./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/mannadiv.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/mannadiv.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce198381268ae62b0b3165f113c34ecdcd255d33 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:07:34,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:07:34,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:07:34,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:07:34,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:07:34,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:07:34,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:07:34,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:07:34,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:07:34,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:07:34,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:07:34,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:07:34,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:07:34,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:07:34,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:07:34,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:07:34,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:07:34,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:07:34,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:07:34,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:07:34,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:07:34,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:07:34,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:07:34,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:07:34,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:07:34,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:07:34,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:07:34,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:07:34,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:07:34,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:07:34,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:07:34,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:07:34,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:07:34,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:07:34,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:07:34,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:07:34,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:07:34,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:07:34,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:07:34,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:07:34,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:07:34,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:07:34,590 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:07:34,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:07:34,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:07:34,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:07:34,593 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:07:34,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:07:34,594 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:07:34,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:07:34,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:07:34,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:07:34,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:07:34,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:07:34,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:07:34,596 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:07:34,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:07:34,596 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:07:34,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:07:34,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:07:34,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:07:34,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:07:34,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:07:34,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:07:34,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:07:34,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:07:34,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:07:34,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:07:34,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:07:34,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:07:34,600 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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce198381268ae62b0b3165f113c34ecdcd255d33 [2019-11-28 00:07:34,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:07:34,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:07:34,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:07:34,939 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:07:34,939 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:07:34,940 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/mannadiv.c [2019-11-28 00:07:35,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dadf52a58/2cebded9e0f747f0849cc71bbfb0b366/FLAGda8f408a8 [2019-11-28 00:07:35,479 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:07:35,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/mannadiv.c [2019-11-28 00:07:35,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dadf52a58/2cebded9e0f747f0849cc71bbfb0b366/FLAGda8f408a8 [2019-11-28 00:07:35,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dadf52a58/2cebded9e0f747f0849cc71bbfb0b366 [2019-11-28 00:07:35,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:07:35,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:07:35,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:07:35,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:07:35,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:07:35,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:07:35" (1/1) ... [2019-11-28 00:07:35,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bce55a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:35, skipping insertion in model container [2019-11-28 00:07:35,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:07:35" (1/1) ... [2019-11-28 00:07:35,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:07:35,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:07:36,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:07:36,160 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:07:36,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:07:36,189 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:07:36,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36 WrapperNode [2019-11-28 00:07:36,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:07:36,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:07:36,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:07:36,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:07:36,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (1/1) ... [2019-11-28 00:07:36,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (1/1) ... [2019-11-28 00:07:36,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:07:36,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:07:36,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:07:36,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:07:36,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (1/1) ... [2019-11-28 00:07:36,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (1/1) ... [2019-11-28 00:07:36,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (1/1) ... [2019-11-28 00:07:36,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (1/1) ... [2019-11-28 00:07:36,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (1/1) ... [2019-11-28 00:07:36,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (1/1) ... [2019-11-28 00:07:36,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (1/1) ... [2019-11-28 00:07:36,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:07:36,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:07:36,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:07:36,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:07:36,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:07:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:07:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:07:36,552 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:07:36,553 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 00:07:36,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:36 BoogieIcfgContainer [2019-11-28 00:07:36,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:07:36,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:07:36,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:07:36,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:07:36,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:07:35" (1/3) ... [2019-11-28 00:07:36,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3235ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:07:36, skipping insertion in model container [2019-11-28 00:07:36,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:36" (2/3) ... [2019-11-28 00:07:36,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3235ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:07:36, skipping insertion in model container [2019-11-28 00:07:36,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:36" (3/3) ... [2019-11-28 00:07:36,570 INFO L109 eAbstractionObserver]: Analyzing ICFG mannadiv.c [2019-11-28 00:07:36,600 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:07:36,614 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 00:07:36,641 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 00:07:36,666 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:07:36,666 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:07:36,666 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:07:36,666 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:07:36,666 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:07:36,666 