,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:08,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:08,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (1/1) ... [2020-07-29 01:24:08,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:24:08,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:24:08,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:24:08,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:24:08,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (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 [2020-07-29 01:24:08,088 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2020-07-29 01:24:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2020-07-29 01:24:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:24:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:24:08,483 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:24:08,484 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-29 01:24:08,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:08 BoogieIcfgContainer [2020-07-29 01:24:08,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:24:08,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:24:08,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:24:08,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:24:08,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:24:07" (1/3) ... [2020-07-29 01:24:08,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a98e9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:08, skipping insertion in model container [2020-07-29 01:24:08,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:07" (2/3) ... [2020-07-29 01:24:08,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a98e9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:08, skipping insertion in model container [2020-07-29 01:24:08,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:08" (3/3) ... [2020-07-29 01:24:08,503 INFO L109 eAbstractionObserver]: Analyzing ICFG TwoWay.c [2020-07-29 01:24:08,514 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:24:08,521 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-29 01:24:08,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-29 01:24:08,558 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:24:08,558 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:24:08,558 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:24:08,558 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:24:08,558 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:24:08,558 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:24:08,559 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:24:08,559 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:24:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-29 01:24:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-29 01:24:08,586 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:08,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:24:08,592 INFO L427 AbstractCegarLoop]: === Iteration 1 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:08,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939443, now seen corresponding path program 1 times [2020-07-29 01:24:08,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:08,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749857050] [2020-07-29 01:24:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:08,869 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#true} havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~ret6, main_~x~0, main_~y~0, main_~z~0;assume -2147483648 <= main_#t~nondet3 && main_#t~nondet3 <= 2147483647;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; {32#(<= ULTIMATE.start_main_~x~0 2147483647)} is VALID [2020-07-29 01:24:08,871 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#(<= ULTIMATE.start_main_~x~0 2147483647)} assume !(main_~x~0 < 0);assume -2147483648 <= main_#t~nondet4 && main_#t~nondet4 <= 2147483647;main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; {32#(<= ULTIMATE.start_main_~x~0 2147483647)} is VALID [2020-07-29 01:24:08,872 INFO L280 TraceCheckUtils]: 2: Hoare triple {32#(<= ULTIMATE.start_main_~x~0 2147483647)} assume !(main_~y~0 < 0);assume -2147483648 <= main_#t~nondet5 && main_#t~nondet5 <= 2147483647;main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; {32#(<= ULTIMATE.start_main_~x~0 2147483647)} is VALID [2020-07-29 01:24:08,875 INFO L263 TraceCheckUtils]: 3: Hoare triple {32#(<= ULTIMATE.start_main_~x~0 2147483647)} call main_#t~ret6 := twoWay(1, main_~x~0); {33#(<= |twoWay_#in~n| 2147483647)} is VALID [2020-07-29 01:24:08,877 INFO L280 TraceCheckUtils]: 4: Hoare triple {33#(<= |twoWay_#in~n| 2147483647)} ~terminate := #in~terminate;~n := #in~n; {34#(<= twoWay_~n 2147483647)} is VALID [2020-07-29 01:24:08,879 INFO L280 TraceCheckUtils]: 5: Hoare triple {34#(<= twoWay_~n 2147483647)} assume !(~n < 0);~m~0 := ~n; {35#(<= twoWay_~m~0 2147483647)} is VALID [2020-07-29 01:24:08,881 INFO L280 TraceCheckUtils]: 6: Hoare triple {35#(<= twoWay_~m~0 2147483647)} assume 0 != ~terminate;#t~post0 := ~m~0; {36#(<= |twoWay_#t~post0| 2147483647)} is VALID [2020-07-29 01:24:08,882 INFO L280 TraceCheckUtils]: 7: Hoare triple {36#(<= |twoWay_#t~post0| 2147483647)} assume !(#t~post0 - 1 <= 2147483647); {31#false} is VALID [2020-07-29 01:24:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:24:08,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749857050] [2020-07-29 01:24:08,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:08,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-29 01:24:08,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235616468] [2020-07-29 01:24:08,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-07-29 01:24:08,897 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:08,900 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-29 01:24:08,926 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:08,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-29 01:24:08,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:08,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-29 01:24:08,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-29 01:24:08,939 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2020-07-29 01:24:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:18,340 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-07-29 01:24:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-29 01:24:18,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-07-29 01:24:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-29 01:24:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 65 transitions. [2020-07-29 01:24:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-29 01:24:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 65 transitions. [2020-07-29 01:24:18,359 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 65 transitions. [2020-07-29 01:24:18,468 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:18,483 INFO L225 Difference]: With dead ends: 56 [2020-07-29 01:24:18,484 INFO L226 Difference]: Without dead ends: 51 [2020-07-29 01:24:18,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-07-29 01:24:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-29 01:24:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2020-07-29 01:24:18,549 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:18,551 INFO L82 GeneralOperation]: Start isEquivalent. First operand 51 states. Second operand 37 states. [2020-07-29 01:24:18,551 INFO L74 IsIncluded]: Start isIncluded. First operand 51 states. Second operand 37 states. [2020-07-29 01:24:18,552 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 37 states. [2020-07-29 01:24:18,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:18,560 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-29 01:24:18,561 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-07-29 01:24:18,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:18,562 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:18,563 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 51 states. [2020-07-29 01:24:18,563 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 51 states. [2020-07-29 01:24:18,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:18,573 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-29 01:24:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-07-29 01:24:18,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:18,575 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:18,575 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:18,575 