./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test29-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test29-2.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 5a0b8f7221e31cc2cda01831098deec15967e67b .......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 21:14:07,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:14:07,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:14:07,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:14:07,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:14:07,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:14:07,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:14:07,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:14:07,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:14:07,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:14:07,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:14:07,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:14:07,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:14:07,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:14:07,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:14:07,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:14:07,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:14:07,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:14:07,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:14:07,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:14:07,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:14:07,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:14:07,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:14:07,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:14:07,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:14:07,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:14:07,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:14:07,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:14:07,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:14:07,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:14:07,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:14:07,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:14:07,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:14:07,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:14:07,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:14:07,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:14:07,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:14:07,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:14:07,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:14:07,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:14:07,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:14:07,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 21:14:07,720 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:14:07,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:14:07,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:14:07,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:14:07,723 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:14:07,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:14:07,723 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:14:07,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:14:07,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:14:07,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:14:07,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:14:07,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:14:07,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:14:07,725 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:14:07,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:14:07,726 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:14:07,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:14:07,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:14:07,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:14:07,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:14:07,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:14:07,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:14:07,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:14:07,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:14:07,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:14:07,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 21:14:07,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:14:07,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:14:07,730 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 -> 5a0b8f7221e31cc2cda01831098deec15967e67b [2019-11-19 21:14:08,059 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:14:08,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:14:08,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:14:08,082 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:14:08,082 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:14:08,083 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test29-2.c [2019-11-19 21:14:08,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ec3158b/4b54b71a83ab4bcea6c3251226bd1c73/FLAG3dca10b4c [2019-11-19 21:14:08,642 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:14:08,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test29-2.c [2019-11-19 21:14:08,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ec3158b/4b54b71a83ab4bcea6c3251226bd1c73/FLAG3dca10b4c [2019-11-19 21:14:09,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ec3158b/4b54b71a83ab4bcea6c3251226bd1c73 [2019-11-19 21:14:09,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:14:09,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:14:09,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:14:09,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:14:09,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:14:09,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cead69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09, skipping insertion in model container [2019-11-19 21:14:09,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,064 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:14:09,082 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:14:09,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:14:09,281 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:14:09,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:14:09,307 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:14:09,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09 WrapperNode [2019-11-19 21:14:09,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:14:09,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:14:09,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:14:09,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:14:09,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:14:09,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:14:09,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:14:09,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:14:09,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (1/1) ... [2019-11-19 21:14:09,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:14:09,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:14:09,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:14:09,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:14:09,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:14:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 21:14:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:14:09,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:14:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 21:14:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 21:14:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 21:14:09,703 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:14:09,703 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 21:14:09,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:14:09 BoogieIcfgContainer [2019-11-19 21:14:09,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:14:09,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:14:09,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:14:09,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:14:09,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:14:09" (1/3) ... [2019-11-19 21:14:09,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2667ecfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:14:09, skipping insertion in model container [2019-11-19 21:14:09,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:14:09" (2/3) ... [2019-11-19 21:14:09,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2667ecfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:14:09, skipping insertion in model container [2019-11-19 21:14:09,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:14:09" (3/3) ... [2019-11-19 21:14:09,718 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2019-11-19 21:14:09,745 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:14:09,765 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 21:14:09,782 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 21:14:09,811 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:14:09,811 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:14:09,811 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:14:09,812 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:14:09,812 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:14:09,812 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:14:09,812 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:14:09,813 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:14:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-19 21:14:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 21:14:09,835 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:14:09,836 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:14:09,837 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:14:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:14:09,844 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2019-11-19 21:14:09,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:14:09,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061517762] [2019-11-19 21:14:09,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:14:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:14:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:14:10,091 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061517762] [2019-11-19 21:14:10,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:14:10,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-19 21:14:10,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808185957] [2019-11-19 21:14:10,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 21:14:10,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:14:10,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 21:14:10,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-19 21:14:10,117 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 7 states. [2019-11-19 21:14:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:14:10,234 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2019-11-19 21:14:10,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 21:14:10,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-19 21:14:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:14:10,246 INFO L225 Difference]: With dead ends: 25 [2019-11-19 21:14:10,246 INFO L226 Difference]: Without dead ends: 10 [2019-11-19 21:14:10,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-19 21:14:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-19 21:14:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-19 21:14:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-19 21:14:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-11-19 21:14:10,284 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2019-11-19 21:14:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:14:10,284 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-11-19 21:14:10,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 21:14:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-11-19 21:14:10,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 21:14:10,287 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:14:10,287 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:14:10,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:14:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:14:10,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1182785712, now seen corresponding path program 1 times [2019-11-19 21:14:10,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:14:10,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273878032] [2019-11-19 21:14:10,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:14:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:14:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:14:10,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273878032] [2019-11-19 21:14:10,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:14:10,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-19 21:14:10,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309507563] [2019-11-19 21:14:10,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 21:14:10,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:14:10,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 21:14:10,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-19 21:14:10,459 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 7 states. [2019-11-19 21:14:10,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:14:10,509 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2019-11-19 21:14:10,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 21:14:10,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-19 21:14:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:14:10,510 INFO L225 Difference]: With dead ends: 10 [2019-11-19 21:14:10,510 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 21:14:10,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-19 21:14:10,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 21:14:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 21:14:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 21:14:10,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 21:14:10,513 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-19 21:14:10,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:14:10,513 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 21:14:10,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 21:14:10,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 21:14:10,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 21:14:10,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 21:14:10,532 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 21:14:10,532 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-19 21:14:10,532 INFO L444 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-11-19 21:14:10,532 INFO L444 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-19 21:14:10,533 INFO L444 ceAbstractionStarter]: For program point L15-2(line 15) no Hoare annotation was computed. [2019-11-19 21:14:10,533 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-19 21:14:10,533 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 21:14:10,533 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 21:14:10,533 INFO L447 ceAbstractionStarter]: At program point L28(lines 11 29) the Hoare annotation is: true [2019-11-19 21:14:10,534 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2019-11-19 21:14:10,534 INFO L440 ceAbstractionStarter]: At program point L22(lines 12 29) the Hoare annotation is: false [2019-11-19 21:14:10,534 INFO L444 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-11-19 21:14:10,534 INFO L444 ceAbstractionStarter]: For program point L16-2(lines 16 20) no Hoare annotation was computed. [2019-11-19 21:14:10,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:14:10 BoogieIcfgContainer [2019-11-19 21:14:10,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:14:10,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:14:10,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:14:10,545 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:14:10,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:14:09" (3/4) ... [2019-11-19 21:14:10,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 21:14:10,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-19 21:14:10,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 21:14:10,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-19 21:14:10,652 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 21:14:10,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:14:10,655 INFO L168 Benchmark]: Toolchain (without parser) took 1610.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -103.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:10,656 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:14:10,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.29 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 940.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:10,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -193.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:10,658 INFO L168 Benchmark]: Boogie Preprocessor took 21.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:10,659 INFO L168 Benchmark]: RCFGBuilder took 281.59 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:10,659 INFO L168 Benchmark]: TraceAbstraction took 838.90 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:10,660 INFO L168 Benchmark]: Witness Printer took 107.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 21:14:10,664 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.29 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 940.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -193.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 281.59 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 838.90 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. * Witness Printer took 107.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 24 SDslu, 23 SDs, 0 SdLazy, 62 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...