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:07:36,667 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:07:36,667 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:07:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 00:07:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 00:07:36,685 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:36,686 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 00:07:36,686 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:36,691 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-28 00:07:36,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:36,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143482634] [2019-11-28 00:07:36,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:36,780 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:36,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637615285] [2019-11-28 00:07:36,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:36,816 WARN L253 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 00:07:36,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:36,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143482634] [2019-11-28 00:07:36,905 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:36,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637615285] [2019-11-28 00:07:36,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:07:36,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 00:07:36,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815237576] [2019-11-28 00:07:36,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:07:36,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:36,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:07:36,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:07:36,923 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-28 00:07:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:37,030 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2019-11-28 00:07:37,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:07:37,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 00:07:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:37,042 INFO L225 Difference]: With dead ends: 42 [2019-11-28 00:07:37,042 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 00:07:37,045 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:07:37,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 00:07:37,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2019-11-28 00:07:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 00:07:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-28 00:07:37,088 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2019-11-28 00:07:37,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:37,090 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-28 00:07:37,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:07:37,090 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-28 00:07:37,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 00:07:37,091 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:37,091 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:07:37,295 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:37,296 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:37,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1361018346, now seen corresponding path program 1 times [2019-11-28 00:07:37,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:37,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502449180] [2019-11-28 00:07:37,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:37,307 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:37,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691756180] [2019-11-28 00:07:37,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:37,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 00:07:37,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:37,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:37,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502449180] [2019-11-28 00:07:37,409 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:37,410 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691756180] [2019-11-28 00:07:37,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:07:37,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 00:07:37,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683502027] [2019-11-28 00:07:37,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 00:07:37,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:37,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 00:07:37,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:07:37,413 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2019-11-28 00:07:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:37,524 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-11-28 00:07:37,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:07:37,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 00:07:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:37,530 INFO L225 Difference]: With dead ends: 19 [2019-11-28 00:07:37,530 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 00:07:37,532 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:07:37,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 00:07:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-28 00:07:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 00:07:37,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-28 00:07:37,544 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2019-11-28 00:07:37,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:37,546 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-28 00:07:37,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 00:07:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-28 00:07:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 00:07:37,549 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:37,550 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 00:07:37,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:37,764 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:37,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:37,764 INFO L82 PathProgramCache]: Analyzing trace with hash 759715009, now seen corresponding path program 1 times [2019-11-28 00:07:37,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:37,764 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632350556] [2019-11-28 00:07:37,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:37,772 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:37,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144080449] [2019-11-28 00:07:37,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 00:07:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:37,821 WARN L253 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-28 00:07:37,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:37,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632350556] [2019-11-28 00:07:37,872 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:37,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144080449] [2019-11-28 00:07:37,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:37,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-28 00:07:37,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505040883] [2019-11-28 00:07:37,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 00:07:37,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:37,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 00:07:37,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:07:37,875 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-11-28 00:07:38,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:38,003 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-28 00:07:38,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:07:38,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-28 00:07:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:38,004 INFO L225 Difference]: With dead ends: 34 [2019-11-28 00:07:38,005 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 00:07:38,005 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:07:38,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 00:07:38,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2019-11-28 00:07:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 00:07:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-28 00:07:38,011 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 8 [2019-11-28 00:07:38,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:38,012 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-28 00:07:38,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 00:07:38,012 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-28 00:07:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 00:07:38,013 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:38,013 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 00:07:38,224 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:38,225 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:38,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:38,226 INFO L82 PathProgramCache]: Analyzing trace with hash 759774591, now seen corresponding path program 1 times [2019-11-28 00:07:38,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:38,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510846628] [2019-11-28 00:07:38,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:38,237 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:38,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158269805] [2019-11-28 00:07:38,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:38,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 00:07:38,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:38,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510846628] [2019-11-28 00:07:38,307 