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:18,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-29 01:24:18,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2020-07-29 01:24:18,582 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 8 [2020-07-29 01:24:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:18,582 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2020-07-29 01:24:18,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-29 01:24:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2020-07-29 01:24:18,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-29 01:24:18,583 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:18,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:24:18,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:24:18,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:18,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:18,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939635, now seen corresponding path program 1 times [2020-07-29 01:24:18,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:18,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233320959] [2020-07-29 01:24:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:18,635 INFO L280 TraceCheckUtils]: 0: Hoare triple {253#true} havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~ret6, main_~x~0, main_~y~0, main_~z~0;assume -2147483648 <= main_#t~nondet3 && main_#t~nondet3 <= 2147483647;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; {253#true} is VALID [2020-07-29 01:24:18,636 INFO L280 TraceCheckUtils]: 1: Hoare triple {253#true} assume !(main_~x~0 < 0);assume -2147483648 <= main_#t~nondet4 && main_#t~nondet4 <= 2147483647;main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; {253#true} is VALID [2020-07-29 01:24:18,636 INFO L280 TraceCheckUtils]: 2: Hoare triple {253#true} assume !(main_~y~0 < 0);assume -2147483648 <= main_#t~nondet5 && main_#t~nondet5 <= 2147483647;main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; {253#true} is VALID [2020-07-29 01:24:18,638 INFO L263 TraceCheckUtils]: 3: Hoare triple {253#true} call main_#t~ret6 := twoWay(1, main_~x~0); {255#(<= 1 |twoWay_#in~terminate|)} is VALID [2020-07-29 01:24:18,642 INFO L280 TraceCheckUtils]: 4: Hoare triple {255#(<= 1 |twoWay_#in~terminate|)} ~terminate := #in~terminate;~n := #in~n; {256#(<= 1 twoWay_~terminate)} is VALID [2020-07-29 01:24:18,643 INFO L280 TraceCheckUtils]: 5: Hoare triple {256#(<= 1 twoWay_~terminate)} assume !(~n < 0);~m~0 := ~n; {256#(<= 1 twoWay_~terminate)} is VALID [2020-07-29 01:24:18,644 INFO L280 TraceCheckUtils]: 6: Hoare triple {256#(<= 1 twoWay_~terminate)} assume !(0 != ~terminate);#t~post1 := ~m~0; {254#false} is VALID [2020-07-29 01:24:18,645 INFO L280 TraceCheckUtils]: 7: Hoare triple {254#false} assume !(1 + #t~post1 <= 2147483647); {254#false} is VALID [2020-07-29 01:24:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:24:18,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233320959] [2020-07-29 01:24:18,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:18,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-29 01:24:18,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92843423] [2020-07-29 01:24:18,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-29 01:24:18,649 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:18,650 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 01:24:18,661 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:18,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-29 01:24:18,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:18,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-29 01:24:18,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-29 01:24:18,662 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2020-07-29 01:24:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:18,830 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2020-07-29 01:24:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-29 01:24:18,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-29 01:24:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:24:18,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 42 transitions. [2020-07-29 01:24:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:24:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 42 transitions. [2020-07-29 01:24:18,838 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 42 transitions. [2020-07-29 01:24:18,896 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:18,898 INFO L225 Difference]: With dead ends: 45 [2020-07-29 01:24:18,899 INFO L226 Difference]: Without dead ends: 18 [2020-07-29 01:24:18,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-29 01:24:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-29 01:24:18,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-29 01:24:18,921 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:18,921 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-29 01:24:18,921 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-29 01:24:18,921 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-29 01:24:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:18,924 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-29 01:24:18,924 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-29 01:24:18,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:18,925 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:18,926 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-29 01:24:18,926 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-29 01:24:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:18,928 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-29 01:24:18,929 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-29 01:24:18,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:18,930 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:18,930 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:18,930 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:18,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-29 01:24:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-29 01:24:18,933 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2020-07-29 01:24:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:18,933 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-29 01:24:18,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-29 01:24:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-29 01:24:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-29 01:24:18,935 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:18,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:24:18,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:24:18,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:18,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2051452074, now seen corresponding path program 1 times [2020-07-29 01:24:18,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:18,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994147742] [2020-07-29 01:24:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:18,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-29 01:24:18,952 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-29 01:24:18,960 INFO L168 Benchmark]: Toolchain (without parser) took 11298.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 960.2 MB in the beginning and 939.6 MB in the end (delta: 20.7 MB). Peak memory consumption was 145.4 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:18,961 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:18,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.12 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:18,963 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.55 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:18,964 INFO L168 Benchmark]: Boogie Preprocessor took 81.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:18,965 INFO L168 Benchmark]: RCFGBuilder took 464.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:18,966 INFO L168 Benchmark]: TraceAbstraction took 10467.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 939.6 MB in the end (delta: 154.6 MB). Peak memory consumption was 154.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:18,970 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 239.12 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 33.55 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 464.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10467.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 939.6 MB in the end (delta: 154.6 MB). Peak memory consumption was 154.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...