./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 f470102c 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 0.1.25-f470102 [2019-11-28 16:57:43,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:57:43,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:57:43,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:57:43,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:57:43,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:57:43,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:57:43,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:57:43,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:57:43,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:57:43,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:57:43,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:57:43,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:57:43,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:57:43,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:57:43,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:57:43,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:57:43,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:57:43,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:57:43,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:57:43,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:57:43,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:57:43,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:57:43,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:57:43,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:57:43,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:57:43,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:57:43,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:57:43,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:57:43,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:57:43,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:57:43,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:57:43,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:57:43,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:57:43,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:57:43,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:57:43,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:57:43,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:57:43,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:57:43,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:57:43,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:57:43,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:57:43,714 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:57:43,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:57:43,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:57:43,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:57:43,717 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:57:43,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:57:43,717 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:57:43,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:57:43,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:57:43,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:57:43,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:57:43,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:57:43,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:57:43,720 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:57:43,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:57:43,720 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:57:43,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:57:43,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:57:43,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:57:43,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:57:43,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:57:43,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:43,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:57:43,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:57:43,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:57:43,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:57:43,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:57:43,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:57:43,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:57:43,724 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 [2019-11-28 16:57:44,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:57:44,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:57:44,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:57:44,053 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:57:44,055 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:57:44,055 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test29-2.c [2019-11-28 16:57:44,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3fdbc904/3ea43217e3884af1878474c98e51db2b/FLAGfa797e58a [2019-11-28 16:57:44,646 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:57:44,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test29-2.c [2019-11-28 16:57:44,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3fdbc904/3ea43217e3884af1878474c98e51db2b/FLAGfa797e58a [2019-11-28 16:57:44,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3fdbc904/3ea43217e3884af1878474c98e51db2b [2019-11-28 16:57:44,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:57:45,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:57:45,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:45,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:57:45,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:57:45,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:44" (1/1) ... [2019-11-28 16:57:45,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131603f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45, skipping insertion in model container [2019-11-28 16:57:45,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:44" (1/1) ... [2019-11-28 16:57:45,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:57:45,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:57:45,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:45,252 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:57:45,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:45,282 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:57:45,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45 WrapperNode [2019-11-28 16:57:45,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:45,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:45,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:57:45,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:57:45,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (1/1) ... [2019-11-28 16:57:45,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (1/1) ... [2019-11-28 16:57:45,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:45,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:57:45,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:57:45,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:57:45,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (1/1) ... [2019-11-28 16:57:45,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (1/1) ... [2019-11-28 16:57:45,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (1/1) ... [2019-11-28 16:57:45,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (1/1) ... [2019-11-28 16:57:45,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (1/1) ... [2019-11-28 16:57:45,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (1/1) ... [2019-11-28 16:57:45,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (1/1) ... [2019-11-28 16:57:45,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:57:45,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:57:45,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:57:45,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:57:45,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (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 16:57:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:57:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:57:45,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:57:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:57:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:57:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:57:45,668 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:57:45,669 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 16:57:45,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:45 BoogieIcfgContainer [2019-11-28 16:57:45,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:57:45,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:57:45,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:57:45,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:57:45,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:44" (1/3) ... [2019-11-28 16:57:45,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6c733c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:45, skipping insertion in model container [2019-11-28 16:57:45,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:45" (2/3) ... [2019-11-28 16:57:45,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6c733c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:45, skipping insertion in model container [2019-11-28 16:57:45,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:45" (3/3) ... [2019-11-28 16:57:45,699 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2019-11-28 16:57:45,723 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:57:45,734 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:57:45,761 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:57:45,784 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:57:45,784 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:57:45,784 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:57:45,784 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:57:45,784 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:57:45,785 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:57:45,785 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:57:45,785 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:57:45,800 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 16:57:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:57:45,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:45,808 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:45,808 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:45,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:45,815 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2019-11-28 16:57:45,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:45,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775434906] [2019-11-28 16:57:45,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:57:46,080 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 16:57:46,081 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775434906] [2019-11-28 16:57:46,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:57:46,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 16:57:46,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082596657] [2019-11-28 16:57:46,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 16:57:46,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:57:46,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 16:57:46,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 16:57:46,105 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 7 states. [2019-11-28 16:57:46,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:57:46,234 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2019-11-28 16:57:46,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:57:46,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-28 16:57:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:57:46,246 INFO L225 Difference]: With dead ends: 25 [2019-11-28 16:57:46,247 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 16:57:46,250 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 [2019-11-28 16:57:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 16:57:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 16:57:46,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 16:57:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-11-28 16:57:46,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2019-11-28 16:57:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:57:46,287 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-11-28 16:57:46,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 16:57:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-11-28 16:57:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:57:46,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:46,289 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:46,289 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:46,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:46,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1182785712, now seen corresponding path program 1 times [2019-11-28 16:57:46,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:46,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107265275] [2019-11-28 16:57:46,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:57:46,414 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 16:57:46,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107265275] [2019-11-28 16:57:46,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:57:46,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 16:57:46,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360643] [2019-11-28 16:57:46,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 16:57:46,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:57:46,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 16:57:46,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-28 16:57:46,420 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 7 states. [2019-11-28 16:57:46,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:57:46,474 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2019-11-28 16:57:46,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:57:46,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-28 16:57:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:57:46,475 INFO L225 Difference]: With dead ends: 10 [2019-11-28 16:57:46,475 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:57:46,478 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 [2019-11-28 16:57:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:57:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:57:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:57:46,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:57:46,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-28 16:57:46,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:57:46,480 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:57:46,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 16:57:46,480 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:57:46,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:57:46,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:57:46,498 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:57:46,498 INFO L246 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-28 16:57:46,498 INFO L246 CegarLoopResult]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-11-28 16:57:46,498 INFO L246 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-28 16:57:46,498 INFO L246 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2019-11-28 16:57:46,499 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:57:46,499 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:57:46,499 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:57:46,499 INFO L249 CegarLoopResult]: At program point L28(lines 11 29) the Hoare annotation is: true [2019-11-28 16:57:46,500 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2019-11-28 16:57:46,501 INFO L242 CegarLoopResult]: At program point L22(lines 12 29) the Hoare annotation is: false [2019-11-28 16:57:46,501 INFO L246 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-11-28 16:57:46,501 INFO L246 CegarLoopResult]: For program point L16-2(lines 16 20) no Hoare annotation was computed. [2019-11-28 16:57:46,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:57:46 BoogieIcfgContainer [2019-11-28 16:57:46,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:57:46,515 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:57:46,515 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:57:46,516 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:57:46,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:45" (3/4) ... [2019-11-28 16:57:46,525 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:57:46,541 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-28 16:57:46,542 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 16:57:46,542 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:57:46,645 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:57:46,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:57:46,649 INFO L168 Benchmark]: Toolchain (without parser) took 1646.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -103.0 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:46,650 INFO L168 Benchmark]: CDTParser took 0.89 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. [2019-11-28 16:57:46,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.91 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. [2019-11-28 16:57:46,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:46,658 INFO L168 Benchmark]: Boogie Preprocessor took 19.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:57:46,663 INFO L168 Benchmark]: RCFGBuilder took 274.17 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:46,664 INFO L168 Benchmark]: TraceAbstraction took 841.08 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:46,665 INFO L168 Benchmark]: Witness Printer took 131.27 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. [2019-11-28 16:57:46,671 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 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 280.91 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 93.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 274.17 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 841.08 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * Witness Printer took 131.27 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...