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:38,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158269805] [2019-11-28 00:07:38,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:38,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-28 00:07:38,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449571341] [2019-11-28 00:07:38,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 00:07:38,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:38,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 00:07:38,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:07:38,309 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-11-28 00:07:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:38,423 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-11-28 00:07:38,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:07:38,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-28 00:07:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:38,425 INFO L225 Difference]: With dead ends: 30 [2019-11-28 00:07:38,425 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 00:07:38,426 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:07:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 00:07:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2019-11-28 00:07:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-28 00:07:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-28 00:07:38,432 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 8 [2019-11-28 00:07:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:38,433 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-28 00:07:38,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 00:07:38,433 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-11-28 00:07:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 00:07:38,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:38,434 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:07:38,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:38,636 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:38,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:38,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1802926015, now seen corresponding path program 1 times [2019-11-28 00:07:38,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:38,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963143673] [2019-11-28 00:07:38,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:38,643 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:38,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497623928] [2019-11-28 00:07:38,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 00:07:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:38,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 00:07:38,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:38,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 00:07:38,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963143673] [2019-11-28 00:07:38,767 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:38,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497623928] [2019-11-28 00:07:38,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:07:38,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 00:07:38,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699809866] [2019-11-28 00:07:38,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 00:07:38,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:38,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 00:07:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:07:38,770 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 7 states. [2019-11-28 00:07:38,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:38,893 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-28 00:07:38,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:07:38,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-28 00:07:38,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:38,894 INFO L225 Difference]: With dead ends: 21 [2019-11-28 00:07:38,894 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:07:38,895 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:07:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:07:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:07:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:07:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:07:38,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-28 00:07:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:38,896 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:07:38,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 00:07:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:07:38,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:07:39,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:39,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:07:39,199 INFO L242 CegarLoopResult]: At program point L35-2(lines 30 43) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~x1~0))) (or (and .cse0 (= ULTIMATE.start_main_~y2~0 0) (= ULTIMATE.start_main_~y1~0 0) (= ULTIMATE.start_main_~x1~0 ULTIMATE.start_main_~y3~0)) (and (= ULTIMATE.start_main_~x1~0 (+ ULTIMATE.start_main_~y2~0 ULTIMATE.start_main_~y3~0 (* ULTIMATE.start_main_~y1~0 ULTIMATE.start_main_~x2~0))) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)))) [2019-11-28 00:07:39,199 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:07:39,199 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-11-28 00:07:39,199 INFO L246 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2019-11-28 00:07:39,200 INFO L242 CegarLoopResult]: At program point L11-2(line 33) the Hoare annotation is: (and (= ULTIMATE.start_main_~x1~0 (+ ULTIMATE.start_main_~y2~0 ULTIMATE.start_main_~y3~0 (* ULTIMATE.start_main_~y1~0 ULTIMATE.start_main_~x2~0))) (<= 0 ULTIMATE.start_main_~x1~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-28 00:07:39,200 INFO L246 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2019-11-28 00:07:39,200 INFO L249 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: true [2019-11-28 00:07:39,200 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:07:39,200 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:07:39,200 INFO L246 CegarLoopResult]: For program point L30-2(lines 30 43) no Hoare annotation was computed. [2019-11-28 00:07:39,201 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-11-28 00:07:39,201 INFO L249 CegarLoopResult]: At program point L45(lines 17 46) the Hoare annotation is: true [2019-11-28 00:07:39,201 INFO L246 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2019-11-28 00:07:39,201 INFO L246 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2019-11-28 00:07:39,201 INFO L246 CegarLoopResult]: For program point L35(lines 35 42) no Hoare annotation was computed. [2019-11-28 00:07:39,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:07:39 BoogieIcfgContainer [2019-11-28 00:07:39,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:07:39,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:07:39,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:07:39,224 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:07:39,225 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:36" (3/4) ... [2019-11-28 00:07:39,229 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:07:39,242 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 00:07:39,242 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:07:39,297 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:07:39,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:07:39,300 INFO L168 Benchmark]: Toolchain (without parser) took 3403.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 961.7 MB in the beginning and 926.8 MB in the end (delta: 34.9 MB). Peak memory consumption was 142.3 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:39,301 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:07:39,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.68 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:39,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -151.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:39,303 INFO L168 Benchmark]: Boogie Preprocessor took 19.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:07:39,304 INFO L168 Benchmark]: RCFGBuilder took 258.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:39,305 INFO L168 Benchmark]: TraceAbstraction took 2664.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 933.6 MB in the end (delta: 149.6 MB). Peak memory consumption was 149.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:39,305 INFO L168 Benchmark]: Witness Printer took 73.96 ms. Allocated memory is still 1.1 GB. Free memory was 933.6 MB in the beginning and 926.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:07:39,309 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 293.68 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 85.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -151.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 258.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2664.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 933.6 MB in the end (delta: 149.6 MB). Peak memory consumption was 149.6 MB. Max. memory is 11.5 GB. * Witness Printer took 73.96 ms. Allocated memory is still 1.1 GB. Free memory was 933.6 MB in the beginning and 926.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((0 <= x1 && y2 == 0) && y1 == 0) && x1 == y3) || ((x1 == y2 + y3 + y1 * x2 && 0 <= x1) && 1 == cond) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (x1 == y2 + y3 + y1 * x2 && 0 <= x1) && 1 == cond - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 47 SDslu, 68 SDs, 0 SdLazy, 137 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 15 NumberOfFragments, 46 HoareAnnotationTreeSize, 4 FomulaSimplifications, 112 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 2122 SizeOfPredicates, 37 NumberOfNonLiveVariables, 178